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In this work a space-frequency block coding (SFBC) system is considered, which is compliant to the Long-Term-Evolution (LTE) specification. The Cramer-Rao bound (CRB) for the mimimum mean-square error (MMSE) of the channel estimator for an SFBC receiver is calculated comparing optimum versus robust Wiener interpolation. Further a lower bound on the bit error ratio (BER) of a binary phase-shift keying...
In this paper, we analyze the impact of imperfect channel estimation on the performance of pilot symbol assisted modulation (PSAM) used in a relay communication system with distributed space time block code (STBC) and amplify-and-forward protocol. We derive correlation coefficients between the channel coefficients and their estimates when the relay-to-destination link is either non-fading or fading,...
In the existing papers on cooperative diversity, the fading channels are idealistically assumed to be Rayleigh fading channel. Taking into account the realistic propagation environments in the presence of spatial fading correlation, the performance of cooperative protocols using distributed space-time block code (DSTBC) in the two-ring scattering model is analyzed. The time division multiple access...
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