采用直接FFT方法的MMSE-BLE算法研究及其性能仿真

Research on MMSE-BLE algorithm with direct FFT method and simulation of performance

介绍了最小均方误差线性均衡算法(MMSE-BLE)的原理,然后针对MMSE-BLE复杂度高的问题,提出一种用直接FFT方法来降低系统矩阵A求逆运算量的方法,研究表明:这种方法可以有效的降低MMSE-BLE算法的复杂度;并对采用直接FFT方法的MMSE-BLE进行性能仿真,比较了在不同的噪声协方差环境下的性能,证明采用直接FFT方法的MMSE-BLE能够兼顾多址干扰(MAI)和噪声的影响,有效克服噪声增强问题。

Introduces the Minimum Mean Square Error Block Linear Equalizer（MMSE-BLE） algorithm. Proposes the direct FFT method to reduce the Operand of the matrix inversion of system matrix A. The research indicates that the method can reduce the complexity of MMSE-BLE algorithm effectively. Simulates the performance of MMSE- BLE algorithm with direct FFT method. Compares the performance under different noise environments. It proves that MMSE-BLE algorithm with direct FFT method is able to proper attention to both MAI and noise and overcomes the noise enhancement question effectively.