KR100981818B1 - Ofdm 통신을 위한 프레임 구조, 시스템 및 방법 - Google Patents
Ofdm 통신을 위한 프레임 구조, 시스템 및 방법 Download PDFInfo
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Abstract
Description
Claims (9)
- 신호 발생기, 복수의 안테나, 및 프로세서를 포함하는 송신기로서,상기 프로세서는 정보 데이터를 패킷 데이터 프레임 구조로 어셈블(assemble)하도록 구성되고, 상기 송신기는 상기 복수의 안테나를 통해 상기 패킷 데이터 프레임 구조를 송신하도록 구성되고, 상기 패킷 데이터 프레임 구조는 네트워크의 동기화 주기에 대응하는 길이를 갖는 수퍼프레임을 포함하며,상기 수퍼프레임은 복수의 무선 프레임을 포함하고, 각각의 무선 프레임은 적응성 부호화 및 변조 주기에 대응하는 복수의 TPS(transmission parameter signalling) 프레임을 포함하고, 각각의 TPS 프레임은 무선 인터페이스 슬롯 사이즈에 대응하는 복수의 슬롯을 포함하고, 각각의 슬롯은 복수의 OFDM 심볼을 포함하며,상기 송신기는,OFDM 심볼들이 N개의 시간 영역 샘플들로부터 구성되는 제1 모드의 동작; 및OFDM 심볼들이 N/2개의 시간 영역 샘플들로부터 구성되는 제2 모드의 동작을 이용하여 송신하도록 구성되고,상기 신호 발생기는 상기 제1 모드의 동작을 위해 구성된 제1 FFT 엘리먼트, 및 상기 제2 모드의 동작을 위해 구성된 제2 FFT 엘리먼트를 포함하는 송신기.
- 제1항에 있어서,프레임 사이즈 제약에 따라 상기 제1 모드와 제2 모드 간의 스위칭을 수행하도록 구성되는 송신기.
- 제1항에 있어서,각각의 제1 모드 OFDM 심볼에 대하여 M개의 샘플 프리픽스(prefix)를 송신하도록 구성되고, 각각의 제2 모드 OFDM 심볼에 대하여 M/2개의 샘플 프리픽스를 송신하도록 구성되는 송신기.
- 제3항에 있어서,N=1024 이고 M=32인 송신기.
- 제1항에 있어서,상기 제2 모드의 OFDM 심볼들이 상기 제1 모드의 동작에서의 OFDM 심볼들의 2배 길이가 되도록, 상기 제1 모드의 동작의 샘플링 레이트가 상기 제2 모드의 동작의 샘플링 레이트와 동일한 송신기.
- 신호 발생기, 복수의 안테나, 및 프로세서를 포함하는 송신기로서,상기 프로세서는 정보 데이터를 패킷 데이터 프레임 구조로 어셈블하도록 구성되고, 상기 송신기는 상기 복수의 안테나를 통해 상기 패킷 데이터 프레임 구조를 송신하도록 구성되고, 상기 패킷 데이터 프레임 구조는 네트워크의 동기화 주기에 대응하는 길이를 갖는 수퍼프레임을 포함하며,상기 수퍼프레임은 복수의 무선 프레임을 포함하고, 각각의 무선 프레임은 적응성 부호화 및 변조 주기에 대응하는 복수의 TPS 프레임을 포함하고, 각각의 TPS 프레임은 무선 인터페이스 슬롯 사이즈에 대응하는 복수의 슬롯을 포함하고, 각각의 슬롯은 복수의 OFDM 심볼을 포함하며,상기 송신기는,OFDM 심볼들이 제1 FFT 사이즈를 이용하여 구성되는 제1 모드의 동작; 및OFDM 심볼들이 제2 FFT 사이즈를 이용하여 구성되는 제2 모드의 동작을 이용하여 송신하도록 구성되고,상기 신호 발생기는 상기 제1 모드의 동작을 위해 구성된 제1 FFT 엘리먼트, 및 상기 제2 모드의 동작을 위해 구성된 제2 FFT 엘리먼트를 포함하는 송신기.
- 제6항에 있어서,슬롯당 증가된 갯수의 OFDM 심볼들은, 제1 FFT 사이즈보다 작은 제2 FFT 사이즈를 설정함으로써 제2 OFDM 모드에 대해 OFDM 심볼 구간을 단축시키지만, 샘플링 주파수는 변경시키지 않음으로써 실현되는 송신기.
- 제6항에 있어서,각각의 심볼 앞에 프리픽스를 삽입하는 프리픽스 삽입기를 더 포함하고,제1 모드의 동작에 대한 프리픽스들은 제1 갯수의 샘플들을 갖고, 제2 모드의 동작에 대한 프리픽스들은 제2 갯수의 샘플들을 가지며, 제1 FFT 사이즈에 대한 제1 갯수의 샘플들의 비는 제2 FFT 사이즈에 대한 제2 갯수의 샘플들의 비와 동일한 송신기.
- 송신기로서,신호 발생기, 복수의 안테나, 및 프로세서;제1 FFT 사이즈를 가지고, 제1 구간을 갖는 제1 OFDM 심볼들을 생성하는 제1 FFT 엘리먼트 - 각각의 제1 OFDM 심볼은 개별적인 제1 주기적(cyclic) 프리픽스를 가짐 -; 및상기 제1 FFT 사이즈보다 작은 제2 FFT 사이즈를 가지고, 상기 제1 구간보다 짧은 제2 구간을 갖는 제2 OFDM 심볼들을 생성하는 제2 FFT 엘리먼트 - 각각의 제2 OFDM 심볼은 개별적인 제2 주기적 프리픽스를 가지며, 각각의 제2 주기적 프리픽스의 구간은 각각의 제1 주기적 프리픽스의 구간보다 짧음 -를 포함하며,상기 송신기는, 고정된 구간을 갖는 일련의 슬롯들 - 상기 슬롯들은 제1 OFDM 심볼들과 제2 OFDM 심볼들을 포함함 - 을 송신하도록 구성되고,상기 프로세서는 정보 데이터를 패킷 데이터 프레임 구조로 어셈블하도록 구성되고, 상기 송신기는 상기 복수의 안테나를 통해 상기 패킷 데이터 프레임 구조를 송신하도록 구성되고, 상기 패킷 데이터 프레임 구조는 네트워크의 동기화 주기에 대응하는 길이를 갖는 수퍼프레임을 포함하며,상기 수퍼프레임은 복수의 무선 프레임을 포함하고, 각각의 무선 프레임은 적응성 부호화 및 변조 주기에 대응하는 복수의 TPS 프레임을 포함하고, 각각의 TPS 프레임은 무선 인터페이스 슬롯 사이즈에 대응하는 복수의 슬롯을 포함하고, 각각의 슬롯은 복수의 OFDM 심볼을 포함하는 송신기.
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KR1020047005738A KR100934299B1 (ko) | 2001-10-17 | 2002-10-15 | 멀티 캐리어 cdma 시스템에서의 동기화 |
KR1020107024290A KR101129968B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
KR1020097001822A KR100959956B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 통신을 위한 셀 선택을 수행하는 방법 및 시스템 |
KR1020107012105A KR101033129B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
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KR1020107003705A KR101225428B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
KR1020097001821A KR20090015188A (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
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KR1020047005738A KR100934299B1 (ko) | 2001-10-17 | 2002-10-15 | 멀티 캐리어 cdma 시스템에서의 동기화 |
KR1020107024290A KR101129968B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
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KR1020137015149A KR101361540B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
KR1020107003705A KR101225428B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
KR1020097001821A KR20090015188A (ko) | 2001-10-17 | 2002-10-15 | Ofdm 시스템에서의 동기화 수행을 위한 방법 및 시스템 |
KR1020107003126A KR101033128B1 (ko) | 2001-10-17 | 2002-10-15 | Ofdm 통신을 위한 셀 선택을 수행하는 방법 및 시스템 |
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Country Status (8)
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Families Citing this family (362)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7020074B1 (en) * | 2000-04-03 | 2006-03-28 | Nortel Networks Limited | Synchronization method and apparatus for frequency division multiplexed telecommunication systems |
US7146636B2 (en) * | 2000-07-24 | 2006-12-05 | Bluesocket, Inc. | Method and system for enabling centralized control of wireless local area networks |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US7123662B2 (en) * | 2001-08-15 | 2006-10-17 | Mediatek Inc. | OFDM detection apparatus and method for networking devices |
US7548506B2 (en) * | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
JP2009284494A (ja) * | 2001-11-13 | 2009-12-03 | Panasonic Corp | 送信方法、送信装置および受信装置 |
JP4606407B2 (ja) * | 2001-11-13 | 2011-01-05 | パナソニック株式会社 | 送信方法及び送信装置 |
JP3997890B2 (ja) | 2001-11-13 | 2007-10-24 | 松下電器産業株式会社 | 送信方法及び送信装置 |
US7042858B1 (en) * | 2002-03-22 | 2006-05-09 | Jianglei Ma | Soft handoff for OFDM |
AU2003903826A0 (en) * | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
US7327800B2 (en) * | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
KR100548312B1 (ko) * | 2002-06-20 | 2006-02-02 | 엘지전자 주식회사 | 다중 입출력 이동 통신 시스템에서의 신호 처리 방법 |
US7095709B2 (en) * | 2002-06-24 | 2006-08-22 | Qualcomm, Incorporated | Diversity transmission modes for MIMO OFDM communication systems |
US7167507B2 (en) * | 2002-07-01 | 2007-01-23 | Lucent Technologies Inc. | Equalizer and method for performing equalization in a wireless communications system |
JP2005535223A (ja) * | 2002-07-31 | 2005-11-17 | トムソン ライセンシング | 直交周波数分割多重(ofdm)レシーバのための集中バッファアーキテクチャ |
US7366200B2 (en) * | 2002-08-26 | 2008-04-29 | Qualcomm Incorporated | Beacon signaling in a wireless system |
US7388845B2 (en) * | 2002-08-26 | 2008-06-17 | Qualcomm Incorporated | Multiple access wireless communications system using a multisector configuration |
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
EP1542384A4 (en) * | 2002-08-28 | 2007-06-20 | Fujitsu Ltd | TRANSMITTING / RECEIVING APPARATUS AND TRANSMITTING / RECEIVING METHOD |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US7324429B2 (en) | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
JP4009641B2 (ja) * | 2002-11-20 | 2007-11-21 | 株式会社エヌ・ティ・ティ・ドコモ | 通信システム、通信方法、送信装置、受信装置及び制御プログラム |
WO2004051901A1 (en) * | 2002-11-30 | 2004-06-17 | Samsung Electronics Co., Ltd. | Apparatus and method for generating a preamble sequence in an ofdm communication system |
CN1512794A (zh) * | 2002-12-30 | 2004-07-14 | �ʼҷ����ֵ��ӹɷ�����˾ | 一种tdd-cdma***中用于移动终端的小区搜索方法及装置 |
ES2212744B2 (es) | 2003-01-10 | 2005-03-16 | Diseño De Sistemas En Silicio, S.A. | Procedimiento de sincronizacion en el dominio del tiempo y de la frecuencia de multiples equipos en un sistema de transmision con modulacion ofdm. |
WO2004075451A1 (ja) * | 2003-01-29 | 2004-09-02 | Mitsubishi Denki Kabushiki Kaisha | マルチキャリア無線通信システム、送信装置および受信装置 |
WO2004082181A1 (ja) | 2003-03-10 | 2004-09-23 | Matsushita Electric Industrial Co., Ltd. | Ofdm信号の送信方法、送信装置及び受信装置 |
US7327795B2 (en) * | 2003-03-31 | 2008-02-05 | Vecima Networks Inc. | System and method for wireless communication systems |
US8743837B2 (en) * | 2003-04-10 | 2014-06-03 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices |
US7916803B2 (en) * | 2003-04-10 | 2011-03-29 | Qualcomm Incorporated | Modified preamble structure for IEEE 802.11a extensions to allow for coexistence and interoperability between 802.11a devices and higher data rate, MIMO or otherwise extended devices |
FI115683B (fi) * | 2003-04-10 | 2005-06-15 | Elektrobit Oy | Synkronisointimenetelmä ja tiedonsiirtojärjestelmä |
US7133479B2 (en) * | 2003-04-15 | 2006-11-07 | Silicon Integrated Systems Corp. | Frequency synchronization apparatus and method for OFDM systems |
US7606316B1 (en) | 2003-05-14 | 2009-10-20 | Marvell International Ltd. | MIMO-OFDM preamble for channel estimation |
KR100555722B1 (ko) * | 2003-05-20 | 2006-03-03 | 삼성전자주식회사 | 다중 반송파 수신 시스템의 정수배 주파수 옵셋 추정 장치및 그의 정수배 주파수 옵셋 추정방법 |
US8064528B2 (en) | 2003-05-21 | 2011-11-22 | Regents Of The University Of Minnesota | Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems |
IL156540A0 (en) * | 2003-06-19 | 2004-01-04 | Zion Hada | Ofdma communication system and method |
US20060121921A1 (en) * | 2003-06-27 | 2006-06-08 | Mitsubishi Denki Kabushiki Kaisha | Transmitter apparatus, receiver apparatus and radio communication apparatus |
EP1645096A1 (en) * | 2003-06-30 | 2006-04-12 | Agere Systems Inc. | Methods and apparatus for backwards compatible communication in a multiple antenna communication system using fdm-based preamble structures |
US9325532B2 (en) | 2003-06-30 | 2016-04-26 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Method and apparatus for communicating symbols in a multiple input multiple output communication system using interleaved subcarriers across a plurality of antennas |
JP4685772B2 (ja) * | 2003-06-30 | 2011-05-18 | アギア システムズ インコーポレーテッド | 複数のアンテナにわたるインタリーブされた副搬送波を使用して多入力多出力通信システム内で符号を通信する方法および装置 |
WO2005006700A1 (en) * | 2003-06-30 | 2005-01-20 | Agere Systems Inc. | Methods and apparatus for backwards compatible communication in a multiple antenna communication system using time orthogonal symbols |
DE10331313B3 (de) * | 2003-07-10 | 2005-01-05 | Siemens Ag | Verfahren zur Synchronisation eines in Funkzellen aufgeteilten Funkkommunikationssystems |
US20050063298A1 (en) * | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
JP4829953B2 (ja) * | 2003-09-26 | 2011-12-07 | 日本放送協会 | Ofdm伝送方式におけるキャリアの配置方法 |
US7075906B2 (en) * | 2003-09-30 | 2006-07-11 | Cisco Technology, Inc. | Method and apparatus for cell identification in wireless data networks |
US8472473B2 (en) | 2003-10-15 | 2013-06-25 | Qualcomm Incorporated | Wireless LAN protocol stack |
US8462817B2 (en) | 2003-10-15 | 2013-06-11 | Qualcomm Incorporated | Method, apparatus, and system for multiplexing protocol data units |
US8483105B2 (en) | 2003-10-15 | 2013-07-09 | Qualcomm Incorporated | High speed media access control |
US9226308B2 (en) | 2003-10-15 | 2015-12-29 | Qualcomm Incorporated | Method, apparatus, and system for medium access control |
US8284752B2 (en) | 2003-10-15 | 2012-10-09 | Qualcomm Incorporated | Method, apparatus, and system for medium access control |
US8233462B2 (en) * | 2003-10-15 | 2012-07-31 | Qualcomm Incorporated | High speed media access control and direct link protocol |
KR100969780B1 (ko) * | 2003-10-31 | 2010-07-13 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식 통신 시스템에서 파일럿 신호 송수신 장치 및 방법 |
US7616698B2 (en) * | 2003-11-04 | 2009-11-10 | Atheros Communications, Inc. | Multiple-input multiple output system and method |
US7599348B2 (en) * | 2003-11-04 | 2009-10-06 | Lg Electronics Inc. | Digital E8-VSB reception system and E8-VSB data demultiplexing method |
US7164740B2 (en) * | 2003-11-21 | 2007-01-16 | Interdigital Technology Corporation | Wireless communication apparatus using fast fourier transforms to create, optimize and incorporate a beam space antenna array in an orthogonal frequency division multiplexing receiver |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US8983467B2 (en) * | 2003-12-09 | 2015-03-17 | Lsi Corporation | Method and apparatus for access point selection using channel correlation in a wireless communication system |
KR100856227B1 (ko) | 2003-12-15 | 2008-09-03 | 삼성전자주식회사 | 이동통신시스템에서의 송/수신장치 및 방법 |
CN101594671B (zh) * | 2003-12-26 | 2011-12-14 | 株式会社东芝 | 无线发送和接收设备及方法 |
JP4212548B2 (ja) | 2003-12-26 | 2009-01-21 | 株式会社東芝 | 無線送信装置、無線受信装置、無線送信方法及び無線受信方法 |
US7649833B2 (en) | 2003-12-29 | 2010-01-19 | Intel Corporation | Multichannel orthogonal frequency division multiplexed receivers with antenna selection and maximum-ratio combining and associated methods |
US7450489B2 (en) * | 2003-12-30 | 2008-11-11 | Intel Corporation | Multiple-antenna communication systems and methods for communicating in wireless local area networks that include single-antenna communication devices |
US8369790B2 (en) * | 2003-12-30 | 2013-02-05 | Intel Corporation | Communication overhead reduction apparatus, systems, and methods |
ES2348415T3 (es) * | 2004-01-20 | 2010-12-03 | Qualcomm, Incorporated | Comunicacion de difusion/multidifusion sincronizada. |
US8194771B2 (en) * | 2004-01-27 | 2012-06-05 | Agere Systems Inc. | Transmission method and apparatus in a multiple antenna communication system |
US8433005B2 (en) | 2004-01-28 | 2013-04-30 | Qualcomm Incorporated | Frame synchronization and initial symbol timing acquisition system and method |
US8724447B2 (en) | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
WO2005074305A1 (en) * | 2004-01-29 | 2005-08-11 | Neocific, Inc. | Methods and apparatus for multi-carrier, multi-cell wireless communication networks |
CN102064848B (zh) | 2004-01-29 | 2012-07-25 | 桥扬科技有限公司 | 用于多小区宽带无线***中的移动站和基站的方法和装置 |
US8903440B2 (en) | 2004-01-29 | 2014-12-02 | Qualcomm Incorporated | Distributed hierarchical scheduling in an ad hoc network |
US20050169261A1 (en) * | 2004-02-03 | 2005-08-04 | Texas Instruments Incorporated | Method of signaling the length of OFDM WLAN packets |
US7233773B2 (en) * | 2004-02-13 | 2007-06-19 | Broadcom Corporation | Configuring a MIMO communication |
US7304977B2 (en) * | 2004-02-17 | 2007-12-04 | Texas Instruments Incorporated | Implementation for a 5 sample guard interval for multi-band OFDM |
US7701909B2 (en) * | 2004-02-17 | 2010-04-20 | Alcatel-Lucent Usa Inc. | Methods and devices for selecting sets of available sub-channels |
CN100385824C (zh) * | 2004-02-20 | 2008-04-30 | 电子科技大学 | 一种mimo-ofdm***的自适应信道估计方法 |
CN1898890B (zh) * | 2004-03-11 | 2011-06-15 | 松下电器产业株式会社 | 数据发送方法和数据接收方法 |
US7742533B2 (en) | 2004-03-12 | 2010-06-22 | Kabushiki Kaisha Toshiba | OFDM signal transmission method and apparatus |
KR100606040B1 (ko) * | 2004-03-12 | 2006-07-28 | 삼성전자주식회사 | 다중 안테나를 사용하는 광대역 무선 통신 시스템의 프리앰블 생성 방법 및 장치 |
CN106160830B (zh) * | 2004-03-15 | 2020-02-14 | 苹果公司 | 用于具有四根发射天线的ofdm***的导频设计 |
US8315271B2 (en) | 2004-03-26 | 2012-11-20 | Qualcomm Incorporated | Method and apparatus for an ad-hoc wireless communications system |
US7983142B2 (en) | 2004-03-30 | 2011-07-19 | Intel Corporation | Apparatus, systems, and methods for the reception and synchronization of asynchronous signals |
CA2562549C (en) * | 2004-04-12 | 2013-03-19 | The Directv Group, Inc. | Methods and apparatuses for minimizing co-channel interference |
US7672285B2 (en) * | 2004-06-28 | 2010-03-02 | Dtvg Licensing, Inc. | Method and apparatus for minimizing co-channel interference by scrambling |
US7161988B2 (en) * | 2004-04-12 | 2007-01-09 | The Directv Group, Inc. | Method and apparatus for minimizing co-channel interference |
CN100353698C (zh) * | 2004-04-14 | 2007-12-05 | 美国博通公司 | 一种用于配置mimo通信的方法及射频传送器 |
US7257151B2 (en) * | 2004-05-05 | 2007-08-14 | Texas Instruments Incorporated | (Updated) preamble for FDMA |
CN1951032B (zh) * | 2004-05-04 | 2012-05-30 | 索尼公司 | 用于生成在mimo时隙中传输的信号的方法和设备 |
US7564814B2 (en) | 2004-05-07 | 2009-07-21 | Qualcomm, Incorporated | Transmission mode and rate selection for a wireless communication system |
US20050265219A1 (en) * | 2004-05-11 | 2005-12-01 | Texas Instruments Incorporated | Orthogonal frequency division multiplex (OFDM) packet detect unit, method of detecting an OFDM packet and OFDM receiver employing the same |
JP2005328312A (ja) * | 2004-05-13 | 2005-11-24 | Ntt Docomo Inc | チャネル推定装置、チャネル推定方法及び無線受信機 |
US7356322B2 (en) * | 2004-05-17 | 2008-04-08 | Agere Systems Inc. | Multiple-branch wireless receiver |
WO2005119922A2 (en) * | 2004-05-27 | 2005-12-15 | Airgo Networks, Inc. | Modified ieee 802.11a for interoperability between 802.11a devices |
US8401018B2 (en) | 2004-06-02 | 2013-03-19 | Qualcomm Incorporated | Method and apparatus for scheduling in a wireless network |
US7920884B2 (en) * | 2004-06-04 | 2011-04-05 | Qualcomm Incorporated | Frame structures for a wireless communication system with multiple radio technologies |
US20070280173A1 (en) * | 2004-06-14 | 2007-12-06 | Samsung Electronics Co., Ltd. | Method for Configuring Signals Corresponding to Adaptive Packet Format of Mimo-Wlan System |
JP2006014321A (ja) * | 2004-06-21 | 2006-01-12 | Samsung Electronics Co Ltd | 広帯域無線接続通信システムにおける動作モード情報を送受信する方法 |
US8116262B2 (en) | 2004-06-22 | 2012-02-14 | Rockstar Bidco Lp | Methods and systems for enabling feedback in wireless communication networks |
EP2993851B1 (en) * | 2004-06-24 | 2019-04-24 | Apple Inc. | Preambles in ofdma system |
WO2006000094A1 (en) | 2004-06-24 | 2006-01-05 | Nortel Networks Limited | Efficient location updates, paging and short bursts |
KR100739511B1 (ko) * | 2004-06-25 | 2007-07-13 | 삼성전자주식회사 | 직교 주파수 분할 다중 방식을 사용하는 통신 시스템에서파일럿 신호 송수신 장치 및 방법 |
US7583586B2 (en) * | 2004-07-02 | 2009-09-01 | Samsung Electronics Co., Ltd | Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme |
WO2006002550A1 (en) | 2004-07-07 | 2006-01-12 | Nortel Networks Limited | System and method for mapping symbols for mimo transmission |
JP4597193B2 (ja) * | 2004-07-07 | 2010-12-15 | サムスン エレクトロニクス カンパニー リミテッド | 複数の送信アンテナを使用する広帯域無線接続通信システムにおけるパイロット信号を送信する装置及び方法 |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US8891349B2 (en) * | 2004-07-23 | 2014-11-18 | Qualcomm Incorporated | Method of optimizing portions of a frame |
DE102004038834B4 (de) * | 2004-08-10 | 2006-11-02 | Siemens Ag | Verfahren zum Erzeugen von Präambel- und Signalisierungsstrukturen in einem MIMO-OFDM-Übertragungssystem |
CA2576933C (en) * | 2004-08-16 | 2012-04-24 | Zte San Diego, Inc. | Fast cell search and accurate synchronization in wireless communications |
US7366250B2 (en) | 2004-09-09 | 2008-04-29 | Agere Systems Inc. | Method and apparatus for improved efficiency in an extended multiple antenna communication system |
JP3754441B1 (ja) * | 2004-09-10 | 2006-03-15 | 三洋電機株式会社 | 受信方法ならびに装置およびそれを利用した通信システム |
KR100742128B1 (ko) * | 2004-10-15 | 2007-07-24 | 삼성전자주식회사 | 직교주파수분할다중 방식의 통신시스템에서 상향링크주파수 옵셋 추정 장치 및 방법 |
WO2006039812A1 (en) | 2004-10-15 | 2006-04-20 | Nortel Networks Limited | Communication resource allocation systems and methods |
DE202004021844U1 (de) | 2004-11-02 | 2011-08-03 | Lantiq Deutschland Gmbh | Vorrichtung zur paketorientierten Übertragung für ein WLAN |
DE102004052899B4 (de) * | 2004-11-02 | 2011-08-18 | Lantiq Deutschland GmbH, 85579 | Sowohl auf sporadische als auch auf kontinuierliche Datenkommunikation ausgerichtetes OFDM-Übertragungsverfahren für ein WLAN |
JP4504431B2 (ja) * | 2004-12-02 | 2010-07-14 | ニュージャージー インスティテュート オブ テクノロジー | 位相誤差雑音を推定するための方法およびシステム |
WO2006063424A1 (en) * | 2004-12-14 | 2006-06-22 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (mimo) orthogonal frequency division multiplexing (ofdm) system for wireless applications |
US7852822B2 (en) * | 2004-12-22 | 2010-12-14 | Qualcomm Incorporated | Wide area and local network ID transmission for communication systems |
ES2439461T3 (es) * | 2004-12-23 | 2014-01-23 | Electronics And Telecommunications Research Institute | Aparato para transmitir y recibir datos para proporcionar una comunicación de datos de alta velocidad y método para ello |
KR100634449B1 (ko) * | 2005-01-03 | 2006-10-16 | 삼성전자주식회사 | 가변 길이의 보호구간을 사용하는 오에프디엠 기반에서의보호구간의 길이 검출 방법 및 그 장치 |
KR100899749B1 (ko) * | 2005-01-13 | 2009-05-27 | 삼성전자주식회사 | 다중 입력 다중 출력 방식을 사용하는 직교 주파수 분할 다중 통신시스템에서 프리앰블 시퀀스 송수신 방법 |
US20060159194A1 (en) * | 2005-01-20 | 2006-07-20 | Texas Instruments Incorporated | Scalable pre-channel estimate phase corrector, method of correction and MIMO communication system employing the corrector and method |
US20060176966A1 (en) * | 2005-02-07 | 2006-08-10 | Stewart Kenneth A | Variable cyclic prefix in mixed-mode wireless communication systems |
KR101227212B1 (ko) * | 2005-02-09 | 2013-01-28 | 에이저 시스템즈 엘엘시 | 다중 안테나 통신 시스템에서 단축된 롱 트래이닝 필드를 갖는 프리앰블 트레이닝을 위한 방법 및 장치 |
US7554952B2 (en) * | 2005-02-09 | 2009-06-30 | Alcatel-Lucent Usa Inc. | Distributed multiple antenna scheduling for wireless packet data communication system using OFDM |
US8045599B2 (en) * | 2005-02-17 | 2011-10-25 | Sony Corporation | Selection of training sequences for multiple-in multiple-out transmissions |
US8811273B2 (en) * | 2005-02-22 | 2014-08-19 | Texas Instruments Incorporated | Turbo HSDPA system |
CN100459455C (zh) * | 2005-03-01 | 2009-02-04 | 普天信息技术研究院 | 一种基于智能天线的随机接入检测方法 |
US20060203793A1 (en) * | 2005-03-09 | 2006-09-14 | Lucent Technologies, Inc. | Method for increasing capacity in a wireless communications system |
US20060221810A1 (en) * | 2005-03-10 | 2006-10-05 | Bojan Vrcelj | Fine timing acquisition |
US20100185717A9 (en) * | 2005-03-10 | 2010-07-22 | Dhinakar Radhakrishnan | Method of improving control information acquisition latency by transmitting control information in individually decode-able packets |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US9520972B2 (en) * | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9461859B2 (en) * | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
CN1969475B (zh) | 2005-03-25 | 2012-07-04 | 桥扬科技有限公司 | 用于蜂窝广播和通信***的方法和设备 |
US8031583B2 (en) * | 2005-03-30 | 2011-10-04 | Motorola Mobility, Inc. | Method and apparatus for reducing round trip latency and overhead within a communication system |
US7693227B2 (en) * | 2005-03-31 | 2010-04-06 | Texas Instruments Incorporated | Channel length estimation and accurate FFT window placement for high-mobility OFDM receivers in single frequency networks |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US20060245509A1 (en) * | 2005-04-27 | 2006-11-02 | Samsung Electronics Co., Ltd | Method and system for processing MIMO pilot signals in an orthogonal frequency division multiplexing network |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US7684529B2 (en) * | 2005-05-26 | 2010-03-23 | Intel Corporation | Interference rejection in wireless networks |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US8155098B2 (en) * | 2005-06-09 | 2012-04-10 | Neocific, Inc. | Methods and apparatus for power efficient broadcasting and communication systems |
JP4869724B2 (ja) | 2005-06-14 | 2012-02-08 | 株式会社エヌ・ティ・ティ・ドコモ | 送信装置、送信方法、受信装置及び受信方法 |
JP4588548B2 (ja) * | 2005-06-15 | 2010-12-01 | 株式会社エヌ・ティ・ティ・ドコモ | 受信装置及び受信方法 |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US8670493B2 (en) | 2005-06-22 | 2014-03-11 | Eices Research, Inc. | Systems and/or methods of increased privacy wireless communications |
JP4546342B2 (ja) | 2005-07-07 | 2010-09-15 | パナソニック株式会社 | 送信装置および送信方法 |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
WO2007020710A1 (ja) * | 2005-08-19 | 2007-02-22 | Matsushita Electric Industrial Co., Ltd. | 基地局装置および移動局装置 |
US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
EP1906575A1 (en) * | 2005-08-22 | 2008-04-02 | Matsushita Electric Industrial Co., Ltd. | Base station apparatus and mobile station apparatus |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
EP1906572A4 (en) * | 2005-08-22 | 2012-05-02 | Panasonic Corp | BASIC STATION EQUIPMENT AND MOBILE STATION EQUIPMENT |
US8073063B2 (en) | 2005-08-23 | 2011-12-06 | Nortel Networks Limited | Methods and systems for orthogonal frequency division multiplexing (OFDM) multiple zone partitioning |
EP3709554B1 (en) | 2005-08-23 | 2021-09-22 | Apple Inc. | Pilot design for ofdm systems with four transmit antennas |
US7990932B2 (en) * | 2005-08-23 | 2011-08-02 | Nokia Corporation | Apparatus, method and computer program product providing initial cell acquisition and pilot sequence detection |
US8644292B2 (en) | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
JPWO2007023917A1 (ja) * | 2005-08-24 | 2009-02-26 | シャープ株式会社 | 無線通信方法および受信機 |
EP2790331B1 (en) | 2005-08-24 | 2019-01-09 | Wi-Fi One, LLC | MIMO-OFDM transmission device and MIMO-OFDM transmission method |
US9136974B2 (en) | 2005-08-30 | 2015-09-15 | Qualcomm Incorporated | Precoding and SDMA support |
KR100767312B1 (ko) | 2005-09-05 | 2007-10-17 | 한국전자통신연구원 | 셀룰러 시스템의 하향 링크 신호 생성 장치와 셀 탐색 방법및 장치 |
WO2007029958A1 (en) * | 2005-09-05 | 2007-03-15 | Electronics And Telecommunications Research Institute | Apparatus for generating down link signal, and method and apparatus for cell search in cellular system |
US8600336B2 (en) | 2005-09-12 | 2013-12-03 | Qualcomm Incorporated | Scheduling with reverse direction grant in wireless communication systems |
US8738053B2 (en) * | 2005-09-21 | 2014-05-27 | Broadcom Corporation | Method and system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission |
JP2009510820A (ja) * | 2005-09-27 | 2009-03-12 | ノキア コーポレイション | マルチキャリア伝送のためのパイロット構造 |
EP1956786A3 (en) * | 2005-09-30 | 2010-05-12 | Nortel Networks Limited | Initial access channel for scalable wireless mobile communication network |
EP2840724B1 (en) * | 2005-09-30 | 2019-11-20 | Apple Inc. | MIMO communication system |
WO2007037415A1 (ja) * | 2005-09-30 | 2007-04-05 | Sharp Kabushiki Kaisha | 無線送信装置、無線受信装置、無線通信システム、無線送信方法および無線受信方法 |
US7590184B2 (en) | 2005-10-11 | 2009-09-15 | Freescale Semiconductor, Inc. | Blind preamble detection for an orthogonal frequency division multiplexed sample stream |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US9088384B2 (en) | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
WO2007051040A1 (en) * | 2005-10-27 | 2007-05-03 | Qualcomm Incorporated | A method and apparatus for transmission of f-pbch1 packets in wireless communication systems |
JP4533833B2 (ja) * | 2005-10-31 | 2010-09-01 | 株式会社東芝 | 無線通信装置及び同期用シンボルにおける信号−サブキャリア割り当て方法 |
CA2628861C (en) * | 2005-11-07 | 2012-03-20 | Electronics And Telecommunications Research Institute | Method for using flexible bandwidth in ofdma-based cognitive radio system, base station and subscriber station using the same |
JP4852984B2 (ja) * | 2005-11-09 | 2012-01-11 | 株式会社日立製作所 | 複数基地局を用いた伝送路マルチ化システム |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US7623599B2 (en) * | 2005-11-21 | 2009-11-24 | Freescale Semiconductor, Inc. | Blind bandwidth detection for a sample stream |
JP4841235B2 (ja) | 2005-11-30 | 2011-12-21 | 富士通株式会社 | 無線基地局、無線通信方法及び無線通信システム |
KR100788894B1 (ko) * | 2005-12-09 | 2007-12-27 | 한국전자통신연구원 | 확대된 서비스 영역을 제공하는 직교 주파수 분할 다중방식의 무선 랜 송수신 시스템 및 그 방법 |
KR100973585B1 (ko) * | 2005-12-10 | 2010-08-02 | 한국전자통신연구원 | Mimo 이동 통신 시스템에서 타이밍 에러와 주파수오프셋을 추정하는 방법 및 그 장치 |
WO2007069203A2 (en) * | 2005-12-15 | 2007-06-21 | Koninklijke Philips Electronics N.V. | Ofdm system synchronization using correlations with known pilot patterns |
ES2306557B1 (es) * | 2005-12-23 | 2009-09-03 | Diseño De Sistemas En Silicio, S.A. | Procedimiento de transmision y recepcion de señales con diferentes frecuencias de muestreo. |
WO2008082038A1 (en) * | 2006-01-04 | 2008-07-10 | Electronics And Telecommunications Research Institute | Method for generating downlink signal, and method for searching cell |
KR100821275B1 (ko) * | 2006-01-04 | 2008-04-11 | 한국전자통신연구원 | 하향링크 신호를 생성하는 방법, 그리고 셀 탐색을수행하는 방법 |
US8831607B2 (en) | 2006-01-05 | 2014-09-09 | Qualcomm Incorporated | Reverse link other sector communication |
EP1977539A4 (en) * | 2006-01-06 | 2013-08-21 | Nokia Corp | SPECIAL SYNCHRONIZATION SIGNAL FOR AN OFDMA SYSTEM |
US9326221B2 (en) | 2006-01-26 | 2016-04-26 | Nokia Technologies Oy | Method and system for signaling neighboring signals in TPS bits |
US7983143B2 (en) | 2006-02-08 | 2011-07-19 | Motorola Mobility, Inc. | Method and apparatus for initial acquisition and cell search for an OFDMA system |
US7911935B2 (en) | 2006-02-08 | 2011-03-22 | Motorola Mobility, Inc. | Method and apparatus for interleaving sequence elements of an OFDMA synchronization channel |
JP4367422B2 (ja) * | 2006-02-14 | 2009-11-18 | ソニー株式会社 | 無線通信装置及び無線通信方法 |
KR101194072B1 (ko) * | 2006-02-15 | 2012-10-24 | 삼성전자주식회사 | 비동기식 이동통신시스템에서 오프라인 페이징 지시자정보를 획득하는 장치 및 방법 |
US7675844B2 (en) * | 2006-02-24 | 2010-03-09 | Freescale Semiconductor, Inc. | Synchronization for OFDM signals |
EP2475106A1 (en) | 2006-02-28 | 2012-07-11 | Rotani Inc. | Methods and apparatus for overlapping mimo antenna physical sectors |
US8605570B2 (en) * | 2006-03-07 | 2013-12-10 | Samsung Electronics Co., Ltd. | Method and system for generating a superframe preamble in an orthogonal frequency division multiplexing network |
US7773662B2 (en) * | 2006-03-08 | 2010-08-10 | Renesas Technology Corporation | Synchronizing to symbols received via wireless communications channel |
US8165018B2 (en) * | 2006-03-17 | 2012-04-24 | Rockstar Bidco, LP | Closed-loop MIMO systems and methods |
EP1999872B1 (en) * | 2006-03-24 | 2017-08-09 | LG Electronics Inc. | Ofdm symbol design for different channel conditions and for backward compatibility with 1xev-do and nxev-do |
CN101606427B (zh) * | 2006-03-24 | 2012-11-28 | Lg电子株式会社 | 减少多输入、多输出发送***的开销的方法 |
US7760617B2 (en) * | 2006-03-24 | 2010-07-20 | Lg Electronics Inc. | Method and structure of configuring preamble to support transmission of data symbol in a wireless communication system |
US8351405B2 (en) * | 2006-07-14 | 2013-01-08 | Qualcomm Incorporated | Method and apparatus for signaling beacons in a communication system |
US8045927B2 (en) * | 2006-04-27 | 2011-10-25 | Nokia Corporation | Signal detection in multicarrier communication system |
US8780936B2 (en) * | 2006-05-22 | 2014-07-15 | Qualcomm Incorporated | Signal acquisition for wireless communication systems |
CN101083647B (zh) * | 2006-05-30 | 2010-12-29 | 中兴通讯股份有限公司 | 一种多输入多输出正交频分复用***中实现同步的方法 |
US7991077B1 (en) | 2006-05-31 | 2011-08-02 | Marvell International Ltd. | Preamble detection with multiple receive antennas |
TWI690179B (zh) | 2006-06-09 | 2020-04-01 | 美商進化無線責任有限公司 | 行動通訊系統中傳送資料之方法和裝置 |
EP2030396B1 (en) * | 2006-06-16 | 2017-08-02 | QUALCOMM Incorporated | Efficent transmission a reception of beacon signals |
JP4935202B2 (ja) * | 2006-06-20 | 2012-05-23 | 富士通株式会社 | 通信システム |
US7675846B2 (en) | 2006-06-23 | 2010-03-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for using the synchronization channel to obtain measurements in a cellular communications system |
US7872961B2 (en) * | 2006-06-29 | 2011-01-18 | Motorola Mobility, Inc. | Orthogonal frequency division multiple access message processing method and apparatus |
CN100571243C (zh) * | 2006-07-14 | 2009-12-16 | 华为技术有限公司 | 一种组帧同步方法 |
WO2008013404A1 (en) | 2006-07-25 | 2008-01-31 | Electronics And Telecommunications Research Institute | Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure |
US20080025197A1 (en) * | 2006-07-28 | 2008-01-31 | Mccoy James W | Estimating frequency error of a sample stream |
US7876863B2 (en) * | 2006-08-10 | 2011-01-25 | Cisco Technology, Inc. | Method and system for improving timing position estimation in wireless communications networks |
WO2008018145A1 (fr) * | 2006-08-10 | 2008-02-14 | Panasonic Corporation | Appareil émetteur-récepteur ofdm |
US8400998B2 (en) | 2006-08-23 | 2013-03-19 | Motorola Mobility Llc | Downlink control channel signaling in wireless communication systems |
CN102932088B (zh) | 2006-09-29 | 2016-06-01 | 松下电器(美国)知识产权公司 | 基站装置和基站装置执行的通信方法 |
US7831414B2 (en) * | 2006-10-06 | 2010-11-09 | Qualcomm Incorporated | Method and apparatus for detecting a presence of a signal in a communication channel |
JP4944203B2 (ja) * | 2006-10-26 | 2012-05-30 | クゥアルコム・インコーポレイテッド | 無線通信システムにおけるキャリア周波数オフセット推定おびフレーム同期のための方法および装置 |
KR101208540B1 (ko) | 2006-10-30 | 2012-12-05 | 엘지전자 주식회사 | 코드 분할 다중 접속 방식 이동통신 시스템에서 동기 코드특성을 이용한 초기 셀 탐색 방법 및 장치 |
KR100810351B1 (ko) * | 2006-11-15 | 2008-03-04 | 재단법인서울대학교산학협력재단 | 통신 시스템에서 채널 프루빙 시스템 및 방법 |
CN101197804B (zh) * | 2006-12-04 | 2011-09-21 | 华为技术有限公司 | 一种同步处理方法及*** |
DE102006057316B4 (de) * | 2006-12-05 | 2020-12-03 | Rohde & Schwarz GmbH & Co. Kommanditgesellschaft | Messverfahren und Vorrichtung zur Beurteilung eines OFDM-Mehrantennensenders |
US20080165673A1 (en) * | 2007-01-09 | 2008-07-10 | Motorola, Inc. | System and method for demodulating data in an orthogonal frequency division modulation system |
US7912057B2 (en) * | 2007-01-12 | 2011-03-22 | Wi-Lan Inc. | Convergence sublayer for use in a wireless broadcasting system |
US20090252070A1 (en) * | 2007-01-12 | 2009-10-08 | Connors Dennis P | Airlink management in a wireless broadcast system |
US8774229B2 (en) * | 2007-01-12 | 2014-07-08 | Wi-Lan, Inc. | Multidiversity handoff in a wireless broadcast system |
US8064444B2 (en) * | 2007-01-12 | 2011-11-22 | Wi-Lan Inc. | Wireless broadcasting system |
US7944919B2 (en) * | 2007-01-12 | 2011-05-17 | Wi-Lan, Inc. | Connection identifier for wireless broadcast system |
JP5183219B2 (ja) * | 2007-01-18 | 2013-04-17 | パナソニック株式会社 | 無線送信方法、無線送信装置、無線受信方法、及び無線受信装置 |
US8548520B2 (en) | 2007-01-26 | 2013-10-01 | Wi-Lan Inc. | Multiple network access system and method |
ATE507644T1 (de) * | 2007-02-05 | 2011-05-15 | Sequans Comm | Verfahren und vorrichtung zur zeitsynchronisation und scanning von nachbarzellen für zelluläre ofdm-systeme |
US8027329B2 (en) * | 2007-02-07 | 2011-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Preamble design for synchronization and cell search |
KR20080089728A (ko) * | 2007-04-02 | 2008-10-08 | 엘지전자 주식회사 | 다중 부 반송파 시스템에서의 부 반송파 간격 적용 방법 및이를 지원하는 이동 단말 |
US20100074127A1 (en) * | 2007-02-15 | 2010-03-25 | Lei Xiao | Channel measurements on combined pilot signala in multi-carrier systems |
US9137075B2 (en) * | 2007-02-23 | 2015-09-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Subcarrier spacing identification |
US7684313B2 (en) * | 2007-03-30 | 2010-03-23 | Zoran Corporation | System and method for FFT window timing synchronization for an orthogonal frequency-division multiplexed data stream |
US7903604B2 (en) * | 2007-04-18 | 2011-03-08 | Wi-Lan Inc. | Method and apparatus for a scheduler for a macro-diversity portion of a transmission |
US8711833B2 (en) * | 2007-04-18 | 2014-04-29 | Wi-Lan, Inc. | Base station synchronization for a single frequency network |
US8665694B2 (en) * | 2007-08-14 | 2014-03-04 | Marvell World Trade Ltd. | Pilot design for universal frequency reuse in cellular orthogonal frequency-division multiplexing systems |
EP2597834B1 (en) | 2007-08-15 | 2015-10-07 | Marvell World Trade Ltd. | Pilot design for universal frequency reuse in cellular orthogonal frequency-division multiplexing systems |
CN101796862B (zh) * | 2007-09-04 | 2013-11-06 | 夏普株式会社 | 基站装置、移动站装置、分布天线无线通信***、导频信道生成方法、同步信道生成方法及天线选择方法 |
US7903750B2 (en) * | 2007-09-11 | 2011-03-08 | Zoran Corporation | System and method for determining transmission parameters in an orthogonal frequency-division multiplexed data stream |
US7782757B2 (en) * | 2007-10-03 | 2010-08-24 | Industrial Technology Research Institute | Adaptive pilot design for mobile system |
US7974254B2 (en) * | 2007-10-22 | 2011-07-05 | Nokia Corporation | Digital broadcast signaling metadata |
KR101101601B1 (ko) * | 2007-10-25 | 2012-01-02 | 후지쯔 가부시끼가이샤 | 송신 방법, 무선 기지국 및 이동국 |
WO2009059250A2 (en) * | 2007-10-31 | 2009-05-07 | Qualcomm Incorporated | Synchronization in a broadcast ofdm system using time division multiplexed pilots |
US8219891B2 (en) * | 2007-11-06 | 2012-07-10 | Qualcomm Incorporated | Method and apparatus for creating beamforming profiles in a wireless communication network |
US8175022B2 (en) * | 2007-12-19 | 2012-05-08 | Intel Corporation | Transmission of system configuration information in mobile WiMAX systems |
JP5136085B2 (ja) * | 2008-01-25 | 2013-02-06 | 富士通株式会社 | 受信装置及び移動端末装置並びに同期タイミング検出方法 |
EP2099185B1 (en) * | 2008-01-29 | 2017-07-12 | Telefonaktiebolaget LM Ericsson (publ) | Channel estimation in a terminal of an OFDM-based, cellular telecommunications system |
US8009685B2 (en) * | 2008-02-01 | 2011-08-30 | Nokia Corporation | Signalling the presence of extension frames |
WO2009123410A1 (en) * | 2008-03-31 | 2009-10-08 | Lg Electronics Inc. | A method for signaling uplink system configuration information |
GB2459284A (en) * | 2008-04-17 | 2009-10-21 | Stephen George Nunney | MIMO spatial multiplexing system |
US7843806B2 (en) * | 2008-05-07 | 2010-11-30 | Wipro Techno Centre (Singapore) Pte Ltd. | Apparatus and methods for estimating and compensating sampling clock offset |
KR101083575B1 (ko) | 2008-07-04 | 2011-11-14 | 주식회사 세아네트웍스 | 파일럿 할당 방법 |
US8811339B2 (en) | 2008-07-07 | 2014-08-19 | Blackberry Limited | Handover schemes for wireless systems |
KR101488028B1 (ko) | 2008-07-17 | 2015-01-30 | 엘지전자 주식회사 | 다중 안테나 시스템에서 참조신호 전송 방법 |
KR101027233B1 (ko) * | 2008-07-23 | 2011-04-06 | 엘지전자 주식회사 | 다중 안테나 시스템에서 참조신호 전송 방법 |
US8665803B2 (en) | 2008-07-31 | 2014-03-04 | Qualcomm Incorporated | Tone selection in communication networks |
US8670376B2 (en) * | 2008-08-12 | 2014-03-11 | Qualcomm Incorporated | Multi-carrier grant design |
ATE543311T1 (de) * | 2008-08-18 | 2012-02-15 | Research In Motion Ltd | Systeme und verfahren zur auswahl, übertragung und zum empfang von trainingssequenzen |
JP4666031B2 (ja) | 2008-09-09 | 2011-04-06 | ソニー株式会社 | 同期回路並びに無線通信装置 |
JP4636162B2 (ja) * | 2008-10-10 | 2011-02-23 | ソニー株式会社 | 無線通信装置及び無線通信方法 |
WO2010047514A2 (en) * | 2008-10-21 | 2010-04-29 | Lg Electronics Inc. | Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal |
US8711672B2 (en) * | 2008-12-30 | 2014-04-29 | Acer Incorporated | Wireless communication system using pilot allocation, method and pilot pattern thereof |
WO2010093028A1 (en) * | 2009-02-10 | 2010-08-19 | Nec Corporation | Non-coherent detection method of the number of transmit antenna ports for ofdma |
US9397876B2 (en) * | 2009-02-20 | 2016-07-19 | Broadcom Corporation | Synchronization and frame structure determination of a base station |
US8107888B2 (en) * | 2009-03-04 | 2012-01-31 | Clearwire IP Holdings, LLC | Communication operating mode selection based on multi-path signal power measurement |
GB2470758B (en) * | 2009-06-03 | 2014-08-20 | Sony Corp | Data processing apparatus and method |
US8638834B2 (en) * | 2009-07-15 | 2014-01-28 | Cisco Technology, Inc. | Signal sequence detection techniques for OFDM/OFDMA systems |
CN102484567B (zh) | 2009-08-21 | 2016-02-10 | 阿瓦尔有限公司 | 基于分组的ofdm***中的报头重复 |
CN102845006B (zh) * | 2009-12-28 | 2016-08-03 | 爱立信(中国)通信有限公司 | 用于ofdm***的延迟校准的方法和装置 |
CN101778088B (zh) * | 2010-03-12 | 2012-05-30 | 中国科学院声学研究所 | 一种基于伪随机序列调制的训练序列帧定时同步方法 |
KR101684971B1 (ko) | 2010-03-25 | 2016-12-09 | 엘지전자 주식회사 | 분산된 안테나 시스템에서 동기 신호 송수신 방법 및 장치 |
WO2011118927A2 (en) * | 2010-03-25 | 2011-09-29 | Lg Electronics Inc. | Method and apparatus of transmitting and receiving synchronization signal in a distributed antenna system |
CN102404089B (zh) * | 2010-09-08 | 2016-04-27 | 兰蒂克德国有限责任公司 | 用于多输入多输出的帧结构 |
US8547884B2 (en) | 2010-09-28 | 2013-10-01 | Neocific, Inc. | Methods and apparatus for flexible use of frequency bands |
IL210169A0 (en) | 2010-12-22 | 2011-03-31 | Yehuda Binder | System and method for routing-based internet security |
JP2012165040A (ja) * | 2011-02-03 | 2012-08-30 | Sharp Corp | 受信装置、受信方法、通信システムおよび通信方法 |
US20130315323A1 (en) | 2011-04-24 | 2013-11-28 | Broadcom Corporation | Traveling pilots within single user, multiple user, multiple access, and/or MIMO wireless communications |
WO2012167439A1 (zh) * | 2011-06-10 | 2012-12-13 | 华为技术有限公司 | 用于测量线路的信号发送方法、装置及通信设备 |
KR20130006935A (ko) * | 2011-06-27 | 2013-01-18 | 삼성전자주식회사 | 수신기 및 이의 동작 방법 |
WO2013093550A1 (en) | 2011-12-19 | 2013-06-27 | Nokia Corporation | An apparatus and associated methods for switching between antennas in a multi-antenna receiver |
TWI470958B (zh) * | 2012-01-03 | 2015-01-21 | Mstar Semiconductor Inc | 應用於無線網路接收端以判斷發射端天線數目的方法與相關裝置 |
CN103378897B (zh) * | 2012-04-23 | 2017-12-22 | 中兴通讯股份有限公司 | 实现cmmb分集接收的方法及装置 |
CN104756563A (zh) | 2012-08-31 | 2015-07-01 | 诺基亚技术有限公司 | 定位装置 |
US8817735B1 (en) * | 2012-09-28 | 2014-08-26 | Sprint Spectrum L.P. | Systems and methods for allocating fully-orthogonal and quasi-orthogonal spreading codes to access terminals in radio access networks based on a tolerance level for additional interference on a per-access-terminal basis |
EP2907285B1 (en) * | 2012-10-12 | 2020-04-01 | Nokia Solutions and Networks Oy | Vswr estimation using correlation to suppress external interference |
EP2918034A1 (en) * | 2012-11-09 | 2015-09-16 | Interdigital Patent Holdings, Inc. | Method and apparatus for coordinated orthogonal channel access (coca) |
EP2942917B1 (en) * | 2013-02-13 | 2018-05-23 | Nippon Telegraph and Telephone Corporation | Optical transmission system, phase compensation method, and optical reception device |
EP2982088B1 (en) * | 2013-04-01 | 2019-06-05 | Harman International Industries, Incorporated | Coarse timing |
CN103259757B (zh) * | 2013-05-22 | 2015-10-21 | 西南石油大学 | 一种有效的mimo-ofdm***的时间与频率同步新方法 |
CN103298101B (zh) * | 2013-06-19 | 2016-02-17 | 中国人民解放军空军工程大学 | 一种宽范围的码辅助载波同步实现方法 |
JP6586418B2 (ja) | 2013-08-21 | 2019-10-02 | マイリオタ ピーティーワイ エルティーディーMyriota Pty Ltd | マルチユーザ通信システム |
CN103647742B (zh) * | 2013-12-25 | 2017-09-08 | 上海贝岭股份有限公司 | 电力线载波ofdm***的通信方法和设备 |
US20150215880A1 (en) * | 2014-01-28 | 2015-07-30 | Qualcomm Incorporated | Devices and methods for locating received tones in wireless communications systems |
US10693623B2 (en) * | 2014-01-31 | 2020-06-23 | Apple Inc. | Reference subframes for synchronization and cell measurements |
CA2955611C (en) | 2014-08-07 | 2022-03-22 | Coherent Logix, Incorporated | Multi-partition radio frames |
CA3060532C (en) * | 2014-08-07 | 2022-03-15 | ONE Media, LLC | Dynamic configuration of a flexible orthogonal frequency division multiplexing phy transport data frame |
US20160100373A1 (en) * | 2014-10-07 | 2016-04-07 | Mediatek Inc. | Signal Format for Cell Search and Synchronization in Wireless Networks |
US9374796B2 (en) * | 2014-10-10 | 2016-06-21 | Qualcomm Incorporated | Channel structure for a cellular internet of things system |
US9596105B1 (en) * | 2014-12-05 | 2017-03-14 | Marvell Intenational Ltd. | Time tracking schemes for reduced ISI in multi-transmission-point OFDM systems |
JPWO2016133044A1 (ja) * | 2015-02-20 | 2017-12-14 | 日本電気株式会社 | 受信装置、受信方法 |
CN106209298B (zh) * | 2015-04-29 | 2019-08-06 | 扬智科技股份有限公司 | 峰值计算方法和装置及使用该方法的帧头检测方法 |
GB2539018B (en) * | 2015-06-03 | 2019-11-06 | Imagination Tech Ltd | Sampling frequency offset calculation |
CN107017976B (zh) * | 2015-06-05 | 2020-04-17 | 上海数字电视国家工程研究中心有限公司 | 前导符号信号长度的选取方法 |
US10897154B2 (en) * | 2015-07-21 | 2021-01-19 | Koninklijke Philips N.V. | Inductive wireless power transfer with synchronized power measurement |
US10952043B2 (en) | 2015-08-21 | 2021-03-16 | Nec Corporation | Vehicle to everything (V2X) communication method and system |
US10333668B2 (en) * | 2015-10-05 | 2019-06-25 | Qualcomm Incorporated | Enhanced component carrier discovery reference signals |
WO2017135878A1 (en) * | 2016-02-04 | 2017-08-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for supporting cell selection and cell reselection in a wireless communication network |
KR101796440B1 (ko) * | 2016-02-05 | 2017-11-10 | 주식회사 이노와이어리스 | 신호 분석기에서 gsm 신호의 슬롯 동기화 방법 |
GB2547267A (en) * | 2016-02-12 | 2017-08-16 | Sony Corp | Transmitter, receiver and methods |
GB2547266A (en) | 2016-02-12 | 2017-08-16 | Sony Corp | Transmitter, receiver and methods |
CN105577600B (zh) * | 2016-03-16 | 2019-02-05 | 东南大学 | Mimo-ofdm wlan***的同步方法及*** |
CN113949613B (zh) | 2016-03-31 | 2024-06-28 | 弗劳恩霍夫应用研究促进协会 | 用于接收数据分组的方法、接收机和计算机可读存储介质 |
CN107623652B (zh) * | 2016-07-14 | 2022-01-11 | 中兴通讯股份有限公司 | 一种数据传输方法及装置 |
CN107786314B (zh) * | 2016-08-27 | 2020-05-26 | 上海朗帛通信技术有限公司 | 一种无线通信中的方法和装置 |
CN106302297B (zh) * | 2016-09-22 | 2019-05-03 | 大连海事大学 | 一种循环卷积六边形多载波传输方法 |
US11916720B2 (en) | 2016-09-30 | 2024-02-27 | Sony Group Corporation | Subcarrier spacing selection for synchronization signals |
US10257012B2 (en) * | 2016-12-13 | 2019-04-09 | Samsung Electronics Co., Ltd | Apparatus and method for coarse timing and frequency synchronization |
EP4254919A1 (de) | 2017-03-30 | 2023-10-04 | RIEDEL Communications International GmbH | Netzwerkgerät für ein intercom-netzwerk |
JP7068601B2 (ja) * | 2017-03-30 | 2022-05-17 | 日本電気株式会社 | マルチトーン信号検出装置、マルチトーン信号検出方法及びプログラム |
DE102017116273A1 (de) | 2017-03-30 | 2018-10-04 | Riedel Communications International GmbH | Netzwerkgerät für ein Intercom-Netzwerk |
MX2019012995A (es) * | 2017-05-02 | 2020-07-28 | Interdigital Patent Holdings Inc | Codificación de forma de onda con modulación para transmisiones de usuario único y de usuarios múltiples. |
US10666489B2 (en) * | 2017-09-18 | 2020-05-26 | Apple Inc. | Synchronization sequence design for device-to-device communication |
CN108040028A (zh) * | 2017-12-22 | 2018-05-15 | 中国人民解放军国防科技大学 | 一种基于本地序列互相关检测的ofdm***抗干扰信号检测与同步方法 |
US10924303B2 (en) * | 2018-03-05 | 2021-02-16 | Apple Inc. | Secure training sequence symbol structure |
CN110708266A (zh) * | 2018-07-09 | 2020-01-17 | 普天信息技术有限公司 | 无线网络同步方法及装置 |
CN109412996A (zh) * | 2018-12-11 | 2019-03-01 | 深圳大学 | 链路自适应方法、电子装置及计算机可读存储介质 |
CN110336765B (zh) * | 2019-07-05 | 2022-04-01 | 北京神经元网络技术有限公司 | 高速工业通信***的同步方法、装置、网络设备及存储介质 |
CN111800366B (zh) * | 2020-07-02 | 2022-08-26 | 东方红卫星移动通信有限公司 | 复杂多径环境下的ofdm符号定时同步方法及接收设备 |
CN111740937B (zh) * | 2020-08-13 | 2020-11-10 | 中国人民解放军国防科技大学 | 无线宽带通信***的同步方法、装置、设备及存储介质 |
CN114363198B (zh) * | 2022-01-14 | 2023-07-21 | 深圳市优网科技有限公司 | 数据采集方法及装置、存储介质及电子设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5818813A (en) * | 1995-09-06 | 1998-10-06 | Advanced Digital Television Broadcasting Laboratory | Orthogonal frequency division multiplexing transmission system and transmitter and receiver adapted to the same |
KR20000074825A (ko) * | 1999-05-26 | 2000-12-15 | 오성근 | 안테나 배열을 이용한 동기화 시스템을 위한 신호 결합 장치 |
Family Cites Families (70)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US80887A (en) * | 1868-08-11 | James waldie | ||
US122382A (en) * | 1872-01-02 | Improvement in argand gas-burners | ||
US122381A (en) * | 1872-01-02 | Improvement in machines for making carpet-lining | ||
SE500986C2 (sv) * | 1993-07-20 | 1994-10-17 | Telia Ab | Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM |
US5581555A (en) | 1993-09-17 | 1996-12-03 | Scientific-Atlanta, Inc. | Reverse path allocation and contention resolution scheme for a broadband communications system |
JP2731722B2 (ja) * | 1994-05-26 | 1998-03-25 | 日本電気株式会社 | クロック周波数自動制御方式及びそれに用いる送信装置と受信装置 |
GB9413481D0 (en) * | 1994-07-05 | 1994-08-24 | British Broadcasting Corp | Improvements to digital transmission systems |
US5598582A (en) * | 1995-03-06 | 1997-02-04 | Marmon Holdings, Inc. | Heat resistant and cut and puncture protective hand covering |
US5726978A (en) * | 1995-06-22 | 1998-03-10 | Telefonaktiebolaget L M Ericsson Publ. | Adaptive channel allocation in a frequency division multiplexed system |
WO1997033400A1 (fr) * | 1996-03-05 | 1997-09-12 | Ntt Mobile Communications Network Inc. | Procede de transmission de signaux, emetteur, recepteur, et procede de synchronisation de code a etalement de spectre pour systeme de communication mobile |
IL129655A0 (en) | 1996-10-31 | 2000-02-29 | Discovision Ass | Digital receiver |
KR100221336B1 (ko) * | 1996-12-28 | 1999-09-15 | 전주범 | 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법 |
US5933421A (en) * | 1997-02-06 | 1999-08-03 | At&T Wireless Services Inc. | Method for frequency division duplex communications |
WO1998037654A2 (en) | 1997-02-24 | 1998-08-27 | At & T Wireless Services, Inc. | Vertical adaptive antenna array for a discrete multitone spread spectrum communications system |
US6175550B1 (en) * | 1997-04-01 | 2001-01-16 | Lucent Technologies, Inc. | Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof |
US6137847A (en) * | 1997-05-02 | 2000-10-24 | Lsi Logic Corporation | Demodulating digital video broadcast signals |
US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
KR100581780B1 (ko) | 1997-07-01 | 2006-05-24 | 마츠시타 덴끼 산교 가부시키가이샤 | 송신 방법, 수신 방법, 송신 장치 및 수신 장치 |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
GB2332603B (en) * | 1997-12-22 | 2000-07-19 | Lsi Logic Corp | Improvements relating to multidirectional communication systems |
EP2254301B1 (en) * | 1998-01-06 | 2013-06-19 | Mosaid Technologies Incorporated | Multicarrier modulation system with variable symbol rates |
EP0938193A1 (en) * | 1998-02-18 | 1999-08-25 | Sony International (Europe) GmbH | Header structure for TDD systems |
FI105437B (fi) * | 1998-09-08 | 2000-08-15 | Domiras Oy | Menetelmä langattomassa tietoliikennejärjestelmässä, järjestelmä, lähetin ja vastaanotin |
US6798736B1 (en) * | 1998-09-22 | 2004-09-28 | Qualcomm Incorporated | Method and apparatus for transmitting and receiving variable rate data |
US6205193B1 (en) * | 1998-10-15 | 2001-03-20 | Ericsson Inc. | Systems and methods for fast terminal synchronization in a wireless communication system |
JP2000252951A (ja) | 1999-03-01 | 2000-09-14 | Sony Corp | 同期信号検出方法及び無線通信装置 |
ES2212484T3 (es) * | 1999-03-12 | 2004-07-16 | Motorola, Inc. | Aparatos y metodo de generacion de los factores de ponderacion de las antenas transmisoras. |
US6480558B1 (en) * | 1999-03-17 | 2002-11-12 | Ericsson Inc. | Synchronization and cell search methods and apparatus for wireless communications |
US6606341B1 (en) * | 1999-03-22 | 2003-08-12 | Golden Bridge Technology, Inc. | Common packet channel with firm handoff |
MY128734A (en) * | 1999-03-22 | 2007-02-28 | Golden Bridge Tech Inc | Common packet channel |
US6498934B1 (en) * | 1999-03-24 | 2002-12-24 | Telefonaktiebologet Lm Ericsson (Publ) | Channel allocation using enhanced pathloss estimates |
DE69932150T2 (de) | 1999-04-23 | 2006-11-09 | Sony Deutschland Gmbh | Synchronisierungspräambel in einem OFDM-System |
TW463481B (en) * | 1999-04-28 | 2001-11-11 | Fujitsu Ltd | Cell search method, communication synchronization apparatus, portable terminal apparatus, and recording medium |
AU740804B2 (en) * | 1999-07-19 | 2001-11-15 | Nippon Telegraph & Telephone Corporation | OFDM packet communication receiver system |
JP3596442B2 (ja) | 1999-07-19 | 2004-12-02 | 日本電信電話株式会社 | 無線パケット通信用ofdm受信装置 |
US6115406A (en) * | 1999-09-10 | 2000-09-05 | Interdigital Technology Corporation | Transmission using an antenna array in a CDMA communication system |
AU779339B2 (en) * | 1999-10-22 | 2005-01-20 | Google Technology Holdings LLC | Fixed OFDM wireless man utilizing CPE having internal antenna |
JP2001128215A (ja) | 1999-10-29 | 2001-05-11 | Matsushita Electric Ind Co Ltd | Tdma−tdd方式送受信装置および送受信方法 |
US7206580B2 (en) * | 1999-11-04 | 2007-04-17 | Qualcomm Incorporated | Method and apparatus for performing handoff in a high speed communication system |
US6298092B1 (en) * | 1999-12-15 | 2001-10-02 | Iospan Wireless, Inc. | Methods of controlling communication parameters of wireless systems |
AU2335201A (en) | 1999-12-23 | 2001-07-09 | Institut National De La Recherche Scientifique | Interference suppression in cdma systems |
JP3522619B2 (ja) * | 2000-01-05 | 2004-04-26 | 株式会社エヌ・ティ・ティ・ドコモ | マルチキャリアcdma伝送システムにおける送信機 |
KR20010077186A (ko) * | 2000-02-01 | 2001-08-17 | 박종섭 | 직교 주파수 분할 다중화 방식 송신 시스템의 보호구간삽입장치 |
US6650617B1 (en) * | 2000-02-22 | 2003-11-18 | Thomson Licensing S.A. | Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system |
US6473467B1 (en) * | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
US20020154705A1 (en) | 2000-03-22 | 2002-10-24 | Walton Jay R. | High efficiency high performance communications system employing multi-carrier modulation |
US6493331B1 (en) * | 2000-03-30 | 2002-12-10 | Qualcomm Incorporated | Method and apparatus for controlling transmissions of a communications systems |
US6961364B1 (en) * | 2000-04-18 | 2005-11-01 | Flarion Technologies, Inc. | Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems |
CN1118195C (zh) * | 2000-08-25 | 2003-08-13 | 清华大学 | 数字信息传输方法及其地面数字多媒体电视广播*** |
US7406104B2 (en) * | 2000-08-25 | 2008-07-29 | Lin Yang | Terrestrial digital multimedia/television broadcasting system |
US7233625B2 (en) * | 2000-09-01 | 2007-06-19 | Nortel Networks Limited | Preamble design for multiple input—multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system |
US7009931B2 (en) | 2000-09-01 | 2006-03-07 | Nortel Networks Limited | Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications |
US6850481B2 (en) | 2000-09-01 | 2005-02-01 | Nortel Networks Limited | Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system |
US6985434B2 (en) | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
KR100358120B1 (ko) | 2000-10-20 | 2002-10-25 | 한국전자통신연구원 | 동일대역 인접채널 방식의 디지털 오디오 방송 전송 시스템 |
US7106709B2 (en) * | 2000-11-29 | 2006-09-12 | Telefonaktiebologet Lm Ericsson (Publ) | Timing drift compensation in wireless packet-based systems |
US6947748B2 (en) * | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US20030084020A1 (en) | 2000-12-22 | 2003-05-01 | Li Shu | Distributed fault tolerant and secure storage |
US20030002471A1 (en) | 2001-03-06 | 2003-01-02 | Crawford James A. | Method for estimating carrier-to-noise-plus-interference ratio (CNIR) for OFDM waveforms and the use thereof for diversity antenna branch selection |
US7088782B2 (en) * | 2001-04-24 | 2006-08-08 | Georgia Tech Research Corporation | Time and frequency synchronization in multi-input, multi-output (MIMO) systems |
US6959050B2 (en) * | 2001-06-15 | 2005-10-25 | Motorola, Inc. | Method and apparatus for synchronizing an OFDM signal |
US7027429B2 (en) * | 2001-06-19 | 2006-04-11 | Flarion Technologies, Inc. | Method and apparatus for time and frequency synchronization of OFDM communication systems |
US7190748B2 (en) * | 2001-08-17 | 2007-03-13 | Dsp Group Inc. | Digital front-end for wireless communication system |
US7088787B2 (en) | 2001-09-24 | 2006-08-08 | Atheros Communications, Inc. | Post-FFT scaling to reduce multiple effects |
US7269127B2 (en) * | 2001-10-04 | 2007-09-11 | Bae Systems Information And Electronic Systems Integration Inc. | Preamble structures for single-input, single-output (SISO) and multi-input, multi-output (MIMO) communication systems |
US7548506B2 (en) * | 2001-10-17 | 2009-06-16 | Nortel Networks Limited | System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design |
US7940640B2 (en) | 2006-01-20 | 2011-05-10 | Nortel Networks Limited | Adaptive orthogonal scheduling for virtual MIMO system |
CN101106800B (zh) | 2006-07-11 | 2012-08-29 | 工业和信息化部电信传输研究所 | 一种用于上行交织多址***的资源调度方法 |
US8274952B2 (en) | 2006-10-10 | 2012-09-25 | Alcatel Lucent | Transmission power management |
US7483808B2 (en) | 2007-06-29 | 2009-01-27 | Caterpillar Inc. | System and method for measuring machine rolling resistance |
-
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5818813A (en) * | 1995-09-06 | 1998-10-06 | Advanced Digital Television Broadcasting Laboratory | Orthogonal frequency division multiplexing transmission system and transmitter and receiver adapted to the same |
KR20000074825A (ko) * | 1999-05-26 | 2000-12-15 | 오성근 | 안테나 배열을 이용한 동기화 시스템을 위한 신호 결합 장치 |
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