FIRfilterPack

QPSK调制 经典，非常简洁的产生qpsk的调制方法1(QPSK Modulation)

sift纯matlab代码,算法实现比较好，研究sift算法一定能够用的上的(the matlab code of sift,it would be very useful when you research the sift)

另一个有关多尺度retinex的matlab代码，效果不错(Another multi-scale retinex the matlab code, good results)

自适应滤波技术中的LMS自适应滤波器程序(Adaptive filtering technology LMS adaptive filter procedures)

潮流计算 牛顿拉夫逊方法(chaoliujisuan niu dun la fu xun chao liu ji suan )

　多输入多输出正交分频多工模拟器。 　　 　　正交分频多工:OFDM模拟器(外层函数) 　　 　　 　　create_channel:产生一个瑞利衰落信道复用,解的天线配置、正交分频多工结构、power-delay档案。 　　 　　 　　svd_decompose_channel:既然全网络知识是假设,在并行传输奇异值模式。这个函数分解这些频道模式。 　　 　　 　　BitLoad:适用bit-loading算法来实现预期的钻头和能量 (MIMO OFDM Simulator: OFDM.m: OFDM Simulator (outer function) create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile. svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes. BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance. ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel). chow_algo.m: Apply Chow s algorithm to generate a particular bit and energy allocation. EnergyTableInit.m: Given the SNR values, form a table of energy increments for each channel. campello_algo.m: Apply Campello s algorithm to converge to the optimal bit and energy allocatio)

该压缩文件是OFDM的仿真MATLAB程序，包含调制解调和性能分析，希望有帮助。(The compressed file is a MATLAB simulation of the OFDM process, including modem and performance analysis, would like to have help.)

说明：  可以使用BP神经网络对矩阵形式的数据进行训练，并且进行数据预测，代码注释详细(BP neural network can be used to train the data in matrix form, predict the data, and annotate the code in detail)

This code is example of image adjustment.

OFDM链路级的仿真器场景是单小区单用户，信号从发送端发送，在接收端进行信号估计。估计误差可以从接收和发送信号的不同得到。仿真器的输出是BLER/BER vs SNR。(OFDM Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table。)