Robust transmit processing for BICM-OFDM systems
IEEE Transactions on Wireless Communications
BER analysis for MIMO-OFDM beamforming with MRC under channel prediction and interpolation errors
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
BER analysis of direct conversion OFDM systems with MRC under channel estimation errors
IEEE Communications Letters
Adaptive modulation for MIMC) systems with channel prediction errors
IEEE Transactions on Wireless Communications
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Significant throughput improvements can be obtained in multiple-input multiple-output (MIMO) fading channels by merging beamforming at the transmitter and maximal ratio combining (MRC) at the receiver. In general, accurate channel state information (CSI) is required to achieve these performance gains. In this paper, we analyze the impact of channel prediction error on the bit error rate (BER) of combined beamforming and MRC in slow Rayleigh fading channels. Exact closed-form BER expressions are obtained in terms of elementary functions. Numerical results show that imperfect CSI causes little BER degradation using channel prediction of moderate complexity.