matlab

一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 ( a OFDM symbol 128 effective symbols, insert 128 virtual sub-carrier symbol rate (i.e. valid data rate), and fsymbol sending rate (need to include virtual sub-carrier) 2fsymbol input data need 2 times the sending data rate for interpolation, realize a timing tracking, namely fsymbol sampling rates four times the modulation signal OFDM symbol Nfft = 128 points a OFDM symbol of data points Nfft* 2 = 256, Guard Interval point = Ng* 2 = 64 )

Spatial Complex, 2*2 MIMO, 2 transmitter 2 reciever, use Zero Force techniques.(Spatial Complex, 2* 2 MIMO, 2 transmitter 2 reciever, use Zero Force techniques.)

本代码是基于MIMO-OFDM系统下做的信道估计技术的研究。MIMO,OFDM是4G的核心技术，两者相结合的估计算法也是现在研究的热点。本代码包括几种核心的估计算法并可直接仿真出结果。(The code is based on MIMO-OFDM system channel estimation to do research. MIMO, OFDM is the core of 4G technology, a combination of both the estimation algorithm is now a hot research. The code includes several core estimation algorithm and simulation results directly.)

说明：  经典的SIFT算法，第一步，选择感兴趣的点；第二步，对感兴趣点进行筛选，确定关键点；第三步，为关键点分配方向；第四步，用多维向量的形式描述关键点(Classical SIFT algorithm, the first step, select the point of interest second step, points of interest were screened to identify key points the third step, the key point for the distribution of direction The fourth step is described with the key in the form of multi-dimensional vector point)

采用extendedkalmanfilter进行状态估计（电池常电流放电电量）(For state estimation using extended kalman filter)

能量效率相关通信文档，MIMO技术相关，能效定义(An information-theoretic look at MIMO energy-effi cient communications- valuetools-belmega-lasaulce_final)

MATLAB实现的 层次分析法的程序 分享一下 (aph )

N层多米诺介质的透射率和反射率随这介质厚度变化的matlab程序仿真。(N-tier transmission media Domino and reflection with the media thickness of the matlab program simulation.)

FSK 信号的循环谱程序，验证了是正确的(The cycle of FSK signal spectrum procedure, verify the is correct)

TPC性能仿真程序，实现TPC编码及译码，并画出BER性能曲线。(TPC performance simulation procedures, the TPC coding and decoding, and draw the BER performance curve.)