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In this paper, a new type hybrid automatic-repeat-request (HARQ) scheme based on different space-time codes is proposed and evaluated. The new scheme is divided into three major steps which are V-BLAST processing, TSTC processing and STBC processing. In order to benefit from spatial diversity, the proposed method transfer the next line of data matrix and joint-decode them, not the same as simply signal...
DSTBC (differential space-time block coding) system does not require CSI (channel state information) in both transmitter and receiver sides, but its SNR (signal to noise ratio) versus BER (bit error rate) characteristic is degraded compared with original STBC scheme which utilizes CSI at the receiver. In this paper, attempting to recover this performance loss originated from the differential decoding,...
In the context of MIMO systems, the issue of cross-layer design is receiving more and more attention from a research point of view due to the huge performance improvements at stake. In this paper, we investigate the cross-layer combining of adaptive modulation and truncated automatic repeat request (T-ARQ) in the general framework of MIMO systems employing orthogonal space-time block coding (STBC),...
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