一种xDSL基带传输系统的自适应频谱优化方法

An adaptive optimized spectrum shaping method for baseband xDSL transmission

本文提出了一种基带xDSL传输系统的自适应频谱优化方法。针对不同DSL线路信道特性和信道加性噪声特性的不同 ,该系统自动优化得到不同的发送滤波器 ,以对发送基带信号进行频谱修正 ,获得最优的传输性能及频谱兼容性。与目前的固定频谱修正方法相比 ,该系统对不同的信道和噪声背景具有更好的适应性且能获得 2 .5dB以上的噪声比增益。

An adaptive spectrum shaping method for baseband xDSL transmission is proposed in this paper.Corresponding to different channel and noise characters,the system using different optimized filters to shape transmitting spectrum in order to get better spectral compatibility and large transmission capacity.Comparing to the fixed spectrum shaping method,the optimized method can get 2.5dB extra performance margin and is more suitable for the variety of channel and noise environment.