基于STBC的通信技术的性能优化

为了解决信号传输的主要问题,根据空时分组码(STBC)与垂直分层空时码(V-BLAST)二者各自的性能特点,信道能依据接收端欧氏距离平方最小的准则,选择较优的发送端传输方式,以适应信道的变化。仿真验证:自动更换方案误码率性能最好。接着从矩阵分解的角度,通过与常用检测算法比较可知:GDM-VBLAST扩展信道检测算法,降低MIMO-OFDM通信系统性能的误码率,也能够消除一定的噪声干扰。

Performance Optimization of MIMO-OFDM Communication Technology based on STBC

In order to solve the main problem in signal transfer and based on the performance characteristics of STBC and vertical BLAST, channels could automatically change the transmitting pattern between STBC and V-BLAST, while the receiving end makes its own performance estimation, in accordance with the minimum squared Euclidean distance and chooses the optimal mode adaptable to the channel changes. Simulation results indicate that the automatic replacement scheme is of the best performance. And then, from the perspective of decomposition factorization, the comparison with several commonly-used detection algorithms shows that the GDM-VBLAST detection algorithm combined with extended channel idea could bring about fairly high MIMO-OFDM communication system performance, reduce the error bit rate of overall system, including the noise interference in low SNR.