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正交空时分担编码(OSTBC)技术可以提高信道容量和误码性能,准静态平坦衰落信道和时变平坦衰落信道下正交空时分组编码率的信号检测技术得到广泛研究。利用正交频分复用技术(OFDM),研究了时变多径衰落信道下OSTBC-OFDM的信号检测方法,提出了一种能够有效利用无线信道的多径传播效应的发射天线数目等于4的OSTBC信号检测算法,仿真结果表明,发射天线书等于4,接收天线数等于2时,与已有信号检测算法相比,提出的算法有4.5dB性能增益。
OSTBC technology can improve channel capacity and error performance, and the signal detection techniques of orthogonal space-time block coding rate are widely studied in quasi-static flat fading channel and time-varying flat fading channel. Orthogonal Frequency Division Multiplexing (OFDM) is used to study the signal detection method of OSTBC-OFDM in time-varying multipath fading channels. A new method is proposed to detect the signal of multipath fading in wireless channel. OSTBC signal detection algorithm. The simulation results show that the proposed algorithm has a 4.5dB performance gain compared with the existing signal detection algorithms when the number of transmitting antennas is equal to 4 and the number of receiving antennas is equal to two.