利用最优化理论实现QAM信号非线性编码的解码

Nonlinear Decoding for QAM Signal by Principle of Optimization

非线性编码与解码是现代数字通信对数字信号处理常用的一种技术.利用最优化原理,提出一种对QAM信号非线性编码进行解码的一种方法.该方法对于浮点运算和定点运算都是行之有效的,并且容易控制误差的范围.此方法已经成功的应用于商业化的通信产品设计中.

Nonlinear encoder and decoder are common techniques of digital signal processing that are widely used in digital communications. The amplitudes of the signal assigned nonlinear ratio relation is also used in QAM signal processing. Before QAM signal is transmitted, nonlinear encoding is done for QAM signal and the amplitudes of the QAM signal get new nonlinear relation. A simple method is proposed to do nonlinear decoding for QAM signal by using principle of optimization. This method has been successfully used for de- signing commercial communication products.