JP2011155694A - 送信方法および無線装置 - Google Patents
送信方法および無線装置 Download PDFInfo
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- 125000004122 cyclic group Chemical group 0.000 claims abstract description 6
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- 238000006243 chemical reaction Methods 0.000 description 4
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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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- 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
- H04B7/0413—MIMO systems
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- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0671—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
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Abstract
【解決手段】複数のアンテナ12は、複数のサブキャリアを使用したバースト信号であって、かつ通信のための制御情報が含まれたバースト信号をそれぞれ報知する。複数のアンテナ12のそれぞれに対応したタイムシフト量によって、複数のサブキャリアを使用した場合の時間領域での周期内における循環的なタイムシフトの実行がアンテナ単位に規定されており、制御部30は、当該規定にしたがいながら、複数のアンテナ12からそれぞれ報知されるバースト信号を生成する。制御部30は、複数のアンテナ12のそれぞれに対応したタイムシフト量を変化させながら、バースト信号を生成する。
【選択図】図4
Description
h0’=(h−1+2×h0+h1)/4、h1’=(h0+2×h1+h2)/4等として、雑音の影響を減らすことである。
Claims (2)
- CDD(Cyclic Delay Diversity)が適用された複数系列のパケット信号であって、かつ制御信号の後段にデータが配置されたパケット信号を生成する生成部と、
前記生成部において生成したパケット信号を複数のアンテナから送信する送信部とを備え、
前記生成部は、複数のアンテナから送信されるパケット信号における遅延環境が小さくなれば、サブキャリア間の伝搬路係数の平滑化処理の許可を示した情報を制御信号に含め、複数のアンテナから送信されるパケット信号における遅延環境が大きくなれば、サブキャリア間の伝搬路係数の平滑化処理の禁止を示した情報を制御信号に含めることを特徴とする無線装置。 - CDD(Cyclic Delay Diversity)が適用された複数系列のパケット信号であって、かつ制御信号の後段にデータが配置されたパケット信号を生成するステップと、
生成したパケット信号を複数のアンテナから送信するステップとを備え、
前記生成するステップは、複数のアンテナから送信されるパケット信号における遅延環境が小さくなれば、サブキャリア間の伝搬路係数の平滑化処理の許可を示した情報を制御信号に含め、複数のアンテナから送信されるパケット信号における遅延環境が大きくなれば、サブキャリア間の伝搬路係数の平滑化処理の禁止を示した情報を制御信号に含めることを特徴とする送信方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69498705P | 2005-06-30 | 2005-06-30 | |
US60/694,987 | 2005-06-30 |
Related Parent Applications (1)
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JP2006022170A Division JP4781116B2 (ja) | 2005-06-30 | 2006-01-31 | 無線装置 |
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JP2011155694A true JP2011155694A (ja) | 2011-08-11 |
JP5282119B2 JP5282119B2 (ja) | 2013-09-04 |
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JP2006022170A Active JP4781116B2 (ja) | 2005-06-30 | 2006-01-31 | 無線装置 |
JP2011099145A Active JP5282119B2 (ja) | 2005-06-30 | 2011-04-27 | 送信方法および無線装置 |
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JP2006022170A Active JP4781116B2 (ja) | 2005-06-30 | 2006-01-31 | 無線装置 |
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US (1) | US8737377B2 (ja) |
JP (2) | JP4781116B2 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US7738356B2 (en) * | 2005-06-28 | 2010-06-15 | Broadcom Corporation | Multiple stream cyclic-shifted delay transmitter |
JP4781116B2 (ja) * | 2005-06-30 | 2011-09-28 | 三洋電機株式会社 | 無線装置 |
CN101682384A (zh) * | 2007-05-31 | 2010-03-24 | 松下电器产业株式会社 | 无线通信移动台装置和循环延迟分集模式判定方法 |
US8798665B2 (en) * | 2007-11-15 | 2014-08-05 | Qualcomm Incorporated | Beacon-based control channels |
US9326253B2 (en) * | 2007-11-15 | 2016-04-26 | Qualcomm Incorporated | Wireless communication channel blanking |
US8761032B2 (en) | 2007-11-16 | 2014-06-24 | Qualcomm Incorporated | Random reuse based control channels |
US9009573B2 (en) * | 2008-02-01 | 2015-04-14 | Qualcomm Incorporated | Method and apparatus for facilitating concatenated codes for beacon channels |
US9107239B2 (en) | 2008-04-07 | 2015-08-11 | Qualcomm Incorporated | Systems and methods to define control channels using reserved resource blocks |
US8675537B2 (en) * | 2008-04-07 | 2014-03-18 | Qualcomm Incorporated | Method and apparatus for using MBSFN subframes to send unicast information |
JP5112353B2 (ja) * | 2009-01-29 | 2013-01-09 | 株式会社東芝 | 無線通信装置及び無線通信方法 |
US8189555B2 (en) * | 2009-02-06 | 2012-05-29 | Qualcomm Incorporated | Communications methods and apparatus for supporting communications with peers using multiple antenna patterns |
US8989308B2 (en) | 2009-02-27 | 2015-03-24 | Nokia Siemens Networks Oy | Apparatus and method for single user multiple input multiple output communication employing cyclic shifts |
EP3100543B1 (en) | 2014-02-25 | 2018-11-21 | MediaTek Inc. | Direction finding and ftm positioning in wireless local area networks |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4781116B2 (ja) * | 2005-06-30 | 2011-09-28 | 三洋電機株式会社 | 無線装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US5818829A (en) * | 1995-10-18 | 1998-10-06 | Telefonaktiebolaget Lm Ericsson | Method for increasing throughput capacity in a communication system |
FI113721B (fi) * | 1999-12-15 | 2004-05-31 | Nokia Corp | Menetelmä ja vastaanotin kanavaestimaatin iteratiiviseksi parantamiseksi |
US6842487B1 (en) * | 2000-09-22 | 2005-01-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Cyclic delay diversity for mitigating intersymbol interference in OFDM systems |
US7394873B2 (en) * | 2002-12-18 | 2008-07-01 | Intel Corporation | Adaptive channel estimation for orthogonal frequency division multiplexing systems or the like |
US7016319B2 (en) * | 2003-03-24 | 2006-03-21 | Motorola, Inc. | Method and apparatus for reducing co-channel interference in a communication system |
WO2005041441A1 (en) * | 2003-09-30 | 2005-05-06 | Ntt Docomo, Inc. | Apparatus and method for cyclic delay diversity |
US8432952B2 (en) * | 2003-11-24 | 2013-04-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for DS-CDMA interference suppression using code-specific combining |
EP1756991B1 (en) * | 2004-05-20 | 2016-09-28 | Intellectual Ventures I LLC | Cyclic diversity systems and methods |
JP2005341317A (ja) * | 2004-05-27 | 2005-12-08 | Toshiba Corp | 無線通信装置 |
US8089855B2 (en) * | 2004-06-04 | 2012-01-03 | Qualcomm Incorporated | Transmission of overhead information for broadcast and multicast services in a wireless communication system |
KR20050118031A (ko) * | 2004-06-12 | 2005-12-15 | 삼성전자주식회사 | 순환지연 다이버시티를 이용하여 방송 채널을 효율적으로전송하는 장치 및 방법 |
JP2006022170A (ja) | 2004-07-07 | 2006-01-26 | Mitsuo Miyasaka | ガスバリア性塗工剤 |
US9179319B2 (en) * | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
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2006
- 2006-01-31 JP JP2006022170A patent/JP4781116B2/ja active Active
- 2006-06-30 US US11/477,429 patent/US8737377B2/en active Active
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- 2011-04-27 JP JP2011099145A patent/JP5282119B2/ja active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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JP4781116B2 (ja) * | 2005-06-30 | 2011-09-28 | 三洋電機株式会社 | 無線装置 |
Also Published As
Publication number | Publication date |
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US8737377B2 (en) | 2014-05-27 |
US20070021075A1 (en) | 2007-01-25 |
JP4781116B2 (ja) | 2011-09-28 |
JP2007013920A (ja) | 2007-01-18 |
JP5282119B2 (ja) | 2013-09-04 |
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