分析了在超宽带通信系统中的扩频干扰，并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct sequence spread spectrum (DSSS) receiver is analyzed. Two popular UWB modulation schemes, the time hopping pulse position modulat

多径信道下的采用rake接收机ppm-th调制和解调及误比特图仿真-Multipath channel the rake receiver ppm-th modulation and demodulation and bit error pattern simulation