| In this thesis, we study the performance of orthogonal space-time block codes (STBCs) over Rayleigh fading channels with receive antenna selection. For a given number of receive antennas M, we assume that the receiver uses the best L of the available M antennas, where, typically, L ≤ M. The selected antennas are those that maximize the instantaneous received signal-to-noise ratio (SNR). In our analysis we consider (1) orthogonal STBCs only, and (2) concatenated channel coding with STBCs. For both coding schemes, we consider uncorrelated and spatially correlated fading channels. We derive explicit upper bounds on the bit error rate (BER) for the above schemes with antenna selection. We also derive exact analytical results for special cases. Our results show that the diversity order, with antenna selection, is maintained as that of the full complexity system, i.e., when the receiver uses all the available antennas, whereas the deterioration in SNR due to receive antenna selection is upper bounded by 10 log10(M/L) dB. We also present numerous examples that validate our results. |
