JP2007013920A - 無線装置 - Google Patents
無線装置 Download PDFInfo
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- JP2007013920A JP2007013920A JP2006022170A JP2006022170A JP2007013920A JP 2007013920 A JP2007013920 A JP 2007013920A JP 2006022170 A JP2006022170 A JP 2006022170A JP 2006022170 A JP2006022170 A JP 2006022170A JP 2007013920 A JP2007013920 A JP 2007013920A
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- 238000012545 processing Methods 0.000 claims abstract description 64
- 238000009499 grossing Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 18
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 239000000969 carrier Substances 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 30
- 239000011159 matrix material Substances 0.000 description 17
- 230000003044 adaptive effect Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
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- 238000004590 computer program Methods 0.000 description 1
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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
Sinem Coleri,Mustafa Ergen,Anuj Puri, and Ahmad Bahai,"Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems",IEEE Transactions on broadcasting,vol.48,No.3,pp.223−229,Sept.2002.
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 (6)
- 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と、
前記複数のアンテナ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、当該規定にしたがいながら、前記複数のアンテナからそれぞれ報知されるバースト信号を生成する生成部とを備え、
前記生成部は、複数のアンテナ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ことを特徴とする無線装置。 - 前記生成部は、所定のタイムシフト量と、前記所定のタイムシフト量よりも長いタイムシフト量とをバースト信号を単位に切りかえながら、バースト信号を生成することを特徴とする請求項1に記載の無線装置。
- 前記生成部において生成されるバースト信号は、固定的なタイムシフト量によってタイムシフトが実行される部分を含み、当該部分の後段に、タイムシフト量を切りかえながらタイムシフトが実行される部分を含むことを特徴とする請求項2に記載の無線装置。
- 前記生成部は、所定のタイムシフト量によってバースト信号を生成している場合に、バースト信号のうち、固定的なタイムシフト量によってタイムシフトが実行される部分に、受信の際のサブキャリア間の処理の許可を示した情報を含めることを特徴とする請求項3に記載に無線装置。
- 前記生成部は、前記所定のタイムシフト量よりも長いタイムシフト量によってバースト信号を生成している場合に、固定的なタイムシフト量によってタイムシフトが実行される部分に、受信の際のサブキャリア間の処理の禁止を示した情報を含めることを特徴とする請求項3に記載に無線装置。
- 前記生成部は、平滑化処理の許可あるいは禁止が示された情報をバースト信号に含めることを特徴とする請求項1から5のいずれかに記載の無線装置。
Applications Claiming Priority (2)
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US69498705P | 2005-06-30 | 2005-06-30 | |
US60/694,987 | 2005-06-30 |
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JP2011099145A Division JP5282119B2 (ja) | 2005-06-30 | 2011-04-27 | 送信方法および無線装置 |
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JP2007013920A true JP2007013920A (ja) | 2007-01-18 |
JP4781116B2 JP4781116B2 (ja) | 2011-09-28 |
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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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JP (2) | JP4781116B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012517740A (ja) * | 2009-02-06 | 2012-08-02 | クゥアルコム・インコーポレイテッド | 複数のアンテナ・パターンを使用して複数のピアとの通信をサポートするための通信方法及び装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO2008149533A1 (ja) * | 2007-05-31 | 2008-12-11 | Panasonic Corporation | 無線通信移動局装置およびcddモード判定方法 |
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 |
US8675537B2 (en) * | 2008-04-07 | 2014-03-18 | Qualcomm Incorporated | Method and apparatus for using MBSFN subframes to send unicast information |
US9107239B2 (en) | 2008-04-07 | 2015-08-11 | Qualcomm Incorporated | Systems and methods to define control channels using reserved resource blocks |
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 |
BRPI0924749B1 (pt) * | 2009-02-27 | 2020-12-01 | Nokia Solutions And Networks Oy | aparelho e método para comunicação de múltipla entrada múltipla saída de usuário individual empregando desvios cíclicos |
WO2015130712A1 (en) | 2014-02-25 | 2015-09-03 | Mediatek Inc. | Direction finding and ftm positioning in wireless local area networks |
Citations (3)
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JP2004509556A (ja) * | 2000-09-22 | 2004-03-25 | テレフオンアクチーボラゲツト エル エム エリクソン(パブル) | Ofdmシステムにおけるisi緩和のための周期遅延ダイバーシティ |
WO2005041441A1 (en) * | 2003-09-30 | 2005-05-06 | Ntt Docomo, Inc. | Apparatus and method for cyclic delay diversity |
JP2005341317A (ja) * | 2004-05-27 | 2005-12-08 | Toshiba Corp | 無線通信装置 |
Family Cites Families (11)
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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 |
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 |
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 |
US7920884B2 (en) * | 2004-06-04 | 2011-04-05 | Qualcomm Incorporated | Frame structures for a wireless communication system with multiple radio technologies |
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 |
JP4781116B2 (ja) * | 2005-06-30 | 2011-09-28 | 三洋電機株式会社 | 無線装置 |
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- 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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Patent Citations (3)
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JP2004509556A (ja) * | 2000-09-22 | 2004-03-25 | テレフオンアクチーボラゲツト エル エム エリクソン(パブル) | Ofdmシステムにおけるisi緩和のための周期遅延ダイバーシティ |
WO2005041441A1 (en) * | 2003-09-30 | 2005-05-06 | Ntt Docomo, Inc. | Apparatus and method for cyclic delay diversity |
JP2005341317A (ja) * | 2004-05-27 | 2005-12-08 | Toshiba Corp | 無線通信装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012517740A (ja) * | 2009-02-06 | 2012-08-02 | クゥアルコム・インコーポレイテッド | 複数のアンテナ・パターンを使用して複数のピアとの通信をサポートするための通信方法及び装置 |
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US20070021075A1 (en) | 2007-01-25 |
JP4781116B2 (ja) | 2011-09-28 |
JP5282119B2 (ja) | 2013-09-04 |
JP2011155694A (ja) | 2011-08-11 |
US8737377B2 (en) | 2014-05-27 |
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