JP4323381B2 - 無線受信装置 - Google Patents
無線受信装置 Download PDFInfo
- Publication number
- JP4323381B2 JP4323381B2 JP2004165938A JP2004165938A JP4323381B2 JP 4323381 B2 JP4323381 B2 JP 4323381B2 JP 2004165938 A JP2004165938 A JP 2004165938A JP 2004165938 A JP2004165938 A JP 2004165938A JP 4323381 B2 JP4323381 B2 JP 4323381B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- antenna
- unit
- reception
- diversity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/005—Positioning devices for conditioning tools
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
- H04B7/0811—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception during preamble or gap period
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Radio Transmission System (AREA)
Description
AD変換部28の出力信号32をラッチ部44から入力して、比較する。この比較によりアンテナを確定させる。この後、データ比較部48にて判断するが、図4(c)の時刻68における出力信号32は、パワー検出閾値64よりも小さい。したがって、データ比較部48は判断信号66を偽として出力する。
12a, 12b アンテナ
14 RF部
16 ベースバンド部
18 RFスイッチ部
20 AD変換部
28 RSSI AD変換部
30 I/Q AD変換部
34 ダイバーシティ機能付RSSIパワー検出部
38 I/Q部
380 I/Q検出部
382 I/Q復調部
Claims (2)
- 複数のアンテナと、
該アンテナで受信した信号を切り替える切替手段と、
前記受信した信号それぞれに含まれる同相/直交成分に対する相関値を比較して、前記アンテナの一つを選択し、前記切替手段を制御する第1の選択制御手段と、
前記受信した信号の強度を指標として測定するとともに、ダイバーシティの受信におけるアンテナの選択制御および第1の選択制御手段の起動を制御する第2の選択制御手段とを含み、
第2の選択制御手段は、供給される受信信号に対して平均化するフィルタ処理を感度として異なる感度でそれぞれ施すフィルタ手段を具備し、
該フィルタ手段は、前記フィルタ処理の感度を高めて、前記供給される受信信号とほぼ同じ特性の受信信号を出力する第1のフィルタ手段と、
第1のフィルタ手段に比べて前記感度を低下させ、より平均化された受信信号を出力する第2のフィルタ手段とを含み、
第1のフィルタ手段からの出力を基に信号の強度指標を測定させる第1の起動信号を生成する起動手段と、
第2のフィルタ手段から供給される前記アンテナそれぞれの受信信号を保持する保持手段と、
第1の起動信号が出力される期間に前記保持した受信信号のそれぞれを基にあらかじめ設定した条件を満足するか否かに応じて前記アンテナの切替を生成し、前記アンテナの選択を確定する制御手段と、
前記アンテナ確定後に第2のフィルタ手段を介して供給される受信信号と所定の閾値との比較に基づいて前記受信信号が誤検出か否かを判断する判断手段とを含み、
前記制御手段は、前記誤検出の判断に応じて前記起動手段および前記ラッチ手段にそれぞれリセットする信号、ならびに第2の選択制御手段を起動する第2の起動信号を生成することを特徴とする無線受信装置。 - 請求項1に記載の装置において、第2の選択制御手段は、供給される受信信号を基に信号の強度指標を測定させる第1の起動信号を生成する起動手段と、
前記アンテナそれぞれから供給される受信信号を保持する保持手段と、
第1の起動信号が出力される期間に前記保持した受信信号のそれぞれを基にあらかじめ設定した条件を満足するか否かに応じて前記アンテナの切替を生成し、前記アンテナの選択を確定する制御手段と、
前記アンテナ確定後に供給される受信信号と所定の閾値との比較に基づいて前記受信信号が誤検出か否かを判断する判断手段とを含み、
前記制御手段は、前記判断信号に応じて第2の選択制御手段を起動する第2の起動信号を生成することを特徴とする無線受信装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004165938A JP4323381B2 (ja) | 2004-06-03 | 2004-06-03 | 無線受信装置 |
CNA2005100028614A CN1705258A (zh) | 2004-06-03 | 2005-01-25 | 无线接收信号装置以及天线选择方法 |
KR1020050016470A KR101169357B1 (ko) | 2004-06-03 | 2005-02-28 | 무선수신장치 및 안테나 선택방법 |
US11/142,274 US7400872B2 (en) | 2004-06-03 | 2005-06-02 | Radio receiver for selecting appropriate diversity antennas by comparing correlation values and a method for the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004165938A JP4323381B2 (ja) | 2004-06-03 | 2004-06-03 | 無線受信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005348137A JP2005348137A (ja) | 2005-12-15 |
JP4323381B2 true JP4323381B2 (ja) | 2009-09-02 |
Family
ID=35449615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004165938A Expired - Fee Related JP4323381B2 (ja) | 2004-06-03 | 2004-06-03 | 無線受信装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7400872B2 (ja) |
JP (1) | JP4323381B2 (ja) |
KR (1) | KR101169357B1 (ja) |
CN (1) | CN1705258A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014137108A1 (en) * | 2013-03-06 | 2014-09-12 | Samsung Electronics Co., Ltd. | Mobile device for power reduction and method thereof |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4166026B2 (ja) | 2002-03-22 | 2008-10-15 | 三洋電機株式会社 | 無線装置、空間パス制御方法および空間パス制御プログラム |
US8441913B2 (en) * | 2005-09-27 | 2013-05-14 | Qualcomm Incorporated | Switching diversity in broadcast OFDM systems based on multiple receive antennas |
US8064835B2 (en) * | 2006-01-11 | 2011-11-22 | Quantenna Communications, Inc. | Antenna assignment system and method |
US8091012B2 (en) * | 2006-05-04 | 2012-01-03 | Quantenna Communications Inc. | System and method for decreasing decoder complexity |
WO2007130578A2 (en) * | 2006-05-04 | 2007-11-15 | Quantenna Communications, Inc. | Multiple antenna receiver system and method |
US20070281654A1 (en) * | 2006-05-30 | 2007-12-06 | Joonsang Choi | Method and apparatus for selecting antenna for ranging detection in orthogonal frequency division multiple access system |
EP2039045B1 (en) * | 2006-07-12 | 2012-12-19 | Greenpeak Technologies B.V. | Receiver for receiving data symbols having a symbol period |
KR101231473B1 (ko) * | 2006-08-14 | 2013-02-07 | 엘지이노텍 주식회사 | Rfid 시스템 |
US8798552B2 (en) * | 2006-08-22 | 2014-08-05 | Samsung Electronics Co., Ltd. | Reconfigurable wireless transceiver |
US20080090564A1 (en) * | 2006-10-15 | 2008-04-17 | Hamid Najafi | Wireless phone module and method |
US8063839B2 (en) | 2006-10-17 | 2011-11-22 | Quantenna Communications, Inc. | Tunable antenna system |
CA2676406C (en) * | 2007-02-05 | 2015-04-07 | Research In Motion Limited | Apparatus, and associated method, for operating upon received data at a receiving station capable of diversity operation |
WO2009054938A1 (en) * | 2007-10-19 | 2009-04-30 | Quantenna Communications, Inc. | Mitigating interference in a coded communication system |
FI20075974A0 (fi) | 2007-12-28 | 2007-12-28 | Nokia Corp | Laite ja menetelmä |
KR100968970B1 (ko) * | 2007-12-29 | 2010-07-14 | 삼성전기주식회사 | 안테나 다이버시티 수신기 |
US8086195B2 (en) * | 2008-02-22 | 2011-12-27 | Motorola Mobility, Inc. | Communication unit and method of operation therefor |
JP5387120B2 (ja) * | 2009-05-11 | 2014-01-15 | 株式会社リコー | 無線通信端末 |
US9356678B2 (en) | 2011-01-14 | 2016-05-31 | Koninklijke Philips N.V. | Diverse radio receiver system |
US20130033996A1 (en) * | 2011-08-05 | 2013-02-07 | Kee-Bong Song | Electronic device with antenna switching capabilities |
CN102315904B (zh) * | 2011-09-05 | 2014-02-19 | 新邮通信设备有限公司 | 一种优化物理上行链路控制信道检测与测量的方法 |
US9432918B2 (en) * | 2012-11-13 | 2016-08-30 | Qualcomm Incorporated | Apparatus and methods of receive diversity (RXD) full cell search |
US9885787B2 (en) * | 2014-07-28 | 2018-02-06 | Echostar Technologies L.L.C. | Electronic satellite feed switcher |
US9768825B2 (en) | 2014-11-03 | 2017-09-19 | Apple Inc. | Wi-Fi adaptive transmit antenna selection |
US10020862B2 (en) | 2014-11-03 | 2018-07-10 | Apple Inc. | Wi-Fi adaptive receiver diversity |
US9853681B2 (en) | 2014-11-03 | 2017-12-26 | Apple Inc. | Arbitrator for multi-radio antenna switching |
US11201398B2 (en) * | 2019-10-28 | 2021-12-14 | Nanning Fugui Precision Industrial Co., Ltd. | Antenna device and method for determining radiation pattern |
KR20220015810A (ko) * | 2020-07-31 | 2022-02-08 | 삼성전자주식회사 | 전자 장치 및 안테나 운용 방법 |
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US5446922A (en) * | 1992-12-21 | 1995-08-29 | Motorola, Inc. | Method and apparatus for switched diversity reception of a radio signal |
US5561673A (en) * | 1993-04-16 | 1996-10-01 | Matsushita Electric Industrial Co., Ltd. | Antenna switched diversity reciever |
US5507035A (en) * | 1993-04-30 | 1996-04-09 | International Business Machines Corporation | Diversity transmission strategy in mobile/indoor cellula radio communications |
US5499397A (en) * | 1994-05-02 | 1996-03-12 | Motorola, Inc. | Switched antenna diversity algorithm employing received signal strength, phase errors and recovered clock |
GB2308530B (en) * | 1995-12-21 | 2000-03-22 | Nokia Mobile Phones Ltd | Antenna selection control circuitry |
JP3141784B2 (ja) * | 1996-07-10 | 2001-03-05 | 双葉電子工業株式会社 | 受信アンテナ選択方法およびダイバーシティ受信機 |
US6032033A (en) * | 1996-12-03 | 2000-02-29 | Nortel Networks Corporation | Preamble based selection diversity in a time division multiple access radio system using digital demodulation |
DE69809596D1 (de) * | 1997-12-30 | 2003-01-02 | Ericsson Inc | Vereinheitlichtes antennendiversityschaltungssystem für tdma-telefone |
JP3458772B2 (ja) * | 1999-06-30 | 2003-10-20 | 日本電気株式会社 | ディジタル多重受信装置及び受信方法 |
DE10102616A1 (de) * | 2000-02-17 | 2001-08-23 | Heinz Lindenmeier | Antennendiversityanlage mit phasengeregelter Summation von Antennensignalen |
JP3715606B2 (ja) * | 2002-09-10 | 2005-11-09 | 株式会社東芝 | 無線通信機及びその制御方法 |
-
2004
- 2004-06-03 JP JP2004165938A patent/JP4323381B2/ja not_active Expired - Fee Related
-
2005
- 2005-01-25 CN CNA2005100028614A patent/CN1705258A/zh active Pending
- 2005-02-28 KR KR1020050016470A patent/KR101169357B1/ko not_active IP Right Cessation
- 2005-06-02 US US11/142,274 patent/US7400872B2/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014137108A1 (en) * | 2013-03-06 | 2014-09-12 | Samsung Electronics Co., Ltd. | Mobile device for power reduction and method thereof |
US10321404B2 (en) | 2013-03-06 | 2019-06-11 | Samsung Electronics Co., Ltd. | Mobile device for power reduction and method thereof |
US10863440B2 (en) | 2013-03-06 | 2020-12-08 | Samsung Electronics Co., Ltd. | Mobile device for power reduction and method thereof |
US11523344B2 (en) | 2013-03-06 | 2022-12-06 | Samsung Electronics Co., Ltd. | Mobile device for power reduction and method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2005348137A (ja) | 2005-12-15 |
KR20060043232A (ko) | 2006-05-15 |
US20050272384A1 (en) | 2005-12-08 |
KR101169357B1 (ko) | 2012-07-30 |
CN1705258A (zh) | 2005-12-07 |
US7400872B2 (en) | 2008-07-15 |
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