spectrum-sharing-in-CR

说明：  Basic on transfrom an image

采用reed-muller码降低ofdm的par方法(used reed-cup code to reduce the par method ofdm)

本代码是宽带DOA估计matlab代码，信号源是BPSK信号，采用一般线性阵列或均匀线性阵列接收，共涉及频谱已知和未知两种情况。并且各部分均单独编写了m函数。(This code is used to conduct DOA of a broadband signal. The signal source is BPSK, with a general linear array or uniform linear array. Each of these cases includes two kinds of known and unknown spectrum. And, an M function is written separately in each part. )

说明：  噪声中正弦信号的现代法谱分析，采用了直接法、间接法、Bartlett法和Welch法，分别分析了不同窗长度、不同窗函数和不同信噪比对谱估计的影响。(Modern normal spectrum analysis of sinusoidal signal in noise adopts direct method, indirect method, Bartlett method and Welch method. The effects of different window lengths, different window functions and different signal-to-noise ratios on spectrum estimation are analyzed respectively.)

LTE下行链路发射分集仿真，仿真配置：16QAM调制、1/3码率Turbo编码、10MHz带宽、每个子帧一个PDCCH符号、单码字、8次迭代Turbo译码，每次处理1000万比特用户数据、早期终止机制、MMSE（最小均方误差）MIMO接收器，PDSCH发射端进行发射分集预编码。信道模型是LTE-MIMO信道附加AWGN信道。收发两端采用的双天线配置，天线相关性为中等。(LTE downlink transmit diversity simulation configuration: 16QAM modulation, 1/3 Turbo coding rate, 10MHz bandwidth of each sub-frame a PDCCH symbol, single code word, 8 iterations Turbo decoding, each processing 10 million bits of user data, early termination mechanisms, the MMSE (minimum mean square error) the MIMO receivers, a PDSCH transmitting terminal transmit diversity precoding. Channel model is LTE-MIMO channel additional AWGN. Dual antenna transceivers at both ends of the configuration, the antenna correlation is moderate.)

RBF神经网络用s函数编程的，主要功能是用作控制器(RBF neural network with programming function s main function is used as a controller)

matlab code for COLORMAP and COLORBAR utilities (Jul 2014)

这是matlab2010a版的教程。分章阐述符号计算、数值计算、计算结果可视化及编程精要；选例展现MATLAB精华工具SIMULINK的功能级和元器件级仿真能力(This the version tutorial matlab2010a. Sub-chapter on symbolic computation, numerical computation, and result visualization and programming Essentials Selected examples show the functional level and component-level simulation capability for MATLAB Digest tool SIMULINK)

经典OFDM系统的脉冲整型，包含windows和MacOSX两个版本的矩形函数整型、半余弦整型、高斯函数整型、各向同性正交变换算法（IOTA）整型的matlab源代码。(Pulse Shaping classic OFDM system, including two versions of windows and MacOSX rectangular function integer integer half cosine, Gaussian integers, isotropic orthogonal transform algorithm (IOTA) integer matlab source code.)

主成分分析法，包含说明文档和5个MATLAB文件(Principal component analysis, including documentation and 5 MATLAB files)