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A Closed Loop Orthogonal Space-Time Block Code for Maximal Channel Gains  

Lee, Ki-Ho (School of Electronic Engineering, Soongsil University)
Kim, San-Hae (School of Electronic Engineering, Soongsil University)
Shin, Yo-An (School of Electronic Engineering, Soongsil University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.45, no.12, 2008 , pp. 13-19 More about this Journal
Abstract
In this paper, we propose a new CL-OSTBC (Closed Loop Orthogonal Space-Time Block Code) scheme for four transmit antennas and compare the scheme with existing closed loop schemes on the performance of BER (Bit Error Rate). In the proposed scheme, a transmitter receives channel feedback information and combines modulated symbols by the symbol combiner, and transmits the symbols encoded by the space-time block encoder. As a result, the proposed scheme achieves full-rate and maximal channel gains by more efficient utilization of the channel feedback information. Moreover, the scheme can reduce computation complexity by using a linear detector. Simulation results on the BER performance show that the proposed CL-OSTBC scheme outperforms existing CL-OSTBC schemes.
Keywords
STBC; STTD; MIMO; Closed Loop; Channel Feedback;
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