KR100671390B1 - 채널 평가 및 파일롯 심볼 전송이 개선된 cdma 이동 통신 시스템 및 방법 - Google Patents
채널 평가 및 파일롯 심볼 전송이 개선된 cdma 이동 통신 시스템 및 방법 Download PDFInfo
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- KR100671390B1 KR100671390B1 KR1019990014347A KR19990014347A KR100671390B1 KR 100671390 B1 KR100671390 B1 KR 100671390B1 KR 1019990014347 A KR1019990014347 A KR 1019990014347A KR 19990014347 A KR19990014347 A KR 19990014347A KR 100671390 B1 KR100671390 B1 KR 100671390B1
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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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- 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
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
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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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- 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
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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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
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
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- 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
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
- H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
심볼 속도 (KSPS) | 현재 표준에서 시간 슬롯당 파일롯 심볼의 개수 | 시간 슬롯당 심볼의 개수 | 현재 파일롯 심볼 전송에 대한 대역폭 오버헤드 |
32 | 4 | 20 | 20% |
64 | 4 | 40 | 10% |
128 | 4 | 80 | 5% |
256 | 8 | 160 | 5% |
512 | 8 | 320 | 2.5% |
1024 | 8 | 640 | 1.25% |
심볼 레이트(KSPS) | 32 | 32 | 32 | 32 | 32 | 32 | 64 | 64 | 64 | 64 | 64 | 64 |
레일리 페이딩 경로 개수 | 2 | 2 | 2 | 4 | 4 | 4 | 2 | 2 | 2 | 4 | 4 | 4 |
최대 도플러 레이트(Hz) | 213 | 213 | 213 | 213 | 213 | 213 | 213 | 213 | 213 | 213 | 213 | 213 |
실제 도플러 레이트(Hz) | 5 | 80 | 213 | 5 | 80 | 213 | 5 | 80 | 213 | 5 | 80 | 213 |
슬롯 개수, N | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
심볼 개수, M | 32 | 32 | 32 | 32 | 32 | 32 | 64 | 64 | 64 | 64 | 64 | 64 |
Ebη0, 이상(dB) | -1.28 | -1.28 | -1.28 | -1.91 | -1.91 | -1.91 | -1.28 | -1.28 | -1.28 | -1.91 | -1.91 | -1.91 |
Ebη0,평균화된 채널 평가(dB) | -0.28 | -0.20 | 0.23 | -0.44 | -0.40 | -0.13 | -0.28 | -0.21 | 0.22 | -0.44 | -0.40 | -0.14 |
Ebη0, 반복적 채널 평가, 1회(dB) | -0.50 | -0.47 | -0.32 | -1.12 | -1.11 | -1.01 | -0.53 | -0.50 | -0.39 | -1.19 | -1.17 | -1.10 |
Ebη0, 반복적 채널 평가, 2회(dB) | -0.52 | -0.51 | -0.39 | -1.21 | -1.20 | -1.12 | -0.57 | -0.55 | -0.48 | -1.31 | -1.30 | -1.25 |
반복적 채널 평가의 Ebη0이득, 1회(dB) | 0.22 | 0.27 | 0.55 | 0.68 | 0.71 | 0.88 | 0.25 | 0.29 | 0.61 | 0.75 | 0.77 | 0.96 |
반복적 채널 평가의 Ebη0이득, 2회(dB) | 0.24 | 0.31 | 0.62 | 0.77 | 0.80 | 0.99 | 0.29 | 0.34 | 0.70 | 0.87 | 0.90 | 1.11 |
반복적 채널 평가의 예측 여분의 MIPS, 1회 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 |
반복적 채널 평가의 예측 여분의 MIPS, 2회 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 | 0.64 | 0.64 | 0.64 | 0.64 | 0.64 | 0.64 |
Claims (6)
- 이동 통신 채널을 통해 디지탈 정보를 수신하기 위한 장치에 있어서,상기 이동 통신 채널을 통해 전송되는 디지탈 데이타 블럭을 수신하기 위한 수단 - 상기 디지탈 데이타 블럭은 후속(subsequent) 채널 평가를 위해 상기 디지탈 데이타 블럭 내에 주기적으로 삽입되는 파일럿 심볼들을 포함함 -;상기 파일럿 심볼들을 이용하여 제1 채널 평가를 실행하여 모든 디지탈 데이타에 대해 제1 평가 전달 함수를 생성하기 위한 수단;상기 수신된 디지탈 데이타 블럭을 결합하기 위한 수단;상기 결합된 디지탈 데이타 블럭을 복조하여 복조 데이타를 얻고, 상기 디지탈 데이타 블럭에서 상기 복조 데이타를 제하여 결과 신호를 얻기 위한 수단; 및상기 결합 수단과 상기 복조 수단을 이용해 가장 최근의 결과 신호를 이용함으로써 모든 디지탈 데이타에 대해, 관련된 신호 대 잡음 비율이 적어도 허용 가능한 수준을 만족할 때까지, 다음의 그리고 그 이후의 채널 평가를 반복적으로 수행하기 위한 수단을 포함하는 이동 통신 채널을 통해 디지탈 정보를 수신하기 위한 장치.
- 삭제
- 이동 통신 채널을 통해 디지탈 정보를 전송 및 수신하는 방법에 있어서,이동 통신 채널을 통해 전송된 디지탈 데이타 블럭을 수신하는 단계 - 상기 디지탈 데이타 블럭은 후속 채널 평가를 위해 상기 디지탈 데이타 블럭 내에 주기적으로 삽입되는 파일럿 심볼들을 포함함-;모든 디지탈 데이타에 대해 제1 평가 전달 함수를 생성하기 위해 상기 파일롯 심볼들을 사용하여 제1 채널 평가를 실행하는 단계;상기 수신된 디지탈 데이타 블럭을 결합하는 단계;복조 데이타를 얻기 위해 상기 결합된 디지탈 데이타 블럭을 복조하는 단계;결과 신호를 얻기 위해 상기 디지탈 데이타 블럭에서 상기 복조 데이타를 제하는 단계; 및가장 최근의 결과 신호를 이용해 모든 디지탈 데이타에 대해, 관련된 신호 대 잡음 비율이 적어도 허용 가능한 수준을 만족할 때까지, 다음의 그리고 그 이후의 채널 평가를 반복적으로 수행하는 단계를 포함하는 디지탈 정보의 전송 및 수신 방법.
- 삭제
- 삭제
- 삭제
Applications Claiming Priority (2)
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US8267198P | 1998-04-22 | 1998-04-22 | |
US60/082,671 | 1998-04-22 |
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Publication Number | Publication Date |
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KR19990083387A KR19990083387A (ko) | 1999-11-25 |
KR100671390B1 true KR100671390B1 (ko) | 2007-01-22 |
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KR1019990014347A KR100671390B1 (ko) | 1998-04-22 | 1999-04-22 | 채널 평가 및 파일롯 심볼 전송이 개선된 cdma 이동 통신 시스템 및 방법 |
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US (1) | US6483821B1 (ko) |
EP (1) | EP0952682B1 (ko) |
JP (1) | JP2000050365A (ko) |
KR (1) | KR100671390B1 (ko) |
DE (1) | DE69922870T2 (ko) |
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US6700919B1 (en) * | 1999-11-30 | 2004-03-02 | Texas Instruments Incorporated | Channel estimation for communication system using weighted estimates based on pilot data and information data |
DE10002327A1 (de) * | 2000-01-20 | 2001-08-09 | Infineon Technologies Ag | Verfahren zur Bestimmung des aktuellen Signal-zu-Rausch-Verhältnisses und zur Leistungsregelung in Mobilfunksystemen mit Codemultiplex |
FR2805689B1 (fr) * | 2000-02-29 | 2003-07-04 | Thomson Csf | Procede et dispositif d'estimation d'un canal de propagation |
JP2001257627A (ja) * | 2000-03-13 | 2001-09-21 | Kawasaki Steel Corp | 無線受信機 |
US7149253B2 (en) * | 2000-03-21 | 2006-12-12 | Texas Instruments Incorporated | Wireless communication |
US6901120B2 (en) * | 2000-12-06 | 2005-05-31 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for iterative parameter estimation |
FR2818835B1 (fr) | 2000-12-22 | 2005-05-06 | Nortel Networks | Procede et dispositif de traitement de signal dans un recepteur de radiocommunication a etalement de spectre |
GB0031834D0 (en) | 2000-12-29 | 2001-02-14 | Nokia Networks Oy | Parameter estimation for adaptive antenna system |
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US6947475B2 (en) * | 2001-01-26 | 2005-09-20 | Qualcomm Inc. | Method and apparatus for estimating channel characteristics using pilot and non-pilot data |
US7697594B2 (en) | 2001-03-30 | 2010-04-13 | Texas Instruments Incorporated | Method and apparatus for regenerative based interference cancellation within a communication system |
US7230975B2 (en) * | 2001-08-07 | 2007-06-12 | Qualcomm Incorporated | Adaptive pilot filter for a wireless communication system |
GB0130687D0 (en) * | 2001-12-21 | 2002-02-06 | Nokia Corp | Parameter estimation for adaptive antenna system |
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AU2003903826A0 (en) | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
JPWO2003103328A1 (ja) * | 2002-05-31 | 2005-10-06 | 三菱電機株式会社 | 通信システム |
DE10322943B4 (de) * | 2003-05-21 | 2005-10-06 | Infineon Technologies Ag | Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung |
DE10334723A1 (de) | 2003-07-30 | 2005-02-24 | Bayer Materialscience Ag | Neue Bindemittelkombination für hochbeständige Kunststofflacke |
US7352829B2 (en) * | 2004-01-12 | 2008-04-01 | Infineon Technologies Ag | Data-aided channel estimation |
US7565111B2 (en) * | 2004-02-26 | 2009-07-21 | Texas Instruments Incorporated | Single-antenna interference cancellation receiver in time slot communication system |
GB2411546B (en) * | 2004-02-27 | 2007-05-30 | Toshiba Res Europ Ltd | Channel Estimation in a CDMA Receiver |
US7421041B2 (en) * | 2004-03-01 | 2008-09-02 | Qualcomm, Incorporated | Iterative channel and interference estimation and decoding |
US20050289537A1 (en) * | 2004-06-29 | 2005-12-29 | Lee Sam J | System and method for installing software on a computing device |
US8493942B2 (en) * | 2005-08-01 | 2013-07-23 | Qualcomm Incorporated | Interference cancellation in wireless communication |
EP2109972A1 (en) * | 2007-02-12 | 2009-10-21 | Nokia Corporation | Shared control channel data-assisted channel estimation |
JP5367545B2 (ja) * | 2009-11-24 | 2013-12-11 | 株式会社東芝 | 無線中継装置 |
RU2740475C2 (ru) | 2016-12-06 | 2021-01-14 | Эвоник Корпорейшн | Органофильные глины и буровые растворы, содержащие их |
DE102018206132B4 (de) * | 2018-04-20 | 2019-11-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Decodergestützte iterative Kanalschätzung |
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JP3013763B2 (ja) * | 1995-08-25 | 2000-02-28 | 日本電気株式会社 | キャリア同期ユニット |
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1999
- 1999-04-19 US US09/294,722 patent/US6483821B1/en not_active Expired - Lifetime
- 1999-04-21 EP EP99201224A patent/EP0952682B1/en not_active Expired - Lifetime
- 1999-04-21 DE DE69922870T patent/DE69922870T2/de not_active Expired - Lifetime
- 1999-04-22 JP JP11154221A patent/JP2000050365A/ja active Pending
- 1999-04-22 KR KR1019990014347A patent/KR100671390B1/ko not_active IP Right Cessation
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WO1997039557A1 (en) * | 1996-04-15 | 1997-10-23 | Ericsson Inc. | Pilot-symbol-assisted radiotelephone communications |
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JP2000050365A (ja) | 2000-02-18 |
EP0952682B1 (en) | 2004-12-29 |
KR19990083387A (ko) | 1999-11-25 |
EP0952682A3 (en) | 2003-04-16 |
DE69922870T2 (de) | 2005-12-22 |
US6483821B1 (en) | 2002-11-19 |
EP0952682A2 (en) | 1999-10-27 |
DE69922870D1 (de) | 2005-02-03 |
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