JP2004007842A - ディジタル無線通信装置 - Google Patents
ディジタル無線通信装置 Download PDFInfo
- Publication number
- JP2004007842A JP2004007842A JP2003311745A JP2003311745A JP2004007842A JP 2004007842 A JP2004007842 A JP 2004007842A JP 2003311745 A JP2003311745 A JP 2003311745A JP 2003311745 A JP2003311745 A JP 2003311745A JP 2004007842 A JP2004007842 A JP 2004007842A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signal vector
- time
- preprocessing
- dimensional
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0656—Cyclotomic systems, e.g. Bell Labs Layered Space-Time [BLAST]
-
- 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
- H04B7/0669—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 channel coding between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0631—Receiver arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
-
- 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
- H04B7/0837—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 pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Noise Elimination (AREA)
Abstract
【解決手段】 受信装置50が、複数の送信アンテナ素子を有する送信装置によって送信された信号を信号ベクトルとして受信する複数のアンテナ素子55−1〜55−nと、信号前処理器60と、復号器65とからなる。前処理器60が、信号ベクトルを前処理する。前処理は、前に受信され前処理器60によって前処理された信号ベクトルの復号化から得られる復号化結果を、現に処理中の信号ベクトルから差し引くこと、及び現に処理中の信号ベクトルの後に受信された処理されていない信号ベクトルの要素を現に処理中の信号ベクトルからゼロ化すること、によって行われる。復号器65が、信号ベクトルの前処理から得られた結果を復号化する。
【選択図】 図2
Description
(ビットレート)は、周知の、情報理論に関するシャノンの手法(一般に、シャノンの定理又はシャノンの符号化限界定理として知られる)を用いて導出される。最終ビットレートは(a)送信装置における全輻射電力、(b)個々の通信現場(サイト)、帯域幅におけるアンテナの個数、(c)受信装置における雑音電力、(d)伝搬環境の特性、等からなるいくつもの異なるパラメータに基づく。
r=g*s+v (1)
ここに、* は畳み込みを意味する。これら3個のベクトル、g、s、及びvは複素NR 次元のベクトル(すなわち2NR 実次元)である。
C=log2det[InR+(ρ/nT)×HH&]bps/Hz (4)
ここに、detは確定値を、InRは(nR×nT)の恒等行列を、そして&は転置共役を、それぞれ意味する。
「ERROR」=「ERRORnonsupp」∪「ERRORsupp」
20 デマルチプレクサ(多重情報分離器)
25 送信装置
30−1〜30−N 変調/符号器
31−1〜31−N パス
40 転換器
45−1〜45−N 送信アンテナ
50 受信装置
55−1〜55−N 受信アンテナ
56−1〜56−6 垂直方向セグメント
57−1〜57−m セグメント
60 前処理器
61 メモリ
65 復号器
70 マルチプレクサ(多重化器)
Claims (12)
- 複数のアンテナの各々が、一連の複素信号をそれぞれの時間長さτの間に受信し、該複素信号の各々が、無作為に重畳されたn個(n>1)の別個の信号成分からなり、全ての該受信アンテナによって該時間長さのうちの1個の時間長さの或る特定のセグメントの間に受信された全ての該信号成分が集合的に信号ベクトルを形成するような、複数のアンテナと、
前期時間長さの間に受信された前記信号成分を、それぞれの送信アンテナ素子に連関するような空間と、及び時間との間に特定の空間・時間関係を有するように形成するための手段と、
空間・時間の斜線に沿ったそれぞれのグループ内に配置された前記信号ベクトルを前処理するための手段であって、該前処理が、前処理中の信号ベクトルのグループと同じ時間長さτの間に受信された前記一連の信号ベクトルへの復号化されなかった寄与分をゼロ化することと、同じ一連の信号ベクトルに対する復号化された寄与分を差し引くこととによって行われ、これらの信号ベクトルのグループが前記時間長さのうちのそれぞれの時間長さと前記送信アンテナ素子のうちのそれぞれの送信アンテナ素子とに連関するような、前記信号ベクトルを前処理するための手段と、
からなることを特徴とする、ディジタル無線受信装置。 - 複数のアンテナの各々が、一連の複素信号をそれぞれの時間長さτの間に受信し、該複素信号の各々が、無作為に重畳されたn個(n>1)の別個の信号成分からなり、全ての該受信アンテナによって該時間長さのうちの1個の時間長さの或る特定のセグメントの間に受信された全ての該信号成分が集合的に信号ベクトルを形成するような、複数のアンテナと、
前期時間長さの間に受信された前記信号成分を、それぞれの送信アンテナ素子に連関するような空間と、時間との間に特定の空間・時間関係を有するように形成するための手段と、
空間・時間の斜線に沿って設置されたそれぞれのグループ内の前記信号ベクトルを前処理するための手段であって、該前処理が、前処理中の信号ベクトルの信号対雑音比を最大化することと、同じ一連の信号ベクトルへの復号化された寄与分を差し引くこととによって行われ、これらの信号ベクトルのグループが前記時間長さのうちのそれぞれの時間長さと前記送信アンテナ素子のうちのそれぞれの送信アンテナ素子とに連関するような、前記信号ベクトルを前処理するための手段と、
からなることを特徴とする、ディジタル無線受信装置。 - 受信回路であって、
該受信回路が、
n個(n>1)の送信アンテナ素子を有する送信装置によって送信された信号をそれぞれのn次元(n>1)の信号ベクトルとして受信するための複数のアンテナ素子と、
メモリと、
前処理回路と、
からなり、
該前処理回路が、
(a)前記n次元の信号ベクトルのうちの、或る特定の時間長さの間に受信され且つ前記送信アンテナ素子のうちの或る特定の送信アンテナ素子に連関する、n次元の信号ベクトルを、前記メモリからアンロードし、(b)アンロードされた前記1つのn次元の信号ベクトルから、前記送信アンテナ素子のうちの該或る特定の送信アンテナ素子以外の送信アンテナ素子と該特定の時間長さとに連関する前記n次元の信号ベクトルを前処理した結果として得られる検出されなかった記号を差し引き、(c)アンロードされた前記1つのn次元の信号ベクトルから、まだ処理されていない前記n次元の信号ベクトルに連関する記号をゼロ化する、ように作動し、
該前処理回路が、
もし現に処理中の前記n次元の信号ベクトルを含むn次元の信号ベクトルの層の前記前処理が完了している場合に前記前処理の結果を出力するための、且つ該層に含まれる次のn次元の信号ベクトルを前処理するために前記メモリからアンロードするための手段からなる、
ことを特徴とする、受信回路。 - 受信回路であって、
該受信回路が、
複数の送信アンテナ素子を有する送信装置によって送信された信号をそれぞれの信号ベクトルとして受信するための複数のアンテナ素子と、
信号前処理回路と、
復号化回路とからなり、
前記信号前処理回路が、
前に受信され前記信号前処理回路によって処理された前記信号ベクトルの復号化から得られる復号化結果を、現に処理中の信号ベクトルから差し引き、且つ現に処理中の信号ベクトルの後に受信された処理されていない信号ベクトルの要素を現に処理中の信号ベクトルからゼロ化する、ために個々の前記信号ベクトルを処理するように作動し、
それから、前記復号化回路が、
前記信号ベクトルの前処理から得られた結果を復号化するように作動する、
ことを特徴とする、受信回路。 - 個々の前記信号ベクトルが、n次元の複素信号ベクトルであり、nが前記送信アンテナ素子の個数に等しい、ことを特徴とする請求項4の受信回路。
- 前記信号前処理回路が、予め定められた時間長さの間に受信された各信号ベクトルをn倍に複製して該複製された結果を前記送信アンテナ素子に応じて時間及び空間に配列するための、そして前記送信アンテナ素子のうちのそれぞれの送信アンテナ素子に連関し且つ前記時間長さのうちのその特定の時間長さの間に受信されたn次元の信号ベクトルに連関する複製された結果の斜層を前処理するように提供するための手段を有する、ことを特徴とする請求項5の受信回路。
- 前記斜層の前処理が、前記斜層に沿っての最前の時間点に受信された或る1個のn次元の信号ベクトルの前処理で始まり、前記斜層に沿っての最後の時間点に受信された或る1個のn次元の信号ベクトルの前処理で終わる、ことを特徴とする請求項6の受信回路。
- 前記前処理が、現に処理中の前記斜層に沿っての最後の時間点に受信された前記或る1個のn次元の信号ベクトルの前処理に続いて、次に続く斜層において継続される、ことを特徴とする請求項7の受信回路。
- 前記受信回路が更に、前記復号化回路によって出力された信号を多重化するための多重化回路からなることを特徴とする、請求項4の受信回路。
- 受信回路であって、
該受信回路が、
n個(n>1)の送信アンテナ素子を有する送信装置によって送信された信号をそれぞれのn次元(n>1)の信号ベクトルとして受信するための複数のアンテナ素子と、
信号前処理回路と、
復号化回路とからなり、
前記信号前処理回路が、
前に受信され前記信号前処理回路によって処理された前記n次元の信号ベクトルの復号化から得られる復号化結果を、現に処理中のn次元の信号ベクトルから差し引き、且つ前処理中のn次元の信号ベクトルの信号対雑音比を最大化する、ために個々の前記n次元の信号ベクトルを処理するように作動し、
それから、前記復号化回路が、
前記信号前処理回路による前記n次元の信号ベクトル各々の前処理から得られた結果を復号化するように作動する、
ことを特徴とする、受信回路。 - 送信装置であって、
該送信装置が、
複数のアンテナ素子と、
転換器と、
複数の変調/符号化回路と、
データ源から受信されたデータストリームを複数のデータ・サブストリームに多重化するための、且つ該サブストリームを前記変調/符号化回路のうちのそれぞれの変調/符号化回路に供給するための、多重化器と、
からなり、
前記変調/符号化回路の各々が、その前記変調/符号化回路によって前記サブストリームのうちの対応する1個のサブストリームを介して受信されたデータを符号化するとともに該符号化されたデータを前記転換器に供給し、
前記変調/符号化回路のうちの或る1個の変調/符号化回路から受信された前記符号化されたデータを、前記複数のアンテナ素子のうちの連関するアンテナ素子を介して送信するために、前記転換器が、前記変調/符号化回路の各々を前記複数のアンテナ素子の各々に連関付ける、
ことを特徴とする、送信装置。 - 前記連関付けが、予め定められた時間長さの間存在することを特徴とする請求項11の装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/673,981 US6097771A (en) | 1996-07-01 | 1996-07-01 | Wireless communications system having a layered space-time architecture employing multi-element antennas |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9176070A Division JPH1084324A (ja) | 1996-07-01 | 1997-07-01 | ディジタル無線通信装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007239813A Division JP4272681B2 (ja) | 1996-07-01 | 2007-09-14 | ディジタル無線通信装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004007842A true JP2004007842A (ja) | 2004-01-08 |
JP2004007842A5 JP2004007842A5 (ja) | 2005-05-26 |
JP4044500B2 JP4044500B2 (ja) | 2008-02-06 |
Family
ID=24704865
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9176070A Pending JPH1084324A (ja) | 1996-07-01 | 1997-07-01 | ディジタル無線通信装置 |
JP2003311745A Expired - Fee Related JP4044500B2 (ja) | 1996-07-01 | 2003-09-03 | ディジタル無線通信装置 |
JP2007239813A Expired - Fee Related JP4272681B2 (ja) | 1996-07-01 | 2007-09-14 | ディジタル無線通信装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9176070A Pending JPH1084324A (ja) | 1996-07-01 | 1997-07-01 | ディジタル無線通信装置 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007239813A Expired - Fee Related JP4272681B2 (ja) | 1996-07-01 | 2007-09-14 | ディジタル無線通信装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6097771A (ja) |
EP (1) | EP0817401B1 (ja) |
JP (3) | JPH1084324A (ja) |
KR (1) | KR100626099B1 (ja) |
DE (1) | DE69736504T2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008503902A (ja) * | 2004-06-21 | 2008-02-07 | ミツビシ・エレクトリック・リサーチ・ラボラトリーズ・インコーポレイテッド | 多入力多出力通信システムにおいて送信される層に対しデータレートを割り当てる方法 |
Families Citing this family (121)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2302289C (en) * | 1996-08-29 | 2005-11-08 | Gregory G. Raleigh | Spatio-temporal processing for communication |
US6185258B1 (en) * | 1997-09-16 | 2001-02-06 | At&T Wireless Services Inc. | Transmitter diversity technique for wireless communications |
CA2276207C (en) | 1997-10-31 | 2003-02-18 | At&T Wireless Services, Inc. | Low complexity maximum likelihood detection of concatenated space codes for wireless applications |
US6088408A (en) * | 1998-11-06 | 2000-07-11 | At & T Corp. | Decoding for generalized orthogonal designs for space-time codes for wireless communication |
US6188736B1 (en) | 1997-12-23 | 2001-02-13 | At&T Wireless Svcs. Inc. | Near-optimal low-complexity decoding of space-time codes for fixed wireless applications |
US6317466B1 (en) * | 1998-04-15 | 2001-11-13 | Lucent Technologies Inc. | Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver |
US6327310B1 (en) * | 1998-08-14 | 2001-12-04 | Lucent Technologies Inc. | Wireless transmission method for antenna arrays, having improved resistance to fading |
US6459740B1 (en) | 1998-09-17 | 2002-10-01 | At&T Wireless Services, Inc. | Maximum ratio transmission |
EP1131892B1 (en) | 1998-11-13 | 2006-08-02 | Bitwave Private Limited | Signal processing apparatus and method |
US6128330A (en) | 1998-11-24 | 2000-10-03 | Linex Technology, Inc. | Efficient shadow reduction antenna system for spread spectrum |
US6363121B1 (en) * | 1998-12-07 | 2002-03-26 | Lucent Technologies Inc. | Wireless transmission method for antenna arrays using unitary space-time signals |
US7952511B1 (en) | 1999-04-07 | 2011-05-31 | Geer James L | Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns |
AU5745700A (en) * | 1999-06-28 | 2001-01-31 | Lucent Technologies Inc. | High-speed data services using multiple transmit antennas |
US20020150070A1 (en) * | 1999-07-02 | 2002-10-17 | Shattil Steve J. | Method and apparatus for using frequency diversity to separate wireless communication signals |
US6724842B1 (en) * | 1999-07-16 | 2004-04-20 | Lucent Technologies Inc. | Method for wireless differential communication using multiple transmitter antennas |
US6757265B1 (en) | 1999-07-30 | 2004-06-29 | Iospan Wireless, Inc. | Subscriber unit in a hybrid link incorporating spatial multiplexing |
EP1198963B1 (en) | 1999-07-30 | 2008-06-25 | Iospan Wireless, Inc. | Spatial multiplexing in a cellular network |
US6067290A (en) * | 1999-07-30 | 2000-05-23 | Gigabit Wireless, Inc. | Spatial multiplexing in a cellular network |
US6317098B1 (en) * | 1999-08-23 | 2001-11-13 | Lucent Technologies Inc. | Communication employing triply-polarized transmissions |
US6298092B1 (en) | 1999-12-15 | 2001-10-02 | Iospan Wireless, Inc. | Methods of controlling communication parameters of wireless systems |
US6351499B1 (en) | 1999-12-15 | 2002-02-26 | Iospan Wireless, Inc. | Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter |
US6922445B1 (en) * | 1999-12-15 | 2005-07-26 | Intel Corporation | Method and system for mode adaptation in wireless communication |
US6975666B2 (en) | 1999-12-23 | 2005-12-13 | Institut National De La Recherche Scientifique | Interference suppression in CDMA systems |
US7477703B2 (en) * | 2000-02-22 | 2009-01-13 | Nokia Mobile Phones, Limited | Method and radio system for digital signal transmission using complex space-time codes |
US6865237B1 (en) | 2000-02-22 | 2005-03-08 | Nokia Mobile Phones Limited | Method and system for digital signal transmission |
US6542556B1 (en) | 2000-03-31 | 2003-04-01 | Nokia Mobile Phones Ltd. | Space-time code for multiple antenna transmission |
US7209745B1 (en) | 2000-06-09 | 2007-04-24 | Intel Corporation | Cellular wireless re-use structure that allows spatial multiplexing and diversity communication |
US8363744B2 (en) | 2001-06-10 | 2013-01-29 | Aloft Media, Llc | Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks |
US6963619B1 (en) | 2000-07-21 | 2005-11-08 | Intel Corporation | Spatial separation and multi-polarization of antennae in a wireless network |
US6937592B1 (en) | 2000-09-01 | 2005-08-30 | Intel Corporation | Wireless communications system that supports multiple modes of operation |
US6400699B1 (en) | 2000-09-12 | 2002-06-04 | Iospan Wireless, Inc. | Transmission scheduler for a multiple antenna wireless cellular network |
FI20002845A (fi) * | 2000-12-22 | 2002-06-23 | Nokia Corp | Digitaalisen signaalin lähettäminen |
US6567387B1 (en) | 2000-11-07 | 2003-05-20 | Intel Corporation | System and method for data transmission from multiple wireless base transceiver stations to a subscriber unit |
DE60031896T2 (de) * | 2000-12-06 | 2007-04-05 | Nokia Corp. | Verfahren zum regeln der gewichte eines datensignals in mindestens zwei antennenelementen einer funkverbindungseinheit, moduls und kommunikationssystems |
US6646615B2 (en) * | 2000-12-08 | 2003-11-11 | Lucent Technologies Inc. | Method and apparatus for wireless communication utilizing electrical and magnetic polarization |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US7116722B2 (en) * | 2001-02-09 | 2006-10-03 | Lucent Technologies Inc. | Wireless communication system using multi-element antenna having a space-time architecture |
US20020136287A1 (en) * | 2001-03-20 | 2002-09-26 | Heath Robert W. | Method, system and apparatus for displaying the quality of data transmissions in a wireless communication system |
US20020159411A1 (en) * | 2001-03-23 | 2002-10-31 | Manish Airy | Method and system for scheduling the transmission of wireless data |
US6748024B2 (en) | 2001-03-28 | 2004-06-08 | Nokia Corporation | Non-zero complex weighted space-time code for multiple antenna transmission |
US6961545B2 (en) * | 2001-04-09 | 2005-11-01 | Atheros Communications, Inc. | Method and system for providing antenna diversity |
FR2827389B1 (fr) * | 2001-07-12 | 2003-10-17 | Bouygues Telecom Sa | Dispositif portable pour la mesure et l'analyse du champ electromagnetique ambiant |
US7149254B2 (en) * | 2001-09-06 | 2006-12-12 | Intel Corporation | Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems |
WO2003036614A2 (en) * | 2001-09-12 | 2003-05-01 | Bitwave Private Limited | System and apparatus for speech communication and speech recognition |
US7218906B2 (en) | 2001-10-04 | 2007-05-15 | Wisconsin Alumni Research Foundation | Layered space time processing in a multiple antenna system |
US20030067890A1 (en) * | 2001-10-10 | 2003-04-10 | Sandesh Goel | System and method for providing automatic re-transmission of wirelessly transmitted information |
US7336719B2 (en) * | 2001-11-28 | 2008-02-26 | Intel Corporation | System and method for transmit diversity base upon transmission channel delay spread |
US6785520B2 (en) | 2002-03-01 | 2004-08-31 | Cognio, Inc. | System and method for antenna diversity using equal power joint maximal ratio combining |
WO2003075471A2 (en) * | 2002-03-01 | 2003-09-12 | Cognio, Inc. | System and method for joint maximal ratio combining |
US6687492B1 (en) * | 2002-03-01 | 2004-02-03 | Cognio, Inc. | System and method for antenna diversity using joint maximal ratio combining |
US6873651B2 (en) * | 2002-03-01 | 2005-03-29 | Cognio, Inc. | System and method for joint maximal ratio combining using time-domain signal processing |
US6862456B2 (en) * | 2002-03-01 | 2005-03-01 | Cognio, Inc. | Systems and methods for improving range for multicast wireless communication |
JP3763793B2 (ja) * | 2002-03-12 | 2006-04-05 | 株式会社東芝 | 受信装置及び送受信装置 |
US6871049B2 (en) * | 2002-03-21 | 2005-03-22 | Cognio, Inc. | Improving the efficiency of power amplifiers in devices using transmit beamforming |
US7012978B2 (en) * | 2002-03-26 | 2006-03-14 | Intel Corporation | Robust multiple chain receiver |
SE0201103D0 (sv) | 2002-04-11 | 2002-04-11 | Ericsson Telefon Ab L M | Diagonally Layered Multi-Antenna Transmission for Frequency Selective Channels |
JP2003332963A (ja) * | 2002-05-17 | 2003-11-21 | Toshiba Corp | 無線通信システム及び無線通信装置 |
US7327800B2 (en) * | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
US20030235252A1 (en) * | 2002-06-19 | 2003-12-25 | Jose Tellado | Method and system of biasing a timing phase estimate of data segments of a received signal |
US7184713B2 (en) * | 2002-06-20 | 2007-02-27 | Qualcomm, Incorporated | Rate control for multi-channel communication systems |
US7136437B2 (en) * | 2002-07-17 | 2006-11-14 | Lucent Technologies Inc. | Method and apparatus for receiving digital wireless transmissions using multiple-antenna communication schemes |
EP1540830B9 (en) * | 2002-07-30 | 2009-09-16 | IPR Licensing Inc. | System and method for multiple-input multiple-output (mimo) radio communication |
US8194770B2 (en) | 2002-08-27 | 2012-06-05 | Qualcomm Incorporated | Coded MIMO systems with selective channel inversion applied per eigenmode |
US7349438B2 (en) | 2002-09-17 | 2008-03-25 | Lucent Technologies Inc. | Formatter, method of formatting encoded symbols and wireless communication system employing the same |
US20040121730A1 (en) * | 2002-10-16 | 2004-06-24 | Tamer Kadous | Transmission scheme for multi-carrier MIMO systems |
US7324429B2 (en) | 2002-10-25 | 2008-01-29 | Qualcomm, Incorporated | Multi-mode terminal in a wireless MIMO system |
US7002900B2 (en) | 2002-10-25 | 2006-02-21 | Qualcomm Incorporated | Transmit diversity processing for a multi-antenna communication system |
US8570988B2 (en) | 2002-10-25 | 2013-10-29 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8134976B2 (en) | 2002-10-25 | 2012-03-13 | Qualcomm Incorporated | Channel calibration for a time division duplexed communication system |
US8170513B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
US7986742B2 (en) | 2002-10-25 | 2011-07-26 | Qualcomm Incorporated | Pilots for MIMO communication system |
US8208364B2 (en) | 2002-10-25 | 2012-06-26 | Qualcomm Incorporated | MIMO system with multiple spatial multiplexing modes |
US8169944B2 (en) | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Random access for wireless multiple-access communication systems |
US8218609B2 (en) | 2002-10-25 | 2012-07-10 | Qualcomm Incorporated | Closed-loop rate control for a multi-channel communication system |
US8320301B2 (en) | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
US7209522B1 (en) | 2002-12-12 | 2007-04-24 | Marvell International Ltd. | Blast MIMO signal processing method and apparatus |
KR100552669B1 (ko) * | 2002-12-26 | 2006-02-20 | 한국전자통신연구원 | 층적 공간-시간 구조의 검파기를 갖는 다중 입출력시스템에 적용되는 적응 변복조 장치 및 그 방법 |
US7216282B2 (en) * | 2003-02-19 | 2007-05-08 | Harris Corporation | Mobile ad-hoc network (MANET) including forward error correction (FEC), interleaving, and multi-route communication features and related methods |
US7327795B2 (en) * | 2003-03-31 | 2008-02-05 | Vecima Networks Inc. | System and method for wireless communication systems |
US7099678B2 (en) * | 2003-04-10 | 2006-08-29 | Ipr Licensing, Inc. | System and method for transmit weight computation for vector beamforming radio communication |
FR2854995B1 (fr) * | 2003-05-14 | 2005-07-29 | Nortel Networks Ltd | Modulateur et demodulateur a etalement de spectre |
US7079870B2 (en) | 2003-06-09 | 2006-07-18 | Ipr Licensing, Inc. | Compensation techniques for group delay effects in transmit beamforming radio communication |
US7352718B1 (en) | 2003-07-22 | 2008-04-01 | Cisco Technology, Inc. | Spatial division multiple access for wireless networks |
US7403790B2 (en) * | 2003-09-04 | 2008-07-22 | Lucent Technologies Inc. | Methods for signaling broadcast and multicast information in communication networks |
US7356089B2 (en) * | 2003-09-05 | 2008-04-08 | Nortel Networks Limited | Phase offset spatial multiplexing |
CN1883151B (zh) * | 2003-09-15 | 2010-06-16 | 英特尔公司 | 用于传递多个空间信号流的多载波发射机、多载波接收机和方法 |
KR100580840B1 (ko) * | 2003-10-09 | 2006-05-16 | 한국전자통신연구원 | 다중 입력 다중 출력 시스템의 데이터 통신 방법 |
KR20050038122A (ko) * | 2003-10-21 | 2005-04-27 | 한국전자통신연구원 | 다중입력 다중출력에서의 적응 수신 시스템 및 그 방법 |
US9473269B2 (en) | 2003-12-01 | 2016-10-18 | Qualcomm Incorporated | Method and apparatus for providing an efficient control channel structure in a wireless communication system |
US7430190B2 (en) * | 2004-01-22 | 2008-09-30 | The Regents Of The University Of California | Systems and methods for resource allocation to multiple antenna arrays for maintaining a constant bit rate (CBR) channel |
JP4000123B2 (ja) * | 2004-03-15 | 2007-10-31 | 株式会社東芝 | 無線送信装置及び方法 |
JP4543737B2 (ja) | 2004-05-10 | 2010-09-15 | ソニー株式会社 | 無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム |
JP4604545B2 (ja) | 2004-05-10 | 2011-01-05 | ソニー株式会社 | 無線通信システム、無線通信装置及び無線通信方法ム |
FR2873878A1 (fr) | 2004-08-02 | 2006-02-03 | Nortel Networks Ltd | Procede d'emission radio a diversite spatiale et emetteur radio mettant en oeuvre le procede |
US9002299B2 (en) | 2004-10-01 | 2015-04-07 | Cisco Technology, Inc. | Multiple antenna processing on transmit for wireless local area networks |
WO2006055719A2 (en) | 2004-11-16 | 2006-05-26 | The Board Of Regents, The University Of Texas System | Precoding system and method for multi-user transmission in multiple antenna wireless systems |
US20060133338A1 (en) | 2004-11-23 | 2006-06-22 | Interdigital Technology Corporation | Method and system for securing wireless communications |
KR100587457B1 (ko) * | 2004-12-02 | 2006-06-09 | 한국전자통신연구원 | 다중 송수신 시스템에서의 신호 검파 방법 및 다중 송수신시스템의 수신 장치 |
JP4765322B2 (ja) | 2005-01-21 | 2011-09-07 | ソニー株式会社 | 無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム |
US20060176971A1 (en) * | 2005-02-07 | 2006-08-10 | Nissani Nissensohn Daniel N | Multi input multi output wireless communication reception method and apparatus |
US7583763B2 (en) | 2005-02-07 | 2009-09-01 | Mimopro Ltd. | Multi input multi output wireless communication reception method and apparatus |
US7436901B2 (en) * | 2005-04-19 | 2008-10-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Selection of channel coding and multidimensional interleaving schemes for improved performance |
US7466749B2 (en) | 2005-05-12 | 2008-12-16 | Qualcomm Incorporated | Rate selection with margin sharing |
US8358714B2 (en) | 2005-06-16 | 2013-01-22 | Qualcomm Incorporated | Coding and modulation for multiple data streams in a communication system |
US8300798B1 (en) | 2006-04-03 | 2012-10-30 | Wai Wu | Intelligent communication routing system and method |
US7852964B2 (en) * | 2006-06-19 | 2010-12-14 | Mayflower Communications Company, Inc. | Antijam filter system and method for high fidelity high data rate wireless communication |
CN100583649C (zh) * | 2007-07-23 | 2010-01-20 | 华为技术有限公司 | 矢量编/解码方法、装置及流媒体播放器 |
US8275064B2 (en) * | 2008-01-25 | 2012-09-25 | Mint Access Fund, Llc | Enhanced MIMO detection method and apparatus |
US20110142181A1 (en) * | 2009-11-09 | 2011-06-16 | Amir Leshem | Communication system |
CN103595663B (zh) * | 2012-08-17 | 2016-12-21 | 重庆重邮信科通信技术有限公司 | 一种发射复数信号的估计方法 |
US9800310B2 (en) * | 2016-02-19 | 2017-10-24 | Elwha Llc | Transmitter configured to provide a channel capacity that exceeds a saturation channel capacity |
US9780853B2 (en) * | 2016-02-19 | 2017-10-03 | Elwha Llc | Receiver configured to provide a channel capacity that exceeds a saturation channel capacity |
US10236955B2 (en) | 2016-02-19 | 2019-03-19 | Elwha Llc | System with transmitter and receiver remote from one another and configured to provide a channel capacity that exceeds a saturation channel capacity |
US10236947B2 (en) | 2016-02-19 | 2019-03-19 | Elwha Llc | System with transmitter and receiver configured to provide a channel capacity that exceeds a saturation channel capacity |
US10334515B2 (en) | 2017-01-13 | 2019-06-25 | ENK Wireless, Inc. | Conveying information via auxiliary device selection |
US11075740B2 (en) | 2018-05-07 | 2021-07-27 | ENK Wireless, Inc. | Systems/methods of communications using a plurality of cooperative devices |
US11100796B2 (en) | 2018-05-07 | 2021-08-24 | ENK Wireless, Inc. | Systems/methods of improving vehicular safety |
US10681716B2 (en) | 2018-05-07 | 2020-06-09 | ENK Wireless, Inc. | Systems/methods of providing increased wireless capacity, vehicular safety, electrical power wirelessly, and device control responsive to geographic position |
US10804998B2 (en) | 2018-05-07 | 2020-10-13 | ENK Wireless, Inc. | Systems/methods of providing increased wireless capacity, vehicular safety, electrical power wirelessly, and device control responsive to geographic position |
WO2019234837A1 (ja) * | 2018-06-05 | 2019-12-12 | 三菱電機株式会社 | 最適化システムおよび最適化方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL161323C (nl) * | 1968-02-23 | 1980-01-15 | Philips Nv | Tijdmultiplextransmissiestelsel voor overdracht van signalen met behulp van pulscodemodulatie. |
GB1234541A (ja) * | 1969-02-05 | 1971-06-03 | ||
US3629509A (en) * | 1969-05-01 | 1971-12-21 | Bell Telephone Labor Inc | N-path filter using digital filter as time invariant part |
US4292639A (en) * | 1979-12-17 | 1981-09-29 | Servo Corporation Of America | Quasi-doppler direction finding equipment |
US4353119A (en) * | 1980-06-13 | 1982-10-05 | Motorola Inc. | Adaptive antenna array including batch covariance relaxation apparatus and method |
DE3108980C2 (de) * | 1981-03-10 | 1983-09-08 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Doppler-Drehfunkfeuer mit einer Überwachungseinrichtung |
US4513383A (en) * | 1981-09-24 | 1985-04-23 | Rockwell International Corporation | Separation of communication signals in an adaptive antenna array |
US4931977A (en) * | 1987-10-30 | 1990-06-05 | Canadian Marconi Company | Vectorial adaptive filtering apparatus with convergence rate independent of signal parameters |
US4947176A (en) * | 1988-06-10 | 1990-08-07 | Mitsubishi Denki Kabushiki Kaisha | Multiple-beam antenna system |
US5828658A (en) * | 1991-12-12 | 1998-10-27 | Arraycomm, Inc. | Spectrally efficient high capacity wireless communication systems with spatio-temporal processing |
US5175558A (en) * | 1992-02-10 | 1992-12-29 | Trw Inc. | Nulling system for constraining pulse jammer duty factors |
SE470078B (sv) * | 1992-03-27 | 1993-11-01 | Ericsson Telefon Ab L M | Basstation för cellindelade frekvenshoppande TDMA- radiokommunikationssystem |
US5479448A (en) * | 1992-03-31 | 1995-12-26 | At&T Corp. | Method and apparatus for providing antenna diversity |
DE69331140T2 (de) * | 1993-08-03 | 2002-07-04 | Alcatel Sa | Funkkommunikationssystem mit Multisensorempfangsstation und einer Vielzahl von Datenpaketen aussendenden Sendestationen |
US5434578A (en) * | 1993-10-22 | 1995-07-18 | Westinghouse Electric Corp. | Apparatus and method for automatic antenna beam positioning |
FI97502C (fi) * | 1994-05-24 | 1996-12-27 | Nokia Telecommunications Oy | Menetelmä yhteyden laadun parantamiseksi solukkoradiojärjestelmässä ja tukiasema |
US5614914A (en) * | 1994-09-06 | 1997-03-25 | Interdigital Technology Corporation | Wireless telephone distribution system with time and space diversity transmission for determining receiver location |
US5581260A (en) * | 1995-01-27 | 1996-12-03 | Hazeltine Corporation | Angular diversity/spaced diversity cellular antennas and methods |
US5649287A (en) * | 1995-03-29 | 1997-07-15 | Telefonaktiebolaget Lm Ericsson | Orthogonalizing methods for antenna pattern nullfilling |
-
1996
- 1996-07-01 US US08/673,981 patent/US6097771A/en not_active Expired - Lifetime
-
1997
- 1997-06-23 DE DE69736504T patent/DE69736504T2/de not_active Expired - Lifetime
- 1997-06-23 EP EP97304395A patent/EP0817401B1/en not_active Expired - Lifetime
- 1997-07-01 JP JP9176070A patent/JPH1084324A/ja active Pending
- 1997-07-01 KR KR1019970030477A patent/KR100626099B1/ko not_active IP Right Cessation
-
2003
- 2003-09-03 JP JP2003311745A patent/JP4044500B2/ja not_active Expired - Fee Related
-
2007
- 2007-09-14 JP JP2007239813A patent/JP4272681B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008503902A (ja) * | 2004-06-21 | 2008-02-07 | ミツビシ・エレクトリック・リサーチ・ラボラトリーズ・インコーポレイテッド | 多入力多出力通信システムにおいて送信される層に対しデータレートを割り当てる方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4044500B2 (ja) | 2008-02-06 |
DE69736504T2 (de) | 2007-01-18 |
EP0817401B1 (en) | 2006-08-16 |
EP0817401A3 (en) | 2000-06-07 |
DE69736504D1 (de) | 2006-09-28 |
EP0817401A2 (en) | 1998-01-07 |
KR980013075A (ko) | 1998-04-30 |
JP4272681B2 (ja) | 2009-06-03 |
KR100626099B1 (ko) | 2006-12-27 |
JP2008048433A (ja) | 2008-02-28 |
JPH1084324A (ja) | 1998-03-31 |
US6097771A (en) | 2000-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4044500B2 (ja) | ディジタル無線通信装置 | |
US7116722B2 (en) | Wireless communication system using multi-element antenna having a space-time architecture | |
KR101094684B1 (ko) | 무선 라디오 네트워크에서의 분산형 공간-시간 코딩을 위한방법 및 장치 | |
US5636242A (en) | Diversity transmitter/receiver | |
KR101041945B1 (ko) | 다중 안테나 시스템에서 신호 검출 장치 및 방법 | |
KR101092537B1 (ko) | 선형 프리코드화된 신호의 다중 안테나 전송방법, 장치, 그신호 및 그 수신방법 | |
US6560295B1 (en) | Method of generating space-time codes for generalized layered space-time architectures | |
US6618454B1 (en) | Diversity coded OFDM for high data-rate communication | |
US20070147543A1 (en) | Extension of space-time block code for transmission with more than two transmit antennas | |
US20100316151A1 (en) | Receiving apparatus, receiving method and communication system | |
EA016296B1 (ru) | Система радиочастотных ofdm-mimo передач | |
WO2006025635A1 (en) | A structured space-time code achieving the full diversity and full rate and generating method thereof, and multi-input multi-output system | |
WO2008001979A1 (en) | Transmitter having full-diversity and full-rate, a linear space-time code generating method for the transmitter, and a mimo system using same | |
US6865373B2 (en) | Apparatus and method for encoding and decoding data within wireless networks | |
JP2004222281A (ja) | 4個の送信アンテナを使用する無線通信システムの送受信装置 | |
JP4157043B2 (ja) | 少なくとも3つの送信アンテナを使用する無線通信システムの受信装置 | |
KR100526510B1 (ko) | 이동 통신시스템의 다중 안테나 신호 송수신 장치 및 방법 | |
US20050254445A1 (en) | Receiver and method of operation thereof | |
KR20080029872A (ko) | 다중 안테나 통신 시스템에서 데이터를 인코딩/디코딩하기위한 장치 및 방법 | |
KR100848906B1 (ko) | 다중 입력 다중 출력 통신 시스템에서 신호를송신/수신하는 방법 및 이를 위한 장치 | |
CN108599901B (zh) | 一种基于多相似空时编码的无线传输方法 | |
KR101026021B1 (ko) | 시공간 블록 부호의 검출 방법 및 장치 | |
KR100459133B1 (ko) | 다중 입력 다중 출력 시스템에서의 신호 전송 장치 및 방법 | |
Hochwald et al. | Space-time modulation for unknown fading | |
CN102281127A (zh) | 一种信号传输方法、系统及发射机和接收机 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040701 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040701 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070306 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070314 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20070614 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20070619 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070914 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20071024 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20071115 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101122 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101122 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111122 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111122 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121122 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121122 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131122 Year of fee payment: 6 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |