计算功率谱（或互谱）的matlab子程序

说明：  主成分分析法主要算法程序, 里面有详细解释.(Principal component analysis procedure main algorithm, which has a detailed explanation.)

BPSK MATLAB仿真程序。。。。。。。。。。。。不包括误码率计算(BPSK MATLAB simulation program............ Does not include bit error rate)

This program uate BER performance of OFDM systems in AWGN environment. Basically, modulation and demodulation function is supported BPSK to 64QAM.

一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。(A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.)

最短路径问题（包括Floyd算法和避圈法）的matlab程序，较实用(Shortest path problems (including Floyd algorithm and avoid the circle method) matlab procedures, more practical)

说明：  非线性估计,还是很有用的，自己用过的 和大家分享了(Nonlinear estimation)

Spectrum Sensing using ED for DSB signal

Newmark 算法案例，可以对初学者起到帮助，适用于结构力学(Newmark algorithm cases, can help beginners play for structural mechanics)

本程序计算金属包覆平板波导TE模等效折射率，然后计算其光场分布(This program calculates metal-coated plate waveguide TE-mode effective refractive index, and then calculate the optical field distribution)

在通信中的仿真，很有用，涉及到通信技术中关键技术的仿真(In communication simulation, very useful, related to communication technologies in key technology simulation)