In this paper, the random coding exponent for fast fading multi‐input multi‐output channel equipped with automatic repeat request (ARQ) protocol is derived. This exponent can be used to express the probability of error as a function of the data rate and codeword length. This measure provides an intuition into a fundamental trade‐off between communication reliability, information rate and delay. This paper shows that using multiple antenna and ARQ techniques are promising tools for communication over fast fading channels.
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Ebrahimzad et al. (2011) studied this question.
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