JP2001518261A - 無線チャネルを介して伝送される受信信号からチャネルを見積もるための方法 - Google Patents
無線チャネルを介して伝送される受信信号からチャネルを見積もるための方法Info
- Publication number
- JP2001518261A JP2001518261A JP54469798A JP54469798A JP2001518261A JP 2001518261 A JP2001518261 A JP 2001518261A JP 54469798 A JP54469798 A JP 54469798A JP 54469798 A JP54469798 A JP 54469798A JP 2001518261 A JP2001518261 A JP 2001518261A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- channel
- subscriber
- doa
- incidence
- 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.)
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Classifications
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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
- H04B7/08—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
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
-
- 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
- H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
-
- 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
- H04B7/0851—Joint weighting using training sequences or error signal
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 無線チャネルを介して伝送される受信信号からチャネルを見積もるための 方法であって、 受信装置にKa個の受信センサが配属されており、 前記受信センサに割り当てられたKa個の受信信号を受信し、該受信信号は、 送信機個有の微細構造によって特徴付けられている少なくとも1つの加入者信号 から合成されて成り、ここでk番目の加入者信号(k=1…K)は受信場所にお ける入射方向(DOA)が種々異なっているKd個の部分波によって伝送され、 受信装置において加入者信号の部分波の少なくとも1つの入射方向を使用でき るようにし、 前記Ka個の受信信号および入射方向(DOA)から方向選択性のチャネルパ ルス応答(h)を求めるチャネル見積もり方法。 2. 前記方向選択性のチャネルパルス応答(h)を、加入者信号の、送信機個 有の微細構造を形成するトレーニングシーケンス(tseq1,tseq2,… tseqK)から突き止める 請求項1記載の方法。 3. 加入者信号は複数の送信機(MS)または反射体(P1,P2)から、受 信装置に複数の受信信号に重畳されて到来し、ここで該信号は同時に1つの 周波数チャネルにおいて伝送される 請求項1または2記載の方法。 4. 部分波の入射方向(DOA)および/または障害信号の入射方向(DOA s)は受信装置に先験的な知識として存在している 請求項1から3までのいずれか1項記載の方法。 5. 部分波の入射方向(DOA)および/または障害信号の入射方向(DOA s)を受信信号から突き止める 請求項1から3までのいずれか1項記載の方法。 6. 部分波の入射方向(DOA)を求めるために少なくとも、障害信号の入射 方向(DOAs)および/または相関マトリクスを考慮する 請求項5記載の方法。 7. 受信信号から方向選択性ではないチャネルパルス応答(g)を突き止め、 かつ 前記方向選択性ではないチャネルパルス応答(g)から少なくとも1つの部分 波の入射方向(DOA)を突き止める 請求項5記載の方法。 8. 前記方向選択性のチャネルパルス応答(h)を送信機(MS)ないし反射 体(P1,P2)に対応付けるために、加入者信号は個有のトレーニングシーケ ンス(tseq1,tseq2,…tseqK)によって分離可能である 請求項1から7までのいずれか1項記載の方法。 9. 前記方向選択性のチャネルパルス応答(h)を送信機(MS)に対応付け るために、加入者信号は個有の加入者コード(tc1,tc2,…tcK)を用 いた非拡散化によって分離可能である 請求項1から8までのいずれか1項記載の方法。 10. 部分波の入射方向(DOA)を突き止めるために、ある時間間隔にわたる 突き止められた値の平均化を行う 請求項4または5記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712501.8 | 1997-03-25 | ||
DE19712501 | 1997-03-25 | ||
PCT/DE1998/000877 WO1998043459A2 (de) | 1997-03-25 | 1998-03-25 | Verfahren zum kanalschätzen aus über einen funkkanal übertragenen empfangssignalen |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001518261A true JP2001518261A (ja) | 2001-10-09 |
JP3935969B2 JP3935969B2 (ja) | 2007-06-27 |
Family
ID=7824564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54469798A Expired - Fee Related JP3935969B2 (ja) | 1997-03-25 | 1998-03-25 | 無線チャネルを介して伝送される受信信号からチャネルを見積もるための方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6519477B1 (ja) |
EP (1) | EP1013003B1 (ja) |
JP (1) | JP3935969B2 (ja) |
CN (1) | CN1113485C (ja) |
DE (1) | DE59808380D1 (ja) |
ES (1) | ES2200348T3 (ja) |
WO (1) | WO1998043459A2 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19825536B4 (de) * | 1998-06-08 | 2005-05-19 | IQ wireless GmbH, Entwicklungsgesellschaft für Systeme und Technologien der Telekommunikation | Verfahren und Vorrichtung für ein vollduplexfähiges Funkübertragungssystem mit CDMA-Zugriff |
FI982857A (fi) * | 1998-12-31 | 2000-07-01 | Nokia Networks Oy | Vastaanottomenetelmä ja vastaanotin |
US6816541B1 (en) * | 1999-05-24 | 2004-11-09 | Texas Instruments Incorporated | Spread spectrum interference cancellation |
CN1108071C (zh) | 2000-04-11 | 2003-05-07 | 信息产业部电信科学技术研究院 | 码分多址移动通信系统中终端设备端的一种信号处理方法 |
US6775261B1 (en) * | 2000-06-05 | 2004-08-10 | Lsi Logic Corporation | Frequency division multiple access system searching |
US7720472B1 (en) * | 2000-09-14 | 2010-05-18 | The Directv Group, Inc. | Stratospheric-based communication system having interference cancellation |
US6907270B1 (en) | 2000-10-23 | 2005-06-14 | Qualcomm Inc. | Method and apparatus for reduced rank channel estimation in a communications system |
US7187949B2 (en) * | 2001-01-19 | 2007-03-06 | The Directv Group, Inc. | Multiple basestation communication system having adaptive antennas |
US7809403B2 (en) | 2001-01-19 | 2010-10-05 | The Directv Group, Inc. | Stratospheric platforms communication system using adaptive antennas |
US8396513B2 (en) * | 2001-01-19 | 2013-03-12 | The Directv Group, Inc. | Communication system for mobile users using adaptive antenna |
KR100679435B1 (ko) * | 2003-03-04 | 2007-02-06 | 닛본 덴끼 가부시끼가이샤 | 초기단계부터 지향성 빔의 우수한 수신품질을 갖는 적응형안테나 수신 장치 |
US7313168B2 (en) | 2003-03-06 | 2007-12-25 | Nokia Corporation | Method and apparatus for receiving a CDMA signal |
US7333575B2 (en) * | 2003-03-06 | 2008-02-19 | Nokia Corporation | Method and apparatus for receiving a CDMA signal |
CN100431386C (zh) * | 2005-05-12 | 2008-11-05 | 上海原动力通信科技有限公司 | 同频多小区终端来波方向的估计方法 |
JP5091257B2 (ja) * | 2007-02-22 | 2012-12-05 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | セルラーアクセスシステムにおける削減された干渉に対する方法および装置 |
US10177947B2 (en) | 2015-07-24 | 2019-01-08 | Brian G. Agee | Interference-excising diversity receiver adaptation using frame synchronous signal features and attributes |
US11381281B2 (en) * | 2020-02-04 | 2022-07-05 | Powermat Technologies Ltd. | Fast data transmission for wireless power transfer systems |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5299148A (en) * | 1988-10-28 | 1994-03-29 | The Regents Of The University Of California | Self-coherence restoring signal extraction and estimation of signal direction of arrival |
US5255210A (en) * | 1988-10-28 | 1993-10-19 | The Regents Of The University Of California | Self-coherence restoring signal extraction apparatus and method |
DE4201439A1 (de) * | 1992-01-21 | 1993-07-22 | Daimler Benz Ag | Verfahren und anordnung zur uebertragung hoher datenraten fuer den digitalen rundfunk |
TW351886B (en) * | 1993-09-27 | 1999-02-01 | Ericsson Telefon Ab L M | Using two classes of channels with different capacity |
JP3022194B2 (ja) * | 1994-09-02 | 2000-03-15 | 三菱電機株式会社 | ダイバーシチ受信装置 |
DE19511752A1 (de) | 1995-03-30 | 1996-10-10 | Siemens Ag | Verfahren zum hochauflösenden Auswerten von Signalen zur ein- oder zweidimensionalen Richtungs- oder Frequenzschätzung |
DE19535441A1 (de) * | 1995-09-23 | 1997-03-27 | Bosch Gmbh Robert | Antenne einer Zentralstation eines Punkt-zu-Mehrpunkt-Richtfunksystems |
US5887262A (en) * | 1996-04-19 | 1999-03-23 | Nokia Mobile Phones Limited | Smart antenna backwards compatibility in digital cellular systems |
US5856804A (en) * | 1996-10-30 | 1999-01-05 | Motorola, Inc. | Method and intelligent digital beam forming system with improved signal quality communications |
FI105063B (fi) * | 1997-05-16 | 2000-05-31 | Nokia Networks Oy | Menetelmä lähetyssuunnan määrittämiseksi ja radiojärjestelmä |
FI980616A (fi) * | 1997-11-05 | 1999-05-06 | Nokia Telecommunications Oy | Menetelmä parantaa radioyhteyden laatua solukkoradioverkossa |
-
1998
- 1998-03-25 WO PCT/DE1998/000877 patent/WO1998043459A2/de active IP Right Grant
- 1998-03-25 ES ES98928071T patent/ES2200348T3/es not_active Expired - Lifetime
- 1998-03-25 JP JP54469798A patent/JP3935969B2/ja not_active Expired - Fee Related
- 1998-03-25 CN CN98803717A patent/CN1113485C/zh not_active Expired - Fee Related
- 1998-03-25 DE DE59808380T patent/DE59808380D1/de not_active Expired - Lifetime
- 1998-03-25 EP EP98928071A patent/EP1013003B1/de not_active Expired - Lifetime
-
1999
- 1999-09-27 US US09/407,257 patent/US6519477B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1013003A2 (de) | 2000-06-28 |
WO1998043459A3 (de) | 1999-01-21 |
CN1113485C (zh) | 2003-07-02 |
EP1013003B1 (de) | 2003-05-14 |
CN1251704A (zh) | 2000-04-26 |
ES2200348T3 (es) | 2004-03-01 |
JP3935969B2 (ja) | 2007-06-27 |
US6519477B1 (en) | 2003-02-11 |
WO1998043459A2 (de) | 1998-10-01 |
DE59808380D1 (de) | 2003-06-18 |
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