xihua

双音多频 用matlab模仿电话机拨号，用到语音处理及合成各方面知识(DTMF telephone dial-up using matlab to imitate, to use speech processing and synthesis of knowledge)

给出了不同分割数量V条件下的系统的PAPR性能，分割方法为随机分割，辅助相位集合的相位数P=4(即 可选择的范围为{0,π/2,π,3π/4})，N=128，子载波采用QPSK调制，仿真的OFDM符号数为1000个。(V gives the number of different partitions of the system under PAPR performance of random segmentation segmentation, the number of secondary phase of the phase set P = 4 (to select the range {0, π/2, π, 3π/4} ), N = 128, sub-carrier using QPSK modulation, simulation of the OFDM symbol number 1000.)

LTE-A系统中载波聚合介绍，初学者适合理解其概念(Carrier aggregation for LTE-advanced mobile communication systems.pdf)

TDA8271的C驱动，NXP Digital TV Tunner(TDA8271 C-drive, NXP Digital TV Tunner)

说明：  MATLAB 有哪些主要功能? 初学者应如何利用这一数学软件去解决自己的 问题？要解决这些问题，应该尽快熟悉一些常用命令，了解它们的功能和使用 格式。(What are the main functions of MATLAB? Beginners how to use the mathematical software to solve their own problems? To solve these problems, should be familiar with some commonly used command as soon as possible, understand their function and use format.)

说明：  EMD的子程序，刚刚忘记了不好意思，真的不是为了刷程序数量(EMD of the subroutine, just forget I am sorry, do not amount to brush program)

GPS, GLONASS, M-scripts, Russian language

自己编写的读YUV格式视频的程序,简单好用,而且附有国际标准测试序列hal_cif.yuv.(Write your own read YUV format video program, easy to use, and with the international standard test sequence hal_cif.yuv.)

通信系统中常用的三种基本信号：SSB,DSB,AM。可查看其波形及相应的图像。(Communication systems commonly used in three basic signals: SSB, DSB, AM. To see the waveform and the corresponding images.)

屏幕中呈现正玄光栅，手动控制节奏，正玄掩蔽(present grating on the dispaly )