JPH11511915A - 干渉打消方法及び受信器 - Google Patents
干渉打消方法及び受信器Info
- Publication number
- JPH11511915A JPH11511915A JP8511430A JP51143096A JPH11511915A JP H11511915 A JPH11511915 A JP H11511915A JP 8511430 A JP8511430 A JP 8511430A JP 51143096 A JP51143096 A JP 51143096A JP H11511915 A JPH11511915 A JP H11511915A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- receiver
- interference
- signals
- calculated
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.干渉信号の推定値を所望の信号から減算するマルチアクセス干渉打消方法 を使用するデータ送信システムの干渉打消方法であって、受信信号から得た推定 値に対して信頼係数を計算するような方法において、干渉信号の推定値に対して 計算された信頼係数をマルチアクセス干渉打消方法に使用することを特徴とする 方法。 2.干渉信号の推定値は、それらを所望の信号から減算する前に、各信号に対 して計算された信頼係数により重み付けされる請求項1に記載の方法。 3.推定値に対して計算された信頼係数は、〔0,1〕の範囲の値を得、推定 の信頼性が高い場合は係数値が1に近く、そして推定の信頼性が低い場合は係数 値が0に近い請求項1に記載の方法。 4.受信信号は、受信器において各々少なくとも2つの信号より成る多数のグ ループに分割され、各グループにおいて受け取った送信からの信号に対して同時 検出が行われ、各グループは連続的に検出され、既に検出されたグループの信号 は、その後のグループの検出の前に、再生されて、受け取った送信から減算され そして減算の前に検出された信号は、各信号に対して計算された信頼係数で重み 付けされる請求項1に記載の方法。 5.上記信号推定は、多段検出を使用する請求項1に記載の方法。 6.データ送信方法の受信器であって、受信信号に対してマルチアクセス干渉 打消を実行する手段(14)と、受信信号から得られた推定値に対して信頼係数を計 算する手段(21)とを備えた受信器において、干渉信号の推定値に対して計算され た信頼係数をマルチアクセス干渉打消に使用する手段(14)を備えたことを特徴と する受信器。 7.各推定値に対して計算された信頼係数により干渉信号の推定値を重み付け する手段(23)と、 干渉信号の推定値を所望の信号から減算する手段(24)とを備えた請求項6に記 載の受信器。 8.受信した信号を、各々少なくとも2つの信号より成る多数のグループに分 割するための手段(30)と、 各グループにおいて、受け取った送信からの信号に対して同時推定及び検出を 実行する手段(31,35,39)と、 各グループを連続的に検出する手段(31,35,39)と、 既に検出されたグループの信号を再生する手段(32,36)と、 各信号に対して計算された信頼係数により既に検出された信号を重み付けする 手段(32,36)と、 既に検出されたグループの信号を、その後のグループの検出の前に、受け取っ た送信から減算するための手段(34,38)とを備えた請求項6に記載の受信器。 9.多数の検出段(40-42)を備えた請求項6に記載の受信器。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI944739A FI944739A (fi) | 1994-10-07 | 1994-10-07 | Häiriönpoistomenetelmä ja vastaanotin |
FI944739 | 1994-10-07 | ||
PCT/FI1995/000553 WO1996011534A2 (en) | 1994-10-07 | 1995-10-06 | Interference cancellation method, and receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11511915A true JPH11511915A (ja) | 1999-10-12 |
JP4205761B2 JP4205761B2 (ja) | 2009-01-07 |
Family
ID=8541542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51143096A Expired - Fee Related JP4205761B2 (ja) | 1994-10-07 | 1995-10-06 | 干渉打消方法及び受信器 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6904109B1 (ja) |
EP (1) | EP0784888B1 (ja) |
JP (1) | JP4205761B2 (ja) |
CN (1) | CN1084094C (ja) |
AT (1) | ATE244472T1 (ja) |
AU (1) | AU695984B2 (ja) |
DE (1) | DE69531214T2 (ja) |
FI (1) | FI944739A (ja) |
NO (1) | NO971543L (ja) |
WO (1) | WO1996011534A2 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5933768A (en) * | 1997-02-28 | 1999-08-03 | Telefonaktiebolaget L/M Ericsson | Receiver apparatus, and associated method, for receiving a receive signal transmitted upon a channel susceptible to interference |
FI102866B1 (fi) | 1997-04-09 | 1999-02-26 | Nokia Telecommunications Oy | Häiriöiden vähentäminen matkaviestinjärjestelmässä |
FI104020B (fi) * | 1997-06-23 | 1999-10-29 | Nokia Telecommunications Oy | Vastaanottomenetelmä ja vastaanotin |
JPH11168408A (ja) | 1997-12-05 | 1999-06-22 | Fujitsu Ltd | 干渉キャンセラ装置 |
FI106492B (fi) * | 1999-03-09 | 2001-02-15 | Nokia Mobile Phones Ltd | Häiriönpoistomenetelmä |
US6404760B1 (en) * | 1999-07-19 | 2002-06-11 | Qualcomm Incorporated | CDMA multiple access interference cancellation using signal estimation |
US7315567B2 (en) * | 2000-07-10 | 2008-01-01 | Motorola, Inc. | Method and apparatus for partial interference cancellation in a communication system |
US6947475B2 (en) | 2001-01-26 | 2005-09-20 | Qualcomm Inc. | Method and apparatus for estimating channel characteristics using pilot and non-pilot data |
US7376175B2 (en) | 2001-03-14 | 2008-05-20 | Mercury Computer Systems, Inc. | Wireless communications systems and methods for cache enabled multiple processor based multiple user detection |
US7110431B2 (en) | 2001-03-14 | 2006-09-19 | Mercury Computer Systems, Inc. | Hardware and software for performing computations in a short-code spread-spectrum communications system |
WO2003041350A1 (en) * | 2001-11-09 | 2003-05-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Co-channel interference detector for cellular communications systems |
EP1311093B1 (en) * | 2001-11-09 | 2005-02-02 | Telefonaktiebolaget LM Ericsson (publ) | Co-channel interference detector for cellular communications systems |
US7724832B2 (en) * | 2004-05-27 | 2010-05-25 | Texas Instruments Incorporated | MIMO decoding |
US8254502B2 (en) * | 2008-12-22 | 2012-08-28 | Qualcomm Incorporated | Post decoding soft interference cancellation |
US10015696B2 (en) | 2014-06-11 | 2018-07-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Robust PBCH-IC method in LTE advanced |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3910739C3 (de) * | 1989-04-03 | 1996-11-21 | Deutsche Forsch Luft Raumfahrt | Verfahren zum Verallgemeinern des Viterbi-Algorithmus und Einrichtungen zur Durchführung des Verfahrens |
NZ239283A (en) * | 1990-08-23 | 1994-09-27 | Ericsson Telefon Ab L M | Mobile cellular radio: handoff between half rate and full rate channels according to estimated received signal quality |
US5218619A (en) * | 1990-12-17 | 1993-06-08 | Ericsson Ge Mobile Communications Holding, Inc. | CDMA subtractive demodulation |
US5151919A (en) * | 1990-12-17 | 1992-09-29 | Ericsson-Ge Mobile Communications Holding Inc. | Cdma subtractive demodulation |
US5136612A (en) * | 1990-12-31 | 1992-08-04 | At&T Bell Laboratories | Method and apparatus for reducing effects of multiple access interference in a radio receiver in a code division multiple access communication system |
GB9105101D0 (en) | 1991-03-11 | 1991-04-24 | British Telecomm | Error burst detection |
US5559757A (en) * | 1991-12-18 | 1996-09-24 | Catipovic; Josko A. | Spatial diversity processing for underwater acoustic telemetry |
WO1993022854A1 (en) | 1992-04-27 | 1993-11-11 | The Commonwealth Of Australia | Radio communication modem for receiving and estimating a transmitted symbol |
US5432754A (en) * | 1992-10-27 | 1995-07-11 | Northeastern University | Receiver for receiving a plurality of asynchronously transmitted signals |
US5323418A (en) | 1993-01-13 | 1994-06-21 | Motorola, Inc. | Code division multiple access (CDMA) inbound messaging system utilizing interference cancellation to recover inbound messages |
GB2279851B (en) * | 1993-07-01 | 1997-10-01 | Roke Manor Research | Threshold cancellation means for use in digital mobile radio networks |
JP2732783B2 (ja) * | 1993-08-31 | 1998-03-30 | 沖電気工業株式会社 | 符号分割多元接続復調装置 |
US5539749A (en) * | 1993-09-13 | 1996-07-23 | Siemens Aktiengesellschaft | Method for merging data streams |
JP3202125B2 (ja) * | 1994-03-10 | 2001-08-27 | 沖電気工業株式会社 | 符号分割多元接続システム |
FI943196A (fi) * | 1994-07-04 | 1996-01-05 | Nokia Telecommunications Oy | Vastaanottomenetelmä |
DE4431237A1 (de) * | 1994-09-02 | 1996-03-07 | Bosch Gmbh Robert | Verfahren zur Gewinnung von bitspezifischen Zuverlässigkeitsinformationen |
-
1994
- 1994-10-07 FI FI944739A patent/FI944739A/fi unknown
-
1995
- 1995-10-06 DE DE69531214T patent/DE69531214T2/de not_active Expired - Lifetime
- 1995-10-06 AT AT95934151T patent/ATE244472T1/de not_active IP Right Cessation
- 1995-10-06 US US08/817,114 patent/US6904109B1/en not_active Expired - Fee Related
- 1995-10-06 CN CN95195520A patent/CN1084094C/zh not_active Expired - Lifetime
- 1995-10-06 WO PCT/FI1995/000553 patent/WO1996011534A2/en active IP Right Grant
- 1995-10-06 AU AU36549/95A patent/AU695984B2/en not_active Ceased
- 1995-10-06 EP EP95934151A patent/EP0784888B1/en not_active Expired - Lifetime
- 1995-10-06 JP JP51143096A patent/JP4205761B2/ja not_active Expired - Fee Related
-
1997
- 1997-04-04 NO NO971543A patent/NO971543L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
ATE244472T1 (de) | 2003-07-15 |
DE69531214D1 (de) | 2003-08-07 |
FI944739A0 (fi) | 1994-10-07 |
EP0784888B1 (en) | 2003-07-02 |
AU695984B2 (en) | 1998-08-27 |
CN1084094C (zh) | 2002-05-01 |
WO1996011534A2 (en) | 1996-04-18 |
FI944739A (fi) | 1996-04-08 |
WO1996011534A3 (en) | 1996-05-23 |
NO971543D0 (no) | 1997-04-04 |
CN1159870A (zh) | 1997-09-17 |
DE69531214T2 (de) | 2004-04-15 |
US6904109B1 (en) | 2005-06-07 |
EP0784888A2 (en) | 1997-07-23 |
JP4205761B2 (ja) | 2009-01-07 |
AU3654995A (en) | 1996-05-02 |
NO971543L (no) | 1997-06-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7551664B2 (en) | Iterative and turbo-based method and apparatus for equalization of spread-spectrum downlink channels | |
JP2570967B2 (ja) | Cdma受信機 | |
KR100335711B1 (ko) | 직접시퀸스코드분할다중액세스통신시스템및그시스템용수신기 | |
EP0712553B1 (en) | A method and apparatus for receiving and decoding communication signals in a cdma receiver | |
US20020057730A1 (en) | Spreading factor detector | |
JP2003512759A (ja) | Cdma信号のマルチユーザ検出のための受信機 | |
US20130279557A1 (en) | Interference Cancellation with Time-Varying Interference and/or Distortion | |
US20040125863A1 (en) | Pilot aided adaptive minimum mean square interference cancellation and detection | |
US7218692B2 (en) | Multi-path interference cancellation for transmit diversity | |
CA2516981A1 (en) | Multi user detection using equalization and successive interference cancellation | |
JP4205761B2 (ja) | 干渉打消方法及び受信器 | |
US7167529B2 (en) | Method and device for radio signal reception | |
WO1996000470A1 (fr) | Procede et dispositif de reception de signaux multiplexes a division de code | |
US7720134B2 (en) | Frequency-domain multi-user access interference cancellation and nonlinear equalization in CDMA receivers | |
WO2002003561A1 (en) | Receiver and method of receiving a cdma signal in presence of interferers with unknown spreading factors | |
WO2002098011A1 (fr) | Appareil et procede de reception radio | |
EP1035681B1 (en) | Method for interference cancellation | |
EP1372308A1 (en) | Method and apparatus for adaptive channel equalization using decision feedback | |
EP1325563B1 (en) | Equalized parallel interference cancellation for cdma systems | |
Kohno | Spatial and temporal filtering for co-channel interference in CDMA | |
Latva-Aho et al. | Parallel interference cancellation receiver for DS-CDMA systems in fading channels | |
EP1892842B1 (en) | Equalized parallel interference cancellation for cdma systems | |
Karlsson et al. | Improved single-user detector for WCDMA systems based on Griffiths' algorithm | |
CN1925345A (zh) | 采用联合检测与串行干扰消除的自适应组合进行多用户检测 | |
KR20040036102A (ko) | 코드분할 다중접속에서의 다수 사용자 검출 시스템 및 그방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060221 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060208 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20060518 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20060518 |
|
A72 | Notification of change in name of applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A721 Effective date: 20060518 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20060703 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060817 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070417 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070816 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070925 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20071011 |
|
RD13 | Notification of appointment of power of sub attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7433 Effective date: 20080718 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080728 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20080718 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080829 |
|
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: 20081007 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081017 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111024 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
LAPS | Cancellation because of no payment of annual fees |