STBC for wireless communication: a least square interpretation

摘要

Recently, Space-time block code (ST BC) has been paid much attention due to its simplicity and well performance. For wireless downlink transmission, this means that the communication quality is improved without increasing both the complexity of receiver and the number of receive antennas. Instead of applying maximum likelihood decoding (MLD), this paper will use the least square decoding (LSD) to interpret the decoding structure of STBC. Furthermore, the performances of STBC-based transmit diversity systems in slowly Rayleigh fading channel are evaluated by theoretical derivation and computer simulation, as well. It is shown that the theoretical curves and simulation results are matched with each other. By the least square interpretation, the STBC-based transmit diversity system is more concisely realized.