DF_fading

64QAM调制,采用硬件语言verilog实现,其中调用了DDS的IP核(64QAM modulation, using language verilog hardware implementation, which is called the IP core of the DDS)

在发射端发射大时宽、带宽信号，以提高信号的速度测量精度和速度分辨力，而在接收端，将宽脉冲信号压缩为窄脉冲，以提高雷达对目标的距离分辨精度和距离分辨力。(In order to improve the speed measurement accuracy and speed resolution of the signal at the transmitter, the wide pulse signal is compressed into a narrow pulse at the receiving end to improve the range resolution and range resolution of the radar.)

说明：  重排二次型时频分布应用例程，对信号进行频率归一化处理，时频分布和重排(Rearrangement of quadratic time-frequency distribution of the application of routine, the signal frequency normalized, time-frequency distribution and rearrangement)

关于泄漏同轴电缆性质，参数的仿真，基于matlab。包括表面波、单模、多模辐射，辐射角，辐射方向图等等。上传者原创程序，专业型很强，非常稀少。(Leakage coaxial cable on the nature of the simulation parameters, based on matlab. Including surface wave, single-mode, multi-mode radiation, the radiation angle, radiation pattern and so on. From original procedure, highly professional, very scarce.)

说明：  除了蚁群算法，可用于PID参数优化的智能算法还有很多，比如遗传算法、模拟退火算法、粒子群算法、人工鱼群算法，等等。(In addition to ant colony algorithm can be used to optimize the PID parameters there are many intelligent algorithms, such as genetic algorithms, simulated annealing algorithm, particle swarm optimization, artificial fish-swarm algorithm, and so on.)

一种基于认知无线电的自组网多信道MAC协议，对自组网多信道的MAC协议进行补充(Cognitive radio based multi-channel MAC protocol in MANET, multi-channel MAC for ad hoc networks to supplement agreement)

matlab编写的turbo码示例程序，用于通信系统的信道编解码仿真(matlab prepared turbo code sample procedures for communication system simulation channel codec)

代码为实现EM算法进行ofdm调制信号进行信道估计的仿真代码(source codes simulate the channel estimation using em algorithm)

电力系统14节点模型，用于计算电力系统潮流计算(Power System 14 node model, used to calculate the power flow calculation)

DF中继系统衰落情况下的最大比合并误码率仿真(Maximum ratio combined bit error rate simulation in DF relay system fading)