KR100340377B1 - 디지털 통신 시스템에서의 탭핑된 지연 라인 프로세서의 탭 가중치들 조절 방법 - Google Patents
디지털 통신 시스템에서의 탭핑된 지연 라인 프로세서의 탭 가중치들 조절 방법 Download PDFInfo
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- KR100340377B1 KR100340377B1 KR1019990011555A KR19990011555A KR100340377B1 KR 100340377 B1 KR100340377 B1 KR 100340377B1 KR 1019990011555 A KR1019990011555 A KR 1019990011555A KR 19990011555 A KR19990011555 A KR 19990011555A KR 100340377 B1 KR100340377 B1 KR 100340377B1
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- 238000000034 method Methods 0.000 title claims description 7
- 238000004891 communication Methods 0.000 title description 3
- 238000012549 training Methods 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
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- 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
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- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Noise Elimination (AREA)
- Telephonic Communication Services (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Description
Claims (3)
- 기지의(known) 심볼 및 의사 기지(pseudo-known) 심볼을 참조하여, 연속적으로 반복하여, 탭핑된 지연 라인 공간 및/또는 시간 프로세서의 탭 가중치들을 조절하는 방법으로서,가중된 탭 출력은 합산되는데, 제 1 반복은 트레이닝 시퀀스의 기지의 심볼을 참조하여 실행되고, 후속 반복들은, 기지의 심볼 및 의사 기지 심볼 둘 모두를 참조하여 행해지며, 후자(의사 기지 심볼)는, 상기 합산된 탭 출력 신호의 실수부를 설정 레벨과 비교하고, 논리 0의 심볼값을 상기 설정 레벨의 한 쪽에 속하는 상기 합산된 탭 출력 신호들에 할당하고, 논리 1의 심볼값을 상기 설정 레벨의 다른 쪽에 속하는 상기 합산된 탭 출력 신호들에 할당하고, 상기 설정 레벨로부터 임계 거리를 초과하는 레벨의 상기 심볼값들을 의사 기지로 선택함으로써 선택되며, 상기 임계치는 반복들간에 변화하고, 연속되는 반복은 다음에 의해 평가되는데:상기 논리 0값이 할당된 상기 신호들의 레벨들의 평균과, 상기 논리 1 값이 할당된 상기 신호들의 레벨의 평균을 계산하고;상기 논리 0 값이 할당된 각 신호의 레벨과 그 각각의 평균 간의 거리와, 상기 논리 1 값이 할당된 각 신호의 레벨과 그 각각의 평균 간의 거리를 계산하고,상기 평균들로부터의 거리들의 합을 계산하고;상기 설정 레벨로부터 모든 신호들의 레벨들의 거리들을 계산하고;상기 설정 레벨로부터 모든 신호들의 레벨들의 거리들의 합을 계산하고;상기 평균들로부터의 거리들의 합 대 상기 설정 레벨로부터 모든 심볼들의 레벨들의 거리들의 합의 비율을 계산하는, 탭 가중치들 조절 방법
- 제 1 항에 있어서, 상기 가중치들 w는,w = Rxx -1rxd로서 결정되고, Rxx는 상기 시스템에 대한 입력의 자기상관 행렬의 추정값이고, rxd는 기지 심볼들 또는 기지의 심볼들 및 의사 기지 심볼들의 시퀀스와 상기 입력 신호의 상호상관 벡터의 추정치인, 탭 가중치들 조절 방법.
- 제 1 항 또는 제 2 항에 있어서, 상기 비율은 (1+N)에 의해 곱해지고, N은 설정 레벨에 참조한 값들이 할당된 심볼들과, 상기 기지의 시퀀스 또는 상기 기지의 시퀀스 및 의사 기지 시퀀스내의 심볼들 간의 에러의 수인, 탭 가중치들 조절 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98302655A EP0948171B1 (en) | 1998-04-03 | 1998-04-03 | Adaptive equaliser using known and pseudo-known symbols |
EP98302655.0 | 1998-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990082872A KR19990082872A (ko) | 1999-11-25 |
KR100340377B1 true KR100340377B1 (ko) | 2002-06-12 |
Family
ID=8234761
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990011556A KR19990082873A (ko) | 1998-04-03 | 1999-04-02 | 탭 가중값 조절 방법 |
KR1019990011555A KR100340377B1 (ko) | 1998-04-03 | 1999-04-02 | 디지털 통신 시스템에서의 탭핑된 지연 라인 프로세서의 탭 가중치들 조절 방법 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990011556A KR19990082873A (ko) | 1998-04-03 | 1999-04-02 | 탭 가중값 조절 방법 |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0948171B1 (ko) |
JP (1) | JP3441998B2 (ko) |
KR (2) | KR19990082873A (ko) |
CN (1) | CN1235456A (ko) |
AU (1) | AU724010B2 (ko) |
BR (1) | BR9901220A (ko) |
CA (1) | CA2265102A1 (ko) |
DE (1) | DE69828378T2 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006191319A (ja) * | 2005-01-05 | 2006-07-20 | Ntt Docomo Inc | 相対値通知方法、基地局及び移動局 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633107A (en) * | 1970-06-04 | 1972-01-04 | Bell Telephone Labor Inc | Adaptive signal processor for diversity radio receivers |
FR2423929A1 (fr) * | 1975-07-10 | 1979-11-16 | Ibm France | Procede et dispositif pour determiner rapidement les valeurs initiales des coefficients d'un egaliseur transversal |
FR2679721B1 (fr) * | 1991-07-22 | 1993-09-24 | Alcatel Radiotelephone | Procede d'egalisation adaptative reduisant l'interference intersymbole, et dispositif de reception et application correspondants. |
KR970008417B1 (ko) * | 1994-04-12 | 1997-05-23 | 엘지전자 주식회사 | 에이치디티브이(hdtv)용 채널등화기 |
-
1998
- 1998-04-03 DE DE69828378T patent/DE69828378T2/de not_active Expired - Lifetime
- 1998-04-03 EP EP98302655A patent/EP0948171B1/en not_active Expired - Lifetime
-
1999
- 1999-03-09 CA CA002265102A patent/CA2265102A1/en not_active Abandoned
- 1999-03-30 BR BR9901220-0A patent/BR9901220A/pt not_active IP Right Cessation
- 1999-04-01 AU AU23545/99A patent/AU724010B2/en not_active Ceased
- 1999-04-01 CN CN99104707A patent/CN1235456A/zh active Pending
- 1999-04-02 KR KR1019990011556A patent/KR19990082873A/ko active Search and Examination
- 1999-04-02 JP JP09562199A patent/JP3441998B2/ja not_active Expired - Fee Related
- 1999-04-02 KR KR1019990011555A patent/KR100340377B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1235456A (zh) | 1999-11-17 |
DE69828378D1 (de) | 2005-02-03 |
BR9901220A (pt) | 2000-06-13 |
KR19990082873A (ko) | 1999-11-25 |
EP0948171B1 (en) | 2004-12-29 |
AU2354599A (en) | 1999-10-14 |
JP2000196333A (ja) | 2000-07-14 |
AU724010B2 (en) | 2000-09-07 |
JP3441998B2 (ja) | 2003-09-02 |
KR19990082872A (ko) | 1999-11-25 |
DE69828378T2 (de) | 2005-12-08 |
EP0948171A1 (en) | 1999-10-06 |
CA2265102A1 (en) | 1999-10-03 |
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