信源编译码仿真，信道编译码仿真，数字调制解调仿-Simulation of the source codec, channel coding simulation, digital modulation and demodulation simulation

QPSK调制后产生QPSK信号，QPSK信号分别通过AWGN信道、Rayleigh衰减信道和Rician衰减信道，分别通过QPSK解调出数字信号，通过输入与输出数字信号的对比计算出仿真过程中的传输误比率，并将其与各衰减信道的理论误比率进行对比-Generate QPSK signal QPSK modulation, QPSK signals through AWGN channel, Rayleigh fading channel and Rician fading channel, resp

为作业最终的仿真结果与分析 PL_free.m：free space path loss model PL_logdist.m: log-distance path loss model PL_lognorm.m: log-normal shadowing path loss model plot_PL_general.m: plot the figures itum.m: ITU M.1225 vehicular-B(120km/hr) channel model AW

基于matlab 仿真在不同信道环境下OFDM传输的 程序百分百可以运行 供大家学习参考使用-Matlab based simulation can be run for everyone at different OFDM transmission channel environment learning program for reference hundred percent