truetime

this algorithm describes how to take fast fourier transform in matlab

matlab code for getting data from a file

MATLAB数字图像处理灰度均匀化gray uniformization(gray uniformization)

针对天线阵列，偶极子等天线模式的仿真程序，可以调节波长，倾角等参数，并能画出二维和三维的图像，希望能够对大家有所帮助(For antenna array, such as dipole antenna pattern simulation program, you can adjust the wavelength, inclination and other parameters, and can draw two-dimensional and three-dimensional images)

这是一个气体检测的程序，用于检测甲烷等气体，很有用的啊(This is a gas detection program for detecting methane and other gases, useful.)

不同数量的收发天线配置方式对应的信道容量仿真，可以计算当发射端未知CSI时，MIMO信道在不同信噪比下的遍历容量。(A different number of receiving antenna configuration corresponding to the channel capacity of the simulation can be calculated when the transmitter is unknown CSI, MIMO channel ergodic capacity under different SNR.)

 结合理论课讲解基于Matlab建立不同信道模型：高斯信道、Rayleigh信道，Recian信道及多径衰落信道模型；  给出QAM/GMSK调制方式下在上述信道模型下的误码率性能分析，分析比较两种调制方式的优缺点；  分析信道参数、信噪比对误码率性能的影响； (Based on Matlab, we construct different channel models: Gaussian channel, Rayleigh channel, Recian channel and multipath fading channel model. The error rate performance analysis of QAM/GMSK modulation mode under the above channel model is given, and the advantages and disadvantages of the two modulation modes are analyzed and compared.  Analysis of channel parameters, signal to noise ratio on the impact of bit error rate performance )

详细给出了4psk的 调制解调程序,并给出个电波形,最后仿真4psk的误码性能,并给出了误码曲线(4psk detail given to the modulation and demodulation process and given electrical waveform, Simulation of the final four psk the BER, and gives the error curve)

灰色理論中GM(1,1)程式的MATLAB撰寫和說明(Grey theory GM (1,1) and instructions written MATLAB program)

说明：  基于RSSI的定位，已知发射节点的发射信号强度, 接收节点根据接收信号的强度, 计算出传播损耗, 利用理论的或经验的信号传播模型将传播损耗转化为距离, 然后再计算出节点的位置。(Based on RSSI positioning, the transmitting signal strength of the transmitting node is known, and the receiving node calculates the propagation loss according to the received signal strength. The propagation loss is converted into distance by using the theoretical or empirical signal propagation model, and then the position of the node is calculated.)