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Throughput of V-BLAST System using Hybrid ARQ in Correlated Fading Channels  

Kim, Bong-Hoe (LG Electronics)
Hwang, Seung-Hoon (Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.45, no.1, 2008 , pp. 66-71 More about this Journal
Abstract
In this paper, an antenna-switching scheme using negative acknowledgement for hybrid automatic repeat request (H-ARQ) is proposed and analyzed in the Vertical Bell Labs Layered Space-Time(V-BLAST) system, in which the transmit antenna is alternatively switched under retransmission. By analytically evaluating the channel capacity of the proposed scheme over correlated fading channels, it is shown that the adverse effect of the channel correlation is alleviated by the antenna switching scheme. Simulation results demonstrate that the average throughput may be improved in a correlated fading channel without adding much complexity to the process.
Keywords
V-BLAST; Negative Acknowledgement; Hybrid ARQ; Correlated fading channels;
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