Two dimensional space-time pilot symbol assisted demodulation over frequency nonselective Rayleigh fading channels

Pilot symbol assisted modulation (PSAM) is known to provide good performance in estimating the multiplicative distortion of fading channels. The 2-D space-time PSAM is derived and analyzed in this paper by applying the multiple-antenna reception at the base station. The interrelationship between temporal and spatial correlations is shown to provide better channel information than using the temporal correlation solely. The average mean square error (MSE) per antenna and the binary phase shift keying (BPSK) bit error probability (BEP) are used to characterize the performance analytically and draw comparisons with the traditional 1-D PSAM. When 5 antennas are used, the 2-D space-time PSAM has better average performance over the l-D PSAM for about 4 dB of MSE or 1 dB of BPSK BEP.