a simulink(MATLAB) file for decreasing noise....it removes the noise but adds musical noise

qpsk transmitter a receiver, in design to simulink with AWGN,noise.

基于OFDM技术的无线局域网系统设计，要求按照IEEE802.11a协议的要求，使用Simulink构建发送端和接收端。首先在高斯噪声信道的要求下，产生它特有的帧格式。-OFDM-based wireless LAN system design technology requirements in accordance with the requirements of IEEE802.11a protocol, using Simulink to build the transmitter an

Convert matrix mimicking of VENTURINI modulation algorithm using matlab / simulink noise voltage-compensated, by the mathematical equations of the first parameter input voltage and voltage parameters to calculate the ratio target communication, remem