JP5259697B2 - 信号変調方法 - Google Patents
信号変調方法 Download PDFInfo
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- JP5259697B2 JP5259697B2 JP2010507778A JP2010507778A JP5259697B2 JP 5259697 B2 JP5259697 B2 JP 5259697B2 JP 2010507778 A JP2010507778 A JP 2010507778A JP 2010507778 A JP2010507778 A JP 2010507778A JP 5259697 B2 JP5259697 B2 JP 5259697B2
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- signal
- spreading
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- qpsk
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/2615—Reduction thereof using coding
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
ステップ1:チャンネル・コーディングに用いられる第1のユニットが入力された信号に対しチャンネル・コーディングを行う。その中、チャンネル・コーディングは1/5或は1/3のTurboコーディングである。
S202:第4のユニットの中の保護間隔とパイロット周波数を挿入するモジュールは受信したI、Q信号ペアを接続されたQPSK周波数拡散モジュールに出力する。
S202:第4のユニットにおける保護間隔とパイロット周波数を挿入するモジュールは、受信したI、Q信号ペアであるC"I/Q[i][k]を接続されたQPSK周波数拡散モジュールに出力する。
Claims (7)
- 入力信号に対しチャンネル・コーディングを行い、チャンネル・コーディングされた信号に対して、チャンネル・スクランブリング、インターリービング、重複、スロッティングにおける一つ又は複数の処理を行うステップと、
処理後の信号を、一つの信号ペアを構成するI、Qの二部分に分けるステップと、
前記信号ペアを1ウェイ以上に分け、各ウェイの信号に対しそれぞれ異なる周波数拡散シーケンスを採用し4位相偏移変調周波数拡散(QPSK Spreading)を行うと共に、直交変調を行って、直交変調が行われた各ウェイの信号のピーク対平均電力比を獲得するステップと、
ピーク対平均電力比が最小の1ウェイ信号を出力信号として出力するステップと、を含み、
前記周波数拡散シーケンスは、式h(D)=D 17 +D 14 +1に従って生成され、
前記信号ペアがMウェイに分けられ、且つ、前記周波数拡散シーケンスがs[k]、k=0,…,8NFFT[i]-1である時、前記Mウェイ信号のそれぞれに用いられる周波数拡散シーケンスは
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007101085098A CN101136888B (zh) | 2007-05-18 | 2007-05-18 | 一种降低信号峰均功率比的调制方法 |
CN200710108509.8 | 2007-05-18 | ||
PCT/CN2007/003263 WO2008141498A1 (fr) | 2007-05-18 | 2007-11-19 | Procédé de modulation de signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010527546A JP2010527546A (ja) | 2010-08-12 |
JP5259697B2 true JP5259697B2 (ja) | 2013-08-07 |
Family
ID=39160722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010507778A Expired - Fee Related JP5259697B2 (ja) | 2007-05-18 | 2007-11-19 | 信号変調方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8416837B2 (ja) |
JP (1) | JP5259697B2 (ja) |
CN (1) | CN101136888B (ja) |
CA (1) | CA2687293C (ja) |
WO (1) | WO2008141498A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8670390B2 (en) | 2000-11-22 | 2014-03-11 | Genghiscomm Holdings, LLC | Cooperative beam-forming in wireless networks |
US9819449B2 (en) | 2002-05-14 | 2017-11-14 | Genghiscomm Holdings, LLC | Cooperative subspace demultiplexing in content delivery networks |
US10931338B2 (en) | 2001-04-26 | 2021-02-23 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US10355720B2 (en) | 2001-04-26 | 2019-07-16 | Genghiscomm Holdings, LLC | Distributed software-defined radio |
US9628231B2 (en) | 2002-05-14 | 2017-04-18 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US10142082B1 (en) | 2002-05-14 | 2018-11-27 | Genghiscomm Holdings, LLC | Pre-coding in OFDM |
US10200227B2 (en) | 2002-05-14 | 2019-02-05 | Genghiscomm Holdings, LLC | Pre-coding in multi-user MIMO |
US10644916B1 (en) | 2002-05-14 | 2020-05-05 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US11552737B1 (en) | 2004-08-02 | 2023-01-10 | Genghiscomm Holdings, LLC | Cooperative MIMO |
US11184037B1 (en) | 2004-08-02 | 2021-11-23 | Genghiscomm Holdings, LLC | Demodulating and decoding carrier interferometry signals |
US11381285B1 (en) | 2004-08-02 | 2022-07-05 | Genghiscomm Holdings, LLC | Transmit pre-coding |
CN107949991B (zh) | 2015-09-02 | 2020-10-27 | 华为技术有限公司 | 一种信号发送或接收方法和设备 |
US10637705B1 (en) | 2017-05-25 | 2020-04-28 | Genghiscomm Holdings, LLC | Peak-to-average-power reduction for OFDM multiple access |
US10243773B1 (en) | 2017-06-30 | 2019-03-26 | Genghiscomm Holdings, LLC | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
EP3915236A4 (en) | 2019-01-25 | 2023-05-24 | Genghiscomm Holdings, LLC | ORTHOGONAL MULTI-ACCESS AND NON-ORTHOGONAL MULTI-ACCESS |
US11917604B2 (en) | 2019-01-25 | 2024-02-27 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
US11343823B2 (en) | 2020-08-16 | 2022-05-24 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
WO2020242898A1 (en) | 2019-05-26 | 2020-12-03 | Genghiscomm Holdings, LLC | Non-orthogonal multiple access |
CN115276892A (zh) * | 2021-04-30 | 2022-11-01 | 上海华为技术有限公司 | 一种信号生成方法、一种信号处理方法以及相关设备 |
Family Cites Families (13)
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KR100269593B1 (ko) | 1997-12-02 | 2000-10-16 | 정선종 | 다중 채널을 위한 직교 복소 확산 방법 및 그 장치 |
JPH11215091A (ja) | 1998-01-22 | 1999-08-06 | Toshiba Corp | Ofdm信号伝送方法及びofdm信号伝送装置 |
KR20000073917A (ko) * | 1999-05-15 | 2000-12-05 | 윤종용 | 비동기식 부호분할다중접속 통신시스템의 동기워드 생성 및 송수신장치 및 방법 |
KR100754721B1 (ko) * | 2002-04-26 | 2007-09-03 | 삼성전자주식회사 | 직교주파수분할다중화 통신시스템에서 다중화 데이터 송수신 장치 및 방법 |
KR20040005175A (ko) * | 2002-07-08 | 2004-01-16 | 삼성전자주식회사 | 직교주파수분할다중화 통신시스템에서 선택적매핑의부가정보 송수신 장치 및 방법 |
KR100933115B1 (ko) * | 2003-09-09 | 2009-12-21 | 삼성전자주식회사 | 직교 주파수 분할 다중 통신 시스템에서 피크 전력 대 평균 전력비의 감소를 위한 장치 및 방법 |
JP4077398B2 (ja) * | 2003-11-25 | 2008-04-16 | 日本電信電話株式会社 | 無線通信システム、無線通信方法、および送信機 |
US7362790B2 (en) * | 2004-05-07 | 2008-04-22 | Samsung Electronics Co., Ltd. | Apparatus and method for generating pseudo-replica signals in a CDMA communication system |
JP4153906B2 (ja) | 2004-07-09 | 2008-09-24 | 株式会社東芝 | 通信装置、送信方法及び受信方法 |
KR100666689B1 (ko) | 2004-09-24 | 2007-01-09 | 유흥균 | 위상 회전과 선택적 매핑 방식을 이용한 실시간 피크대평균전력 감소 방법 및 이를 이용하는 데이터 송신 시스템 |
CN100568867C (zh) * | 2005-08-12 | 2009-12-09 | 中兴通讯股份有限公司 | 一种多载波调制系统中降低峰均比的方法 |
JP4637061B2 (ja) * | 2006-06-28 | 2011-02-23 | 富士通株式会社 | 無線送信装置及びガードインターバル挿入方法 |
EP2082550B1 (en) * | 2006-11-13 | 2013-01-23 | Telefonaktiebolaget LM Ericsson (publ) | A method for limiting local bandwidth impairment using tone reservation |
-
2007
- 2007-05-18 CN CN2007101085098A patent/CN101136888B/zh not_active Expired - Fee Related
- 2007-11-19 US US12/600,254 patent/US8416837B2/en not_active Expired - Fee Related
- 2007-11-19 WO PCT/CN2007/003263 patent/WO2008141498A1/zh active Application Filing
- 2007-11-19 JP JP2010507778A patent/JP5259697B2/ja not_active Expired - Fee Related
- 2007-11-19 CA CA2687293A patent/CA2687293C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2008141498A1 (fr) | 2008-11-27 |
JP2010527546A (ja) | 2010-08-12 |
CN101136888A (zh) | 2008-03-05 |
US20100303126A1 (en) | 2010-12-02 |
CA2687293C (en) | 2015-08-11 |
CA2687293A1 (en) | 2008-11-27 |
CN101136888B (zh) | 2011-09-21 |
US8416837B2 (en) | 2013-04-09 |
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