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MultipleSymbol Differential Detection for Unitary SpaceTimeFrequency Coding
Ziyan JIA Shiro HANDA Fumihito SASAMORI Shinjiro OSHITA
Publication
IEICE TRANSACTIONS on Communications
Vol.E93B
No.1
pp.9098 Publication Date: 2010/01/01 Online ISSN: 17451345
DOI: 10.1587/transcom.E93.B.90 Print ISSN: 09168516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiplesymbol differential detection, differential unitary spacetimefrequency coding, fading autocorrelation, OFDM, frequency selective fading, MIMO,
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Summary:
In this paper, multiplesymbol differential detection (MSDD) is applied to the differential unitary spacetimefrequency coding (DUSTFC) scheme over frequency selective fading multipleinput multipleoutput (MIMO) channels. The motivation of applying MSDD is to compensate for the performance loss of conventional (twosymbol observation) differential detection comparing with coherent detection, by extending the observation interval and considering the fading autocorrelations. Since the differential coding of DUSTFC can be performed in time or frequency domain, both the timedomain and frequencydomain MSDD are investigated. After calculating the frequencydomain fading autocorrelation, the decision metrics of MSDD considering appropriate fading autocorrelations are derived in time and frequency domain respectively. Bit error rate (BER) performances of the two kinds of MSDD are analyzed by computer simulations. Simulation results demonstrate that a considerable performance gain can be got by applying MSDD in both cases, and the transmit diversity gain can also be enhanced by applying MSDD. So that it is proved that full advantage of transmit diversity with DUSTFC can be taken by applying MSDD.


