Exact BER analysis for orthogonal space-time block codes on arbitrary fading channels with imperfect channel estimation

In this contribution, we provide an exact bit error rate (BER) analysis of orthogonal space-time block codes over arbitrarily distributed (possibly correlated) block fading channels with imperfect channel estimation. The transmitted symbols belong to a PAM or QAM signal constellation. With N<inf>t</inf> and N<inf>r</inf> denoting the number of transmit and receive antennas, respectively, the resulting average BER can easily be written as an expectation over 4N<inf>t</inf>N<inf>r</inf> real-valued random variables, but the computation time needed for its numerical evaluation increases exponentially with N<inf>t</inf> and N<inf>r</inf>. We provide a methodology that allows an efficient numerical evaluation of the exact BER with a computation time that is essentially independent of N<inf>t</inf>N<inf>r</inf> and the signal-to-noise ratio.

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