这篇实验报告阐述了无线通信系统仿真的原理。主要完成两个任务，任务一是BPSK调制在AWGN信道和在rayleigh信道下的性能比较，任务二 CDMA扩频多用户系统。这篇报告介绍了相关原理，并且在附录上有matalb源代码及注释。-This report describes the experimental wireless communications system simulation theory. Completed two major tasks, First, the task BPS

C and MATLAB implementation for LDPC encoding and decoding-Overview of what is provided WiFi (IEEE 802.11n) LDPC code construction Encoding by back-substitution for WiFi LDPC codes Iterative belief propagation (BP) Decoding (including