KR20040008227A - 선택적인 채널 전송을 사용하는 다중-채널 통신시스템에서 전송을 위한 데이터를 처리하기 위한 방법 및장치 - Google Patents
선택적인 채널 전송을 사용하는 다중-채널 통신시스템에서 전송을 위한 데이터를 처리하기 위한 방법 및장치 Download PDFInfo
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Abstract
Description
수신 SNR 범위 | 정보 비트/심볼의 # | 변조 심볼 | 코딩된 비트/심볼의 # | 코딩율 |
1.5-4.4 | 1 | QPSK | 2 | 1/2 |
4.4-6.4 | 1.5 | QPSK | 2 | 3/4 |
6.4-8.35 | 2 | 16-QAM | 4 | 1/2 |
8.35-10.4 | 2.5 | 16-QAM | 4 | 5/8 |
10.4-12.3 | 3 | 16-QAM | 4 | 3/4 |
12.3-14.15 | 3.5 | 64-QAM | 6 | 7/12 |
14.15-15.55 | 4 | 64-QAM | 6 | 2/3 |
15.55-17.35 | 4.5 | 64-QAM | 6 | 3/4 |
>17.35 | 5 | 64-QAM | 6 | 5/6 |
Claims (40)
- 다중-채널 통신 시스템내 다중 전송 채널을 토한 전송을 위해 데이터를 처리하는 방법으로서,데이터 전송에 이용가능한 다수의 전송 채널의 특정을 추정하는 단계;상기 다수의 전송 채널을 하나 이상의 전송 채널 그룹으로 분류하는 단계; 및상기 각각의 전송 채널에 대해,상기 추정된 채널 특성에 기초하여 데이터 전송에 사용할 하나 이상의 전송 채널을 선택하는 단계;정의된 할당 방식에 따라 상기 하나 이상의 선택된 전송 채널중에 상기 그룹에 이용가능한 모든 전송 전력을 할당하는 단계;상기 하나 이상의 선택된 전송 채널을 위한 데이터를 코딩 및 변조하는 단계; 및상기 할당된 전송 전력에 기초하여 상기 각각의 선택된 전송 채널을 위한 상기 코딩 및 변조된 데이터를 전송하는 단계를 포함하는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹에 이용가능한 모든 전송 전력은 상기 그룹내 하나 이상의 선택된 전송 채널에 동일하게 할당되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹에 이용가능한 모든 전송 전력은 상기 그룹내 하나 이상의 선택된 전송 채널에 불균일하게 할당되는 데이터 처리 방법.
- 제3항에 있어서, 상기 전송 전력의 대부분은 고성능을 달성할 수 있는 전송 채널에 할당되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹내 하나 이상의 전송 채널은 정의된 할당 방식에 따라 할당된 모든 전송 전력으로 달성되는 성능에 부분적으로 기초하여 선택되는 데이터 처리 방법.
- 제1항에 있어서,인터리빙 방식에 따라 상기 각각의 그룹을 위한 데이터를 인터리빙하는 단계를 더 포함하는 데이터 처리 방법.
- 제6항에 있어서, 상기 각각의 그룹을 위한 데이터는 상기 그룹내 모든 선택된 전송 채널에 대해 인터리빙되는 데이터 처리 방법.
- 제1항에 있어서, 상기 그룹내 하나 이상의 전송 채널은 임계값에 기초하여 선택되는 데이터 처리 방법.
- 제8항에 있어서, 상기 각각의 그룹에 대한 임계값은 상기 그룹내 선택된 전송 채널에 대한 고처리량을 제공하도록 선택되는 데이터 처리 방법.
- 제8항에 있어서, 상기 각각의 그룹에 대한 임계값은 상기 그룹내 이용가능한 전송 채널에 대한 최고 가능한 처리량을 제공하도록 선택되는 데이터 처리 방법.
- 제8항에 있어서, 상기 각각의 그룹에 대한 임계값은 특정 타겟 수신된 신호-대-잡음-플러스-간섭 비(SNR)인 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹은 상기 하나 이상의 전송 채널을 선택하는데 사용된 개별 임계값과 관련되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹내 하나 이상의 선택된 전송 채널에 대한 데이터는 공통 코딩 및 변조 방식에 기초하여 코딩 및 변조되는 데이터 처리 방법.
- 제1항에 있어서, 상기 각각의 그룹에 대한 데이터는 그룹에 대한 개별 코딩 및 변조 방식에 기초하여 코딩 및 변조되는 데이터 처리 방법.
- 제14항에 있어서, 상기 각각의 그룹에 대한 코딩 및 변조 방식은 다수의 가능한 코딩 및 변조 방식중에서 선택되는 데이터 처리 방법.
- 제1항에 있어서, 상기 다중-채널 통신 시스템은 직교 주파수 분할 변조(OFDM) 시스템이며, 상기 다수의 전송 채널은 다수의 주파수 서브채널에 해당하는 데이터 처리 방법.
- 제1항에 있어서, 상기 다중-채널 통신 시스템은 다중-입력 다중-출력(MIMO) 통신 시스템이며, 상기 다수의 전송 채널은 MIMO 채널의 다수의 공간 서브채널에 해당하는 데이터 처리 방법.
- 제17항에 있어서, 상기 MIMO 통신 시스템은 OFDM을 사용하며, 상기 다수의 전송 채널은 다수의 주파수 서브채널의 다수의 공간 서브채널에 해당하는 데이터 처리 방법.
- 제18항에 있어서, 상기 각각의 그룹은 개별 전송 안테나에 해당하며, 다수의 전송 채널은 다수의 주파수 서브채널에 해당하는 데이터 처리 방법.
- 제1항에 있어서, 상기 추정된 채널 특성은 채널 이득인 데이터 처리 방법.
- 제20항에 있어서, 각각의 그룹에 대해, 특정 전력 이득 임계값과 같거나 큰 전력 이득을 가진 전송 채널이 선택되며, 상기 전력 이득은 상기 채널 이득으로부터 유도되는 데이터 처리 방법.
- 제1항에 있어서, 상기 추정된 채널 특성은 수신된 신호-대-잡음-플러스-간섭 비(SNR)인 데이터 처리 방법.
- 제22항에 있어서, 각각의 그룹에 대해, 특정 SNR과 같거나 큰 SNR을 가진 전송 채널이 선택되는 데이터 처리 방법.
- 다중-채널 통신 시스템에서 데이터 전송을 제어하는 방법으로서,다수의 전송 채널을 통해 다수의 전송을 수신하는 단계;상기 수신된 전송에 기초하여 상기 다수의 전송 채널의 특성을 추정하는 단계;상기 추정된 채널 특성 및 메트릭에 기초하여 데이터 전송에 사용될 하나 이상의 전송 채널을 선택하는 단계; 및상기 다수의 전송 채널에 대한 채널 상태 정보(CSI)를 송신하는 단계를 포함하며, 상기 다수의 전송 채널에 이용가능한 모든 전송 전력은 정의된 할당 방식에 따라 하나 이상의 선택된 전송 채널에 할당되며, 데이터는 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널을 통해 전송되는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 정의된 할당 방식은 상기 하나 이상의 선택된 전송채널에 상기 모든 전송 전력을 균일하게 분배하는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 CSI는 상기 하나 이상의 선택된 전송 채널을 식별하는 데이터 전송 제어 방법.
- 제26항에 있어서, 상기 CSI는 상기 하나 이상의 선택된 전송 채널을 식별하기 위한 채널 마스크를 포함하는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 CSI는 상기 하나 이상의 선택된 전송 채널에 사용될 특정 코딩 및 변조를 식별하는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 CSI는 상기 하나 이상의 선택된 전송 채널에 사용될 특정 데이터율을 식별하는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 CSI는 이전에 송신된 CSI 이후 변화를 식별하는 차동 지시자를 포함하는 데이터 전송 제어 방법.
- 제24항에 있어서, 상기 하나 이상의 선택된 전송 채널을 통해 전송된 데이터는 공통 코딩 및 변조 방식에 따라 코딩 및 변조되는 데이터 전송 제어 방법.
- 다중-채널 통신 시스템에서, 데이터 전송에 사용하기 위한 전송 채널을 선택하는 방법으로서,코드율 세트 - 상기 각각의 코드율은 전송 이전에 데이터를 코딩하기 위해 선택됨 - 를 정의하는 단계;세트포인트 세트 - 상기 각각의 세트포인트는 개별 코드율에 해당하며, 해당 코드율로 특정 레벨의 성능에 요구되는 타겟 신호-대-잡음-플러스-간섭 비(SNR)를 지시함 - 를 정의하는 단계;각각의 코드율에 대해,데이터 전송에 사용할 수 있는 하나 이상의 전송 채널을 식별하는 단계 - 상기 하나 이상의 식별된 전송 채널은 모든 이용가능한 전송 전력이 정의된 할당 방식에 따라 하나 이상의 식별된 전송 채널에 분배될 때 상기 코드율에 해당하는 세트포인트를 획득함 - ; 및상기 하나 이상의 식별된 전송 채널 및 상기 할당된 전송 전력에 기초하여 상기 코드율에 대한 성능 메트릭을 결정하는 단계; 및데이터 전송에 사용할 최고 성능 메트릭을 가진 코드율과 관련된 식별된 전송 채널을 선택하는 단계를 포함하는 전송 채널 선택 방법.
- 제32항에 있어서, 상기 정의된 할당 방식은 상기 식별된 전송 채널에 모든 이용가능한 전송 전력을 균일하게 분배하는 전송 채널 선택 방법.
- 제32항에 있어서, 상기 각각의 코드율에 대한 성능 메트릭이 식별된 전송 채널에 의해 획득된 전체 처리량인 전송 채널 선택 방법.
- 다중-채널 통신 시스템내 송신기 유닛으로서,데이터 전송을 위한 사용에 이용가능한 다수의 전송 채널에 대한 채널 상태 정보(CSI)를 수신하며, 상기 이용가능한 전송 채널을 하나 이상의 그룹으로 분류하며, 상기 수신된 CSI에 기초하여 데이터 전송에 사용하기 위해 각각의 그룹내 하나 이상의 전송 채널을 선택하도록 동작하는 제어기; 및상기 제어기에 결합되며, 변조 심볼을 제공하기 위해 특정 코딩 및 변조 방식에 기초하여 각각이 그룹에 대해 수신, 코딩 및 변조하며, 정의된 할당 방식에 따라 상기 그룹내 하나 이상의 선택된 전송 채널에 각각의 그룹에 이용가능한 모든 전송 전력을 분배하며, 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널에 대한 변조 심볼을 전송하는 송신 데이터 처리기를 포함하는 송신기 유닛.
- 제35항에 있어서, 상기 정의된 할당 방식은 상기 그룹내 하나 이상의 전송 채널에 각각의 그룹을 위한 모든 이용가능한 전송 전력을 균일하게 분배하는 송신기 유닛.
- 제35항에 있어서,상기 송신 데이터 프로세서에 결합되며, 상기 변조 심볼을 수신하여 하나 이상의 심볼 스트림으로 디멀티플렉싱하도록 동작하는 송신 채널 프로세서를 더 포함하며, 상기 각각의 안테나를 위한 하나의 심볼 스트림은 상기 변조 심볼을 송신하는데 사용되는 송신기 유닛.
- 제37항에 있어서, 상기 송신 채널 프로세서는 수신된 CSI에 기초하여 상기 변조 심볼을 사전조절하도록 동작하는 송신기 유닛.
- 다중-채널 통신 시스템내 수신기 유닛으로서,다수의 전송 채널을 통해 수신된 다수의 전송을 처리하며 처리된 전송에 기초하여 다수의 전송 채널의 특성을 추정하도록 동작하는 수신 데이터 프로세서;상기 수신 데이터 프로세서에 결합되며, 상기 추정된 채널 특성 및 메트릭에 기초하여 데이터 전송에 사용하기 위한 하나 이상의 전송 채널을 선택하도록 동작하는 제어기; 및상기 제어기에 결합되며, 다수의 전송 채널에 대한 채널 상태 정보(CSI)를 수신하도록 동작하는 송신 데이터 프로세서를 포함하며,상기 다수의 전송 채널에 이용가능한 모든 전송 전력은 정의된 할당 방식에 따라 하나 이상의 선택된 전송 채널에 할당되며, 상기 데이터는 상기 할당된 전송 전력에 기초하여 각각의 선택된 전송 채널을 통해 상기 수신기 유닛에 전송되는 수신기 유닛.
- 제39항에 있어서, 상기 정의된 할당 방식은 상기 하나 이상의 선택된 전송 채널에 상기 모든 이용가능한 전송 전력을 균일하게 분배하는 수신기 유닛.
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KR100754058B1 (ko) | 2007-08-31 |
JP5490405B2 (ja) | 2014-05-14 |
US20030043732A1 (en) | 2003-03-06 |
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