antinface

AM RECEIVER based on super heterodyne principle virtually used in all modern radio and television receivers. The approach mainly involves the use of heterodyning or frequency mixing. The signal from the antenna is filtered sufficiently at least to reject the image frequency and possibly amplified. A local oscillator in the receiver produces a sine wave which mixes with that signal, shifting it to a specific intermediate frequency (IF), usually a lower frequency. The IF signals is itself filtered and amplified and possibly processed in additional ways. The demodulator uses the IF signals rather than the original radio frequency to recreate a copy of the original modulation (such as audio). The project is coded in MATLAB.

用matlab实现knn时的ft计算过程(Calculated using ft matlab realization process when knn)

Jakes Simulation Models With Correct Statistical Properties for Rayleigh Fading Channels

source code is related to the matlab projects in matlab

说明：  一种空时贝叶斯压缩感知算法，用在认知无线电中，大大提高了检测概率(Perception of space-time compression of a Bayesian algorithm, used in the cognitive radio, greatly improving the detection probability)

It is a three dimensional interpolation with tricubic convolution interpolation,which is the method used in Matlab.But, it is more useful and faster the the code implement by Matlab.

The histogram of the image gives the frequency of occurrence of the gray level.

说明：  6QAM通过带限信道，设码元速率为1000波特，传输信道特性为滚降系数为0.75的滚升余弦频谱的滤波器，试建立测试模型并观察接收信号（等效基带信号）的眼图、星座图和相位转移轨迹图。simulink模型(6QAM through the band-limited channel, located at 1000 baud symbol rate, the transmission channel characteristics for the roll-off factor of 0.75 of spectrum raised cosine filter roll and try to create a test model and observe the received signal (the equivalent baseband signal) of the eye diagram, constellation and phase transfer trajectories. simulink model)

对细胞图片进行边缘检测和标注出每个细胞，并且统计细胞数目(Image edge detection on the cell and label of each cell, and statistics the number of cells)

随机人行荷载模拟，能够模拟人群随机人群荷载，用来判断大跨度楼板的振动舒适度(Random pedestrian load simulation)