Analytical performance of MIMO-SVD systems in Ricean fading channels with channel estimation error and feedback delay

This paper analyzes bit error rate (BER) and outage probability of singular value decomposition-based multiple-input multiple-output systems with channel estimation error and feedback delay over uncorrelated Ricean fading channels. By utilizing marginal unordered and ordered eigenvalue distributions of complex noncentral Wishart. matrices, we derive exact closed-form expressions on the average system performance and high signal-to-interference-plus-noise ratio (SINR) approximations on the individual eigen-subehannels, respectively, under the assumption of equal power allocation. Our expressions apply for various modulation formats and arbitrary numbers of transmit and receive antennas. Our results show that in low-to-moderate SINR regimes, both the BER and the outage probability increase with channel estimation error, feedback delay and the Ricean K-factor at a polynomial rate that is inversely proportional to the difference between the numbers of transmit and receive antennas. We also show that, with channel estimation, error and feedback delay, the diversity orders of the BER and outage probability are zero and an irreducible error floor exists at high SINR.