该程序实现了使用非线性压扩函数对OFDM信号进行压扩变换，并对其在AWGN下的误码性能进行了测试。-This manuscr ipt exploit the nonlinear companding function to reduce the PAPR in OFDM system, and test the BER performance in AWGN channel

Multivariate least squares fitting method of nonlinear equations, Using weighted model nodes in the network strength and weight are power law distribution, Virtual power wireless sensor network coverage.