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학술대회 Sequential Pre-coding for a MIMO Hybrid ARQ
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저자
김진우, 강충구, 곽병재, 권동승
발행일
200904
출처
Vehicular Technology Conference (VTC) 2009 (Spring), pp.1-5
출판사
IEEE
DOI
https://dx.doi.org/10.1109/VETECS.2009.5073845
초록
While the conventional codebook is defined only for the initial transmission in the closed-loop MIMO system, this paper proposes a new retransmission structure with a sequence of multiple codebooks, rather than using a single identical codebook for every retransmission. The pre-coding matrices, in each codebook, are sequentially linked so that each one can be used for a sequential hybrid ARQ transmission attempt, without invoking any index feedback from the receiver. It has been shown that the proposed codebook structure provides a performance gain of more than 3dB over the conventional scheme in the long-term static channel.
KSP 제안 키워드
Closed-loop MIMO, Hybrid ARQ, MIMO system, Performance gain, pre-coding