分析了最小二乘解产生偏差的原因,推导出了最小二乘解偏差项的数学表达式。提出了一种基于瑞利商的变步长总体最小二乘求解方法。仿真试验表明,总体最小二乘算法的性能优于加权递归最小二乘算法,是一种适用于输入信号端含有噪声的自适应信道均衡算法。 The reason of the deviation of the least squares solution is analyzed and the mathematical expression of the least square solution term is deduced. A total Least squares solution method based on Rayleigh quotient is proposed. The simulation results show that the performance of the overall least squares algorithm is better than weighted recursive least squares algorithm, which is an adaptive channel equalization algorithm which is suitable for the input signal with noise.