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2012•Computer Engineering and Applications JournalOpen access

Research on design of full-rate and full-diversity quasi-orthogonal space-time block code

Wenqiang Guo

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Abstract

Since Alamouti proposes the Space-Time Block Code(STBC),the constructing methods of the STBC are researched widely.The studies show that the complex orthogonal STBC can not achieve full-rate for those systems with more than two receive antennas.The quasi-orthogonal STBC can get full-rate,but loses part of full-diversity.A full-rate full-diversity STBC,according to the rank criterion,is obtained by matrix rotation processing on the conventional quasi-orthogonal STBC.The numerical simulation results show that the BER performance of the full-rate full-diversity QOSTBC is improved 4 dB at least.

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What this paper is about

Since Alamouti proposes the Space-Time Block Code(STBC),the constructing methods of the STBC are researched widely.The studies show that the complex orthogonal STBC can not achieve full-rate for those systems with more than two receive antennas.The quasi-orthogonal STBC can get full-rate,but loses part of full-diversity.A full-rate full-diversity STBC,according to the rank criterion,is obtained by matrix rotation processing on the conventional quasi-orthogonal STBC.The numerical simulation results show that the BER performance of the full-rate full-diversity QOSTBC is improved 4 dB at least.

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Available abstract

Since Alamouti proposes the Space-Time Block Code(STBC),the constructing methods of the STBC are researched widely.The studies show that the complex orthogonal STBC can not achieve full-rate for those systems with more than two receive antennas.The quasi-orthogonal STBC can get full-rate,but loses part of full-diversity.A full-rate full-diversity STBC,according to the rank criterion,is obtained by matrix rotation processing on the conventional quasi-orthogonal STBC.The numerical simulation results show that the BER performance of the full-rate full-diversity QOSTBC is improved 4 dB at least.

Key concepts: Space–time block code, Block code, Full Rate, Computer science, Code (set theory), Block (permutation group theory), Diversity (politics), Algorithm

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