chedingyouhua

通过计算短时信号熵，与阈值比较，得到判决结果。并采用顺序统计滤波器（最大值滤波器）对所得熵值滤波，提高判决精度。 能有效的分辨出语音信号和噪声信号，且通过后端平滑处理，使语音检测结果更加集中。(VAD based on short-time entropy, precision improved by using order-statistical-filter, VAD result is smoothed to make the result more accurate.)

To combat high PAPR, one intuitive solution is to adopt amplifiers to have larger trade-off range. However, these types of amplifiers are generally expensive and have low efficiency-cost, and therefore are of no practical use. On the other side, certain algorithms were introduced and been proved have a good performance of high PAPR reduction. Hence, in this thesis, some currently promising PAPR reduction methods are studied and compared. The performance of these reduction schemes are evaluated by using simulation software, Matlab. NUMERICAL PERFORMANCE EVALUATION OFPAPR REDUCTION TECHNIQUES IN MIMO OFDM WIRELESS COMMUNICATION SYSTEMS. Nice thesis paper with source code and simulation.

直扩信号的循环谱，不懂直扩信号不懂循环谱的可以看一看(Direct Sequence Spread Spectrum signal cycle, do not know do not know DSSS signal cyclic spectrum can take a look)

scatterbar就是画出三维散点柱状图，并且可以调整柱子的大小和颜色渐变，比原函数bar3更方便，更好用。(scatterbar is to draw three-dimensional scatter histogram, and can adjust the size and color gradients pillars, and more convenient than the original function bar3, easier to use.)

MUSIC算法。可进行波达方向估计（DOA），并进行高分辨率现代谱估计。(MUSIC algorithm. DOA can be estimated (DOA), and modern high-resolution spectral estimation.)

算法,用蒙特卡洛法实现对排队等待问题的计算机模拟。(mathlab program)

说明：  MATLAB的使用说明书、参考手册，以及一些例程的说明和实现(The use of MATLAB instructions, reference manuals, as well as some routine specification and implementation)

MATLAB对IMM算法的仿真，基于CV,CA模型(MATLAB simulation of the IMM algorithm, based on CV, CA Model)

很好用的FMCW雷达目标成像代码，有中文注释，适合学习(Good use of FMCW radar target imaging code, there are Chinese annotations, suitable for learning)

信号分为同相信号和正交信号，分别进行正交采样，降低采样率，搬移频带，完成采样。(Signal into in-phase signal and the quadrature signal, respectively, quadrature sampling, the sampling rate decrease, moving band, complete sampling.)