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针对 DMT ADSL(DMT线路码非对称数字用户环路 )传输系统发送信号幅值尖峰问题，提出了一种降低发送信号最大峰值同时又不损失系统传送信息的非线性优化映射方法。通过最优化方法合理地设计了一组可逆映射器，该方法比目前 ADSL系统的硬限幅方法能较大幅度地压缩系统的动态范围或在相同的动态范围下获得更好的传输性能。
Aiming at the signal spike of DMT ADSL transmission system, a nonlinear optimization mapping method is proposed to reduce the maximum peak of the transmitted signal without losing the information transmitted by the system. A set of reversible mappers is designed reasonably by the optimization method. Compared with the hard limiting method of ADSL system, this method can greatly compress the dynamic range of the system or get better transmission performance under the same dynamic range.