qam

iterative decoding for ldpc

射线追踪,包含了起点和终点的射线函数，对于地震传播研究具有重要意义！(Raytracing in a v(z) world. The toolbox contains functions forshooting fans of rays and functions for tracing rays with specific start and end points. General multi-bounce rays with any number of mode conversions can be traced. Automatic routines for P-P and P-S primaries in shot-gather geometry are provided for convenience. Any recording geometry can be used but most functions vectorize (e.g. are most efficient) for shot-gather geometry. Only traveltimes and rayparameters are detemined, not amplitudes. In these routines, the velocity models should be considered as "background" models. This means that the depths at which flections and mode conversions occur are dependent of the depths given as layer boundaries in the velocity models. Velocity models are specified by a vector of velocities and a same-size vector of depths. The j th velocity is in effect from the j th to the j+1 th depth. The bottom of the model is assumed at infinite depth. Thus v=5000 and z=0 specifies a cons)

用奇异值分解+AR的现代谱估计方法对信号的功率谱进行估计。(Using singular value decomposition AR+ modern spectral estimation method for estimating the power spectrum of the signal)

差分编码的实现、信噪比、误码率等等的实现，并且有截图，比较详细的资料。(Differential encoding implementation, SNR, BER, etc. to achieve, and there are shots, more detailed information.)

通过此程序仿真数字基带传输系统的基带信号波形。(Simulation of this process through the digital base-band transmission systems, base-band signal waveforms.)

说明：  simulink工具箱的常见问题分析以及开发过程详解，初学适用(simulink toolbox of common problems and the development of Elaboration on the Course, for beginner)

模拟GPS喊噪声的信号并利用卡尔曼滤波进行GPS去噪处理，(Simulated GPS signal to noise shouting and using the GPS Kalman filter denoising,)

the graphs where you can find how the function looks like - sinus

matlab求解半波天线,矩量法解双位方程，求直线天线表面电流分布 (matlab--antenau=u+I1(1,m).*sin(thita(1,n)).*exp(j*k0*z(1,m).*cos(thita(1,n))).*L/(N*lamda))

Local Histogram Equilizaion, its input is the mask size and returns the equilized image buffer