JP4611864B2 - 伝送方式 - Google Patents
伝送方式 Download PDFInfo
- Publication number
- JP4611864B2 JP4611864B2 JP2005314152A JP2005314152A JP4611864B2 JP 4611864 B2 JP4611864 B2 JP 4611864B2 JP 2005314152 A JP2005314152 A JP 2005314152A JP 2005314152 A JP2005314152 A JP 2005314152A JP 4611864 B2 JP4611864 B2 JP 4611864B2
- Authority
- JP
- Japan
- Prior art keywords
- rotation angle
- modulation
- rotation
- orthogonal code
- code
- 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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Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
- H04J13/12—Generation of orthogonal codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/004—Orthogonal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
- H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
- H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
3GPP TSG RAN WG1#42 bis, R1-051261, "Enhancement of Distributed Mode for Maximizing Frequency Diversity," Oct. 2005. D. Garg and F. Adachi, "Diversity-Coding-Orthogonality Trade-off for Coded MC-CDMA with High Level Modulation," IEICE Trans. Commun., Vol. E88-B, No. 1, pp. 76-83, Jan. 2005.
本発明の回転直交符号を用いて信号を拡散する伝送方式の送受信ブロックダイアグラムの一例を図1に示す。図1において、送信機1から受信機3へ情報ビットを送信する際には、まず、送信機1の符号化器11が情報ビットを入力して符号化を行い、続いて符号化後の情報ビットを変調器12で変調を行い、変調シンボルを生成する。
2 … 伝送路
3 … 受信機
11 … 符号化器
12 … 変調器
13 … 拡散器
31 … 逆拡散器
32 … 復調器
33 … 復号器
Claims (2)
- 回転直交符号を用いて信号を拡散する伝送方式であって、誤り訂正符号の符号化率が4/5のQPSK変調において、OFDMと同一の信号点となる回転角を0度としたときに、18から45度の間、もしくは、−18から−45度の間の回転角を持つ回転直交符号を用いることを特徴とする伝送方式。
- 回転直交符号を用いて信号を拡散する伝送方式であって、誤り訂正符号の符号化率が3/4の16QAM変調において、OFDMと同一の信号点となる回転角を0度としたときに、12から42度の間、もしくは、−12から−42度の間の回転角を持つ回転直交符号を用いることを特徴とする伝送方式。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005314152A JP4611864B2 (ja) | 2005-10-28 | 2005-10-28 | 伝送方式 |
PCT/JP2006/321378 WO2007049700A1 (ja) | 2005-10-28 | 2006-10-26 | 伝送方式 |
US12/148,084 US20080225927A1 (en) | 2005-10-28 | 2008-04-15 | Transmission method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005314152A JP4611864B2 (ja) | 2005-10-28 | 2005-10-28 | 伝送方式 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010183998A Division JP5220816B2 (ja) | 2010-08-19 | 2010-08-19 | 伝送方式 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007124301A JP2007124301A (ja) | 2007-05-17 |
JP4611864B2 true JP4611864B2 (ja) | 2011-01-12 |
Family
ID=37967810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005314152A Expired - Fee Related JP4611864B2 (ja) | 2005-10-28 | 2005-10-28 | 伝送方式 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080225927A1 (ja) |
JP (1) | JP4611864B2 (ja) |
WO (1) | WO2007049700A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010268522A (ja) * | 2010-08-19 | 2010-11-25 | Kddi Corp | 伝送方式 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2288048A1 (en) * | 2009-08-21 | 2011-02-23 | Panasonic Corporation | Rotated multi-dimensional constellations for improved diversity in fading channels |
US10020839B2 (en) * | 2016-11-14 | 2018-07-10 | Rampart Communications, LLC | Reliable orthogonal spreading codes in wireless communications |
US10965352B1 (en) | 2019-09-24 | 2021-03-30 | Rampart Communications, Inc. | Communication system and methods using very large multiple-in multiple-out (MIMO) antenna systems with extremely large class of fast unitary transformations |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004023727A (ja) * | 2002-06-20 | 2004-01-22 | Matsushita Electric Ind Co Ltd | 信号処理装置及び信号処理方法 |
JP2005522061A (ja) * | 2001-08-31 | 2005-07-21 | ブロードバンド フィシクス,インコーポレイテッド | モデム受信器の非線形歪み補償 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0452895B1 (en) * | 1990-04-18 | 1996-07-03 | Canon Kabushiki Kaisha | Optical communication network system and communication method using the same |
CA2331203C (en) * | 1992-03-26 | 2004-12-07 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5995539A (en) * | 1993-03-17 | 1999-11-30 | Miller; William J. | Method and apparatus for signal transmission and reception |
US5367516A (en) * | 1993-03-17 | 1994-11-22 | Miller William J | Method and apparatus for signal transmission and reception |
US5721694A (en) * | 1994-05-10 | 1998-02-24 | Aura System, Inc. | Non-linear deterministic stochastic filtering method and system |
JPH08190764A (ja) * | 1995-01-05 | 1996-07-23 | Sony Corp | ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体 |
KR100304697B1 (ko) * | 1998-11-19 | 2001-09-24 | 윤종용 | 주파수 복조 장치 및 방법 |
US20020191566A1 (en) * | 2001-06-07 | 2002-12-19 | Eliezer Fogel | Method of cellular communication |
US7564915B2 (en) * | 2004-06-16 | 2009-07-21 | Samsung Electronics Co., Ltd. | Apparatus and method for coding/decoding pseudo orthogonal space-time block code in a mobile communication system using multiple input multiple output scheme |
-
2005
- 2005-10-28 JP JP2005314152A patent/JP4611864B2/ja not_active Expired - Fee Related
-
2006
- 2006-10-26 WO PCT/JP2006/321378 patent/WO2007049700A1/ja active Application Filing
-
2008
- 2008-04-15 US US12/148,084 patent/US20080225927A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005522061A (ja) * | 2001-08-31 | 2005-07-21 | ブロードバンド フィシクス,インコーポレイテッド | モデム受信器の非線形歪み補償 |
JP2004023727A (ja) * | 2002-06-20 | 2004-01-22 | Matsushita Electric Ind Co Ltd | 信号処理装置及び信号処理方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010268522A (ja) * | 2010-08-19 | 2010-11-25 | Kddi Corp | 伝送方式 |
Also Published As
Publication number | Publication date |
---|---|
JP2007124301A (ja) | 2007-05-17 |
US20080225927A1 (en) | 2008-09-18 |
WO2007049700A1 (ja) | 2007-05-03 |
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