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A Multi-Cyclic Redundancy Check (CRC) selective Hybrid Automatic-Repeat-reQuest (HARQ) scheme for improving the throughput efficiency of Multiple Input Multiple Output (MIMO) systems is proposed in this paper. According to different feedback information from the receiver, the proposed HARQ scheme employs two strategies, referred to as retransmission frame selection and space diversity. These two strategies...
In this paper, we compute the throughput of Hybrid ARQ schemes over slotted quasi static multiantenna channels. Specifically, we consider slotted Aloha, Hybrid ARQ Chase combining (HARQ-CC), and Hybrid ARQ incremental redundancy (HARQ-IR) schemes. Using reward-renewal theorem, we adopt closed-form throughput equations in [1] for multiantenna channels. Moreover, we investigate the affect of number...
Automatic repeat request (ARQ) schemes are quite effective for improving the throughput of system diversity in time-varying channel environments. In this paper, a dual-branch selection diversity receiver based selective repeat-ARQ scheme is investigated to evaluate the optimal throughput performance in terms of the average bit error rate in Rayleigh fading channels. Both uncorrelated and correlated...
Hybrid automatic repeat request (HARQ) is an indispensable error control technique for wireless packet access. A combination of multi-carrier code division multiple access (MC-CDMA) and HARQ can provide a good throughput performance in a severe frequency-selective fading channel. Recently, we proposed the space-time block coded-joint transmit/receive diversity (STBC-JTRD), which allows an arbitrary...
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