多径理解1,理解多径对信号的影响 ,-understanding of a multi-track, multi-path understanding of the impact of the signal and understanding of multi-path signals,

使用半分析半仿真的方法进行QPSK系统仿真，分别计算在高斯信道、瑞利衰落信道、莱斯信道环境下的系统误比特率（BER）-Simulate a QPSK system(without coding), write a summary report in MS Word file containing the following items together with the necessary analysis & discussions. system diagram error per

仿真OFDM传输系统，仿真不同的保护间隔的ISI影响，信道为AWGN或多径瑞利衰落信道。-Simulation OFDM transmission system, ISI impact simulation of different guard interval, the channel is AWGN or Rayleigh fading channels.

当有噪声时，数字波束形成仍可以将来自不同方向的信号进行分辨，要注意噪声的大小影响波束的形成-When there is noise, digital beamforming signals can still be distinguished from different directions, to pay attention to the size of the impact beam is formed of the noise