Title :
Hybrid ARQ scheme for space-time coded MIMO systems
Author :
Yu, Tianyue ; Qiu, Runhe
Author_Institution :
Coll. of Inf. & Commun. Eng., DongHua Univ., Shanghai, China
Abstract :
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 retransfer. And if channel is in good condition, that the proposed method gets spatial multiplexing for retransfer hardly occur. The proposed method takes advantage of V-BLAST, TSTC and STBC, moreover, it is a HARQ scheme that can improve transmit rate and resistance of interference at same time. Theory and simulation show this proposed method have higher throughput in most SNR regions and the result is also satisfying.
Keywords :
MIMO communication; automatic repeat request; channel coding; decoding; diversity reception; matrix algebra; space division multiplexing; space-time codes; wireless channels; TSTC processing; V-BLAST processing; automatic-repeat-request; data matrix; decoding; hybrid ARQ scheme; multiinput multioutput system; space-time coded MIMO system; spatial diversity; spatial multiplexing; Automatic repeat request; Decoding; Diversity methods; Interference; MIMO; Receiving antennas; Space time codes; Throughput; Transmitting antennas; Wireless communication; HARQ; MIMO; STBC; TSTC; V-BLAST;
Conference_Titel :
Control and Decision Conference, 2009. CCDC '09. Chinese
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-2722-2
Electronic_ISBN :
978-1-4244-2723-9
DOI :
10.1109/CCDC.2009.5191827