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On Maximum Diversity Order over Doubly-Selective MIMO-OFDM Channes  

Yang Qinghai (Graduate School of Information Technology and Telecommunication, Inha University)
Kwak Kyung Sup (Graduate School of Information Technology and Telecommunication, Inha University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.7A, 2005 , pp. 628-638 More about this Journal
Abstract
The analysis of maximum diversity order and coding gain for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems over time-and frequency-selective (or doubly-selective) channels is addressed in this paper. A novel channel time-space correlation function is developed given the spatially correlated doubly-selective Rayleigh fading channel model. Based on this channel-model assumption, the upper-bound of pairwise error probability (PEP) for MIMO-OFDM systems is derived under the maximum likelihood (ML) detection. For a certain space-frequency code, we quantify the maximum diversity order and deduce the expression of coding gain. In this wort the impact of channel time selectivity is especially studied and a new definition of time diversity is illustrated correspondingly
Keywords
Space-freouency code; MIMO-OFDM; spatial correlation; doubly-selective channel;
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