STBC-MIMO-OFDM系统一种次优混合发射天线选择算法

MIMO systems with multiple-input multiple-output antennas can cause a high cost and complexity. Focusing on this problems, a suboptimal hybrid transmit antenna selection algorithm in OFDM systems is proposed in the study of sub-carriers based antenna selection algorithm. The proposed algorithm firstly select one antenna for all sub-carriers based on maximizing the minimum SNR, and then select the best among the remaining antennas for each subcarrier based on maximizing the SNR. Theoretical analysis and simulation results show that the BER performance of the proposed algorithm is very close to the optimal per-tone selection with the same diversity gain and low complexity in the case where the number of RF chains is small.