Spread-spectrum-communication

fft的matlab编程实现，能够进行2的整数次幂的点数的fft运算，采用基2算法(fft in matlab programming, can be integral power of 2 points in the fft computation algorithm using radix-2)

DOA估计的经典算法music算法的求根算法，在matlab中能够完全仿真。(DOA estimate of the classical music of the algorithm is extract roots algorithm, in matlab simulation can completely.)

大功率分布式发电系统通常采用三相逆变器并网，由于三相逆变器系统参数耦合，传统方法设计的控制器算法复杂。在d。q坐标系下为双模式三相并网逆变器的独市和并网模式建立了数学模型．采用新的解耦方法，依据独立和并网模式控制系统超调量越小，模式切换过程中被控量的波动越小。切换过程就越平滑的原则。完成了两种模式的控制器设计，即分别应用积分环节、比例环节即可将独立模式和并网模式整定成典型的二阶系统，控制器设计简单．能取得优良的动、静态特性。仿真与实验验证了设计方法的正确性和可行性。(It is necessary to research on three—phase grid-connected inverter which a8 an important part of distributed generation．The parameters of three—phase inverter are coupling．The traditional design algorithm of the controller is complicated．The mathematicM models of stand—alone mode and grid—connected mode are established in d，q fhme． Based on the principle that the lower overshoot of the controller system，the smaller fluctuation of the controlled vailables， the smoother in transfer，controllers of two modes are designed separately，as integral and proportional regulators are separately added to stand-alone mode and g而d—connected mode．The controller has good dynamic and static char— acteristics．Simulation and experimental results varify the correctness and feasibility of the proposed method．)

用MATlab实现的粒子群算法，比较简单，适用于刚学习粒子群算法的人，大家可以交流一下(MATlab particle swarm algorithm, relatively simple, suitable for people new to the study of the particle swarm optimization (pso) algorithm, we can discuss)

matlab 用于对航行器导航算法仿真程序(Simulation programing of vehicle navigation use matlab)

2D_ watermarking source image to wartermarking image

说明：  OFDM系统中时域均衡的仿真和结果分析，先对搭建的最基本的OFDM系统性能进行仿真分析，然后对在多径信道下的OFDM系统性能进行仿真分析，最后对MMSE算法进行仿真分析。(OFDM system, time domain equalization and results of the simulation analysis, the first of the basic structures of the simulated OFDM system performance analysis, and multi-path channel in the OFDM system performance under simulated and analyzed, the final simulation of the MMSE algorithm.)

基于matlab编写的神曲——最炫民族风(Based on matlab to write the Divine Comedy- and most unusual national wind)

National Semiconductor NS87560UBD Super IO controller used in HP [BCJ]x000 workstations.

维特比译码程序,matlab源程序，卷积码编码及译码程序(Viterbi decoding procedures, matlab source code, convolution coding and decoding procedures)