The invention provides a variable step size gradient vector based on LMS channel equalization method, the first parameter P is obtained according to the steady error of the system requirements, and then calculate the amount of smoothing the gradient vector according to the error signal, according to the amount of smoothing parameter P and gradient vector to obtain the time-varying step, according to the error signal and time variable step calculated equalizer coefficient, the process is repeated until the end of the training process, the equalizer coefficient is set to the right coefficient of current equalizer. The invention has the advantages of easy realization, faster convergence speed and smaller steady-state error, and fast obtaining of the optimum weight coefficient of the equalizer, so that the equalizer achieves a fast adaptive equalization effect.
【技术实现步骤摘要】
【技术保护点】
1.一种基于梯度向量的变步长最小均方信道均衡方法,其特征在于,该方法具体包括以下步骤:步骤一、根据通信均衡系统要求的稳态误差指标Jex,Grad(∞),设置参数P:(math)??(mrow)?(mi)P(/mi)?(mo)≈(/mo)?(mfrac)?(mrow)?(mn)2(/mn)?(msub)?(mi)J(/mi)?(mrow)?(mi)ex(/mi)?(mo),(/mo)?(mi)Grad(/mi)?(/mrow)?(/msub)?(mrow)?(mo)((/mo)?(mo)∞(/mo)?(mo))(/mo)?(/mrow)?(mrow)?(mo ...
【技术特征摘要】
【专利技术属性】
技术研发人员:李宁,张勇刚,刘利强,周卫东,高峰,刘厂,
申请(专利权)人:哈尔滨工程大学,
类型:发明
国别省市:93
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