uwb基础源码，包括uwb信号产生、各种调制方法、信号功率谱密度频谱特性、以及信道仿真等。-uwb basis of source, including uwb signal generator, various modulation methods, the signal power spectral density spectrum, and channel simulation.

用于计算待测信号的功率谱密度，方法是通过计算自相关函数的傅立叶变换。-Used to calculate the power spectral density of the test signal, the method by calculating the autocorrelation function of the Fourier transform.

BER of QAM at Different bitrates, The resulting bit error rate the Monte Carlo simulation for the different QAM bit rates (4 to 1024) have been exported to the Matlab workspace as a vector of error values for each bit rate versus the noise powe