Add-environmental-effects

radial undistortion in matlab with m code

说明：  根据滚降系数画出滚降系统频谱，并画出相应的时域波形(According to the roll-off factor to draw the spectral roll-off and draw the corresponding time-domain waveform)

说明：  法国中央科学研究院和美国RICE大学共同开发了时频分析工具箱（matlab emd） 是一款非常好用的时频分析计算工具，它是分析时变非平稳信号的有力工具，matlab 时频分析工具箱提供了时间域与频率域的联合分布信息，清楚地描述了信号频率随时间变化的关系。 其中主要含有四种函数： 信号产生函数，可以产生不停类型的信号，如Chirp信号，bpsk信号等。 时频分析函数，可以计算线性、Cohen类、仿射类非线性分析值函数，例如短时傅里叶变换（STFT），Gabor变换，谱图，Wigner-Ville（WVD）等。 分析处理函数 图形显示函数，如等高线、三维图等。(Time-frequency analysis toolbox)

1-32是：图形应用篇 33-66是：界面设计篇 67-84是：图形处理篇 85-100是：数值分析篇 (MATLAB)

example for matlab code

The signal received by a user over the forward link in such a high data rate system contains interference from the neighboring base stations. we note that the strength of this interference is a function of the network load in the neighboring cells. we obtain an expression for the received SINR (Signal to Interference and Noise Ratio) as a function of the traffic load in the interfering cells. Using this result, we propose an improvement to the SINR estimation scheme that is implemented in the current cellular data network. The proposed scheme provides a more accurate estimate of the user SINR by taking better account of the contribution of inter-cell interference. It builds on top of the current SINR measurement scheme by using a combination of pilot measurement and traffic load measurement

地震波信号处理，傅氏变换，震相读取，文件内有使用说明(seismic signal process,fft,phase check)

A MIMO multiplexing system with NT transmit and NR = NT receive antennas is designed. The main challenge for MIMO systems lies in the non-orthogonality of the transmission channel. This can be solved by turbo processing. Turbo channel encoder is used for converting the bits in its suitable form. Then different M-ary QAM is compared.

利用支持向量描述算法（SVDD）做异常点检测(Using support vector description algorithm (SVDD) to detect outliers)

使用PML吸收边界三维FDTD算法MATLAB代码(PML absorbing boundary using three-dimensional FDTD algorithm MATLAB code)