KR100958563B1 - 리스트 스피어 디코딩 및 ml mimo 수신기에 대한cqi 및 랭크 예측 - Google Patents
리스트 스피어 디코딩 및 ml mimo 수신기에 대한cqi 및 랭크 예측 Download PDFInfo
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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Abstract
Description
Claims (23)
- 무선 통신 송수신기 내의 비선형 송수신기에서 랭크를 계산하는 방법으로서,비선형 수신기에서 전송 신호를 수신하는 단계;상기 전송 신호가 수신되는 전송 채널로부터 서브행렬을 생성하는 단계;상기 서브행렬에 대한 Q-R 분해를 수행하며 각각의 상삼각행렬 (upper triangle matrix) 을 얻는 단계;하나 이상의 가능한 전송 랭크들에 대한 유효 SNR (signal to noise ratio) 을 결정하는 단계;상기 전송 신호의 모든 가능한 랭크들에 대한 채널 용량 메트릭을 결정하는 단계; 및전송을 위한 채널 용량을 최대화하는 랭크를 선택하는 단계를 포함하는, 랭크 계산 방법.
- 제 1 항에 있어서,리스트-스피어 (list-sphere) 디코딩 알고리즘을 사용하여 수신된 신호 전송을 디코드하는 단계를 더 포함하는, 랭크 계산 방법.
- 제 2 항에 있어서,최고 평균 용량을 갖는 랭크를 식별하는 단계를 더 포함하는, 랭크 계산 방 법.
- 제 3 항에 있어서,CQI를 계산하고, 역방향 링크 제어 채널을 이용하여 상기 CQI 및 랭크 정보를 피드백하는 단계를 더 포함하는, 랭크 계산 방법.
- 제 1 항에 있어서,상기 비선형 수신기는 최대 우도 (maximum likelihood) 기반 비선형 수신기인, 랭크 계산 방법.
- 제 1 항에 있어서,상기 무선 통신 송수신기는 다중 입력-다중 출력 (multiple input-multiple output; MIMO) 단일 코드 워드 (single code word; SCW) 무선 송수신기인, 랭크 계산 방법.
- 무선 통신 환경에 있어서 사용자 장치 내의 비선형 송수신기에서 랭크를 계산하는 것을 용이하게 하는 장치로서,다중 계층을 갖는 신호를 수신하는 비선형 수신기;랭크 계산 알고리즘과 관련된 정보를 저장하는 메모리; 및상기 메모리에 접속되며, 랭크 계산 알고리즘을 사용하여 수신된 신호에 대 한 최적 랭크를 결정하고, 전송 신호가 수신되는 전송 채널로부터 서브행렬을 생성하고, 상기 서브행렬에 대한 Q-R 분해를 수행하고, 각각의 상삼각행렬을 얻으며, 하나 이상의 가능한 전송 랭크들에 대한 유효 SNR을 결정하는 프로세서를 포함하는, 랭크 계산을 용이하게 하는 장치.
- 제 7 항에 있어서,상기 비선형 수신기는 리스트-스피어 디코딩 프로토콜을 사용하여 상기 수신된 신호를 디코드하는, 랭크 계산을 용이하게 하는 장치.
- 제 8 항에 있어서,상기 프로세서는 역방향 링크 제어 채널을 통한 전송에 대한 CQI 리포트를 생성하고, 그 CQI 리포트에 2 비트 최적 랭크 식별자를 첨부하는, 랭크 계산을 용이하게 하는 장치.
- 무선 통신 장치로서,사용자 장치에서 수신된 다중-계층 신호에 대한 비선형 디코딩 프로토콜을 수행하기 위한 수단;전송 신호가 수신되는 전송 채널로부터 서브행렬을 생성하기 위한 수단;상기 서브행렬에 대한 Q-R 분해를 수행하며 각각의 상삼각행렬을 얻기 위한 수단;하나 이상의 가능한 전송 랭크들에 대한 유효 SNR을 결정하기 위한 수단;수신된 신호의 각각의 가능한 랭크에 대한 채널 용량 메트릭을 결정하기 위한 수단; 및역방향 링크 제어 채널을 통해 CQI 정보를 갖는 최적 랭크와 관련된 정보를 전송하기 위한 수단을 포함하는, 무선 통신 장치.
- 제 10 항에 있어서,리스트-스피어 디코딩 프로토콜을 수행하여 상기 수신된 신호를 디코드하기 위한 수단을 더 포함하는, 무선 통신 장치.
- 제 11 항에 있어서,상기 최적 랭크를 갖는 계층의 상기 유효 SNR에 적어도 부분적으로 기초하여 상기 수신된 신호와 관련된 CQI 정보를 생성하기 위한 수단을 더 포함하는, 무선 통신 장치.
- 제 10 항에 있어서,상기 전송 수단은 상기 역방향 링크 제어 채널을 통해 5 ms마다 CQI 및 랭크 정보를 전송하는, 무선 통신 장치.
- 비선형 디코딩 프로토콜을 사용하여 사용자 장치에서 수신된 다중-계층 신호 를 디코드하고;전송 신호가 수신되는 전송 채널로부터 서브행렬을 생성하고;상기 서브행렬에 대한 Q-R 분해를 수행하며 각각의 상삼각행렬을 얻고;하나 이상의 가능한 전송 랭크들에 대한 유효 SNR을 결정하고;상기 전송 신호의 모든 가능한 랭크들에 대한 채널 용량 메트릭을 결정하며;전송을 위한 채널 용량을 최대화하는 랭크를 선택하기 위한 컴퓨터 실행가능 명령어가 저장된 컴퓨터 판독가능 매체.
- 제 14 항에 있어서,리스트-스피어 디코딩 알고리즘을 사용하여 수신된 신호 전송을 디코드하기 위한 명령어를 더 포함하는, 컴퓨터 판독가능 매체.
- 제 15 항에 있어서,각각의 상기 서브행렬에 대한 전송 용량을 결정하며 각각의 랭크에 대한 용량을 평균하기 위한 명령어를 더 포함하는, 컴퓨터 판독가능 매체.
- 제 16 항에 있어서,최고 평균 용량을 갖는 랭크를 식별하기 위한 명령어를 더 포함하는, 컴퓨터 판독가능 매체.
- 제 17 항에 있어서,CQI를 계산하고, 역방향 링크 제어 채널을 이용하여 상기 CQI 및 랭크 정보를 피드백하기 위한 명령어를 더 포함하는, 컴퓨터 판독가능 매체.
- 무선 통신 환경에서 처리량을 증가시키기 위한 명령어를 실행하는 프로세서로서,상기 명령어는,비선형 디코딩 프로토콜을 사용하여 사용자 장치에서 수신된 다중-계층 신호를 디코드하는 단계;전송 신호가 수신되는 전송 채널로부터 서브행렬을 생성하는 단계;상기 서브행렬에 대한 Q-R 분해를 수행하며 각각의 상삼각행렬을 얻는 단계;하나 이상의 가능한 전송 랭크들에 대한 유효 SNR을 결정하는 단계;상기 전송 신호의 모든 가능한 랭크들에 대한 채널 용량 메트릭을 결정하는 단계; 및전송을 위한 채널 용량을 최대화하는 랭크를 선택하는 단계를 포함하는, 프로세서.
- 제 19 항에 있어서,상기 명령어는 리스트-스피어 디코딩 알고리즘을 사용하여 수신된 신호 전송을 디코드하는 단계를 더 포함하는, 프로세서.
- 제 20 항에 있어서,상기 명령어는 최고 평균 용량을 갖는 랭크를 식별하는 단계를 더 포함하는, 프로세서.
- 제 21 항에 있어서,상기 명령어는 CQI를 계산하고, 역방향 링크 제어 채널을 이용하여 상기 CQI 및 랭크 정보를 피드백하는 단계를 더 포함하는, 프로세서.
- 제 22 항에 있어서,상기 비선형 디코딩 프로토콜은 최대 우도 (maximum likelihood; ML) 비선형 디코딩 프로토콜인, 프로세서.
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Application Number | Priority Date | Filing Date | Title |
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US68664605P | 2005-06-01 | 2005-06-01 | |
US60/686,646 | 2005-06-01 | ||
US69172205P | 2005-06-16 | 2005-06-16 | |
US60/691,722 | 2005-06-16 | ||
US11/445,098 | 2006-05-31 | ||
US11/445,098 US7428269B2 (en) | 2005-06-01 | 2006-05-31 | CQI and rank prediction for list sphere decoding and ML MIMO receivers |
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KR20080021057A KR20080021057A (ko) | 2008-03-06 |
KR100958563B1 true KR100958563B1 (ko) | 2010-05-18 |
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US (1) | US7428269B2 (ko) |
EP (1) | EP1889393A4 (ko) |
JP (2) | JP5059751B2 (ko) |
KR (1) | KR100958563B1 (ko) |
AR (1) | AR053884A1 (ko) |
TW (2) | TWI326177B (ko) |
WO (1) | WO2006130865A2 (ko) |
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KR20080021057A (ko) | 2008-03-06 |
WO2006130865A2 (en) | 2006-12-07 |
US20060276212A1 (en) | 2006-12-07 |
AR053884A1 (es) | 2007-05-23 |
EP1889393A4 (en) | 2012-11-21 |
JP5059751B2 (ja) | 2012-10-31 |
TWI454104B (zh) | 2014-09-21 |
JP5001469B2 (ja) | 2012-08-15 |
JP2008546323A (ja) | 2008-12-18 |
TWI326177B (en) | 2010-06-11 |
WO2006130865A3 (en) | 2008-01-17 |
TW200711412A (en) | 2007-03-16 |
TW201021484A (en) | 2010-06-01 |
US7428269B2 (en) | 2008-09-23 |
EP1889393A2 (en) | 2008-02-20 |
JP2012130015A (ja) | 2012-07-05 |
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