double_pwm_inverter

基于灰色理论的粒子群优化算法，在matlab7上进行了试用(Based on Grey Theory PSO, a trial on the matlab7)

说明：  LTE系统下行链路MIMO技术中的开环复用(LTE downlink MIMO technology in the open-loop reuse)

LTE 系统级仿真 希望大家多多指教！！！！！(LTE SYSTEM LEVEL)

这是一个有关PI模型系统辨识的MATLAB程序，并附有MATLAB仿真30个案例以便于学习(This is a PI model identification program)

LTE下行链路发射分集仿真，仿真配置：16QAM调制、1/3码率Turbo编码、10MHz带宽、每个子帧一个PDCCH符号、单码字、8次迭代Turbo译码，每次处理1000万比特用户数据、早期终止机制、MMSE（最小均方误差）MIMO接收器，PDSCH发射端进行发射分集预编码。信道模型是LTE-MIMO信道附加AWGN信道。收发两端采用的双天线配置，天线相关性为中等。(LTE downlink transmit diversity simulation configuration: 16QAM modulation, 1/3 Turbo coding rate, 10MHz bandwidth of each sub-frame a PDCCH symbol, single code word, 8 iterations Turbo decoding, each processing 10 million bits of user data, early termination mechanisms, the MMSE (minimum mean square error) the MIMO receivers, a PDSCH transmitting terminal transmit diversity precoding. Channel model is LTE-MIMO channel additional AWGN. Dual antenna transceivers at both ends of the configuration, the antenna correlation is moderate.)

这个方法有两个好处。 （ a ）虽然只是一个半径差逼近，很容易找到最高在一个小蓄电池，因为通过降低 隐平滑做的蓄电池。（ b ）在同一时间处理时间搜索减少 (Pattern Recognition and Image Procesing Group. The size of the accumulator is varied as hierarchical voting is performed. This has two advantages. [a] While the radius is only a poor approximation, it is easier to find the maximum in a small accumulator and because by means of the downsampling implicit smoothing is done to the accumulator. [b] At the same time processing time for the search is reduced.)

脉冲成形中的升余弦脉冲响应，具有零ISI胡脉冲波形。(The raised cosine pulse shaping impulse response, with zero ISI Hu pulse.)

介绍了用MATLAB模糊逻辑工具箱设计模糊控制器，并用SIMULINK仿真的一般方法。(MATLAB FUZZY )

介绍了通信系统中幅度调制的基本例子，将信息加载到幅度参量中。(The basic example of amplitude modulation communication system, the information will be loaded into the magnitude of the parameters.)

说明：  海浪模拟 改变频率及其他参数输入得到不同的海浪谱(Common function set of MATLAB simulink)