MATLAB

方向图 包括 线阵 面阵 圆阵 有详细注释(Pattern including circular array of linear surface array detailed notes)

This file containing a source code for Frequency Hopping Spread Spectrum in Matlab. Also this file has some guide files.

This matlab code describes soft demapper (soft bit) for different modulation types: BPSK, QPSK, PSK 8, QAM 16, QAM 64, which are considered for turbo encoding/decoding. And simulation results are also presented.

非常好用，是一个在rayleighchan下OFDM检测的源代码，希望对大家有帮助(Very easy to use, is a next OFDM detection rayleighchan source code, in the hope that everyone has to help)

说明：  计算电力系统输电网潮流数据的算法 潮流计算(Algorithm for calculating power flow data of power transmission network)

说明：  matlab code OFDM SC FDMA OFDMA PAPR matlab code OFDM SC FDMA OFDMA PAPR matlab code OFDM SC FDMA OFDMA PAPR matlab code OFDM SC FDMA OFDMA PAPR

Rayleigh_Channel based in Jakes model

用来处理电磁波计算，在三维情况下仿真分析(fdtd 3d simulation)

由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)

MAQ-N with N in(1,2,3,4) modulation implementation code devlopped to simulate this numeric modulation with constellation and BRE (bit rate error) (french comments may be annoying ) whith a graphique interface to simulte sms transmission end reception with zeropading