DocumentCode :
2763136
Title :
A Novel Antenna Allocation in V-BLAST System with Hybrid ARQ
Author :
Kim, Bonghoe ; Hwang, Seung-Hoon
Author_Institution :
Mobile Commun. Technol. Res. Lab., LG Electron. Inc.
fYear :
2007
fDate :
11-15 March 2007
Firstpage :
1068
Lastpage :
1072
Abstract :
In this paper, an efficient algorithm of finding an antenna switching function is proposed for an antenna-switching scheme in vertical Bell Labs layered space-time (V-BLAST) with hybrid automatic repeat request (H-ARQ). The transmit antenna is switched for each retransmission, where the switching pattern is obtained by the criterion of maximizing the channel capacity. The size of search space in the algorithm is not dependent on the maximum number of transmission but only on the number of transmit antennas. From simulation results, the obtained antenna switching function is dependent on channel correlation characteristics. In addition, the SNR values give little impact on the antenna switching function. Simulation results demonstrate that the average throughput can be further improved by the antenna switching function in a correlated fading channel, without adding much complexity to the process.
Keywords :
automatic repeat request; channel allocation; channel capacity; channel coding; fading channels; space-time codes; transmitting antennas; V-BLAST system; antenna allocation; antenna switching function; channel capacity; channel correlation characteristics; fading channel; hybrid ARQ; hybrid automatic repeat request; transmit antenna; vertical Bell Labs layered space-time system; Automatic repeat request; Communications Society; Fading; Forward error correction; MIMO; Mobile antennas; Mobile communication; Receiving antennas; Throughput; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
ISSN :
1525-3511
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
Type :
conf
DOI :
10.1109/WCNC.2007.202
Filename :
4224447
Link To Document :
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