Polar_HW(1)

说明：  fsk信号的调制与解调，通信领域其他各种调制方式可以参考此文件稍作修改(fsk signal modulation and demodulation, modulation communications can refer to various other minor modifications to this document)

三电平原理仿真，请根据您的实际使用情景进行修改(Three-level principles of simulation, please be modified according to usage scenarios)

运用ccs实现希尔伯特变换，还有matlab产生辅导(Hilbert transform)

产生北斗卫星伪随机码程序，利用该程序可以产生任意一颗北斗卫星的C/A码序列。(Pseudo-random code generation Beidou satellite program, use the program can generate any one Beidou satellite C/A code sequence.)

中文教程。本教程提供了使用MATLAB的实践性指导，它基于MATLAB6.0版，内容由浅入深，特别是本书对每一条命令的使用格式都作了详细而又简单明了的说明，并配备了例题加以说明其用法，因此，对于初学者自学是很有帮助的；同时，又对数学中的一些深入问题如数值分析、稀疏矩阵、优化理论以及模糊数学等问题进行了较为详细的论述，因此，该书也可作为科技工作者的科学计算工具书。(Chinese tutorial. The Guide provides practical guidance to the use of MATLAB, which is based on MATLAB6.0 edition, the content of easy-to-digest, especially the book on the use of each command formats are explained in detail and simple description and sample questions to be equipped with its usage, therefore, self-study is very helpful for beginners At the same time, some of mathematics in depth issues such as numerical analysis, sparse matrix, optimization theory and fuzzy mathematics, etc. more detail, therefore, the book can also be used as science and technology workers in scientific computing tool.)

m序列的matlab实现，m序列的matlab实现(Implementation of m sequences)

说明：  DSTBC源码，均可以运行成功，对于在研究DSTBC的朋友会很有帮助，我也希望我能得到其他朋友的帮助，站长手下留情，(DSTBC source can run successfully for the study would be helpful DSTBC friends, I also hope that my other friends can get help, head lenient,)

电话拨号音的合成与识别 基于对电话通信系统中拨号音合成与识别的仿真实现，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。使其对电话通信系统拨号音的合成与识别有个基本的了解。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程。(Synthesis and recognition telephone dial tone Based on telephone communication system dial tone Simulation synthesis and recognition, mainly related to the basic principles of the main methods telephone dial tone synthesis and recognition, using MATLAB software and the FFT algorithm for synthesis and recognition telephone communication system dial tone. And further use of MATLAB graphical user interface is simple and intuitive GUI making analog interface. Synthesis and recognition make telephone communication system dial tone have a basic understanding. Can be different the fundamental frequency of matrix synthesis 0 9 dial tone different keys, and can be correctly identify different dial tone, dial tone achieved by the parsed telephone number of processes.)

非线性最小二乘优化问题，这里提供算法，供大家参考(Nonlinear least squares optimization problem, here are algorithms for reference)

说明：  利用FFT对原信号进行变换，然后在频域进行处理，再使用IFFT进行反变换，达到滤波的目的。(use FFT and IFFT to filter)