Cognitive Radio / Cognitive Network System simulator in matlab source code. To Simulate Cognitive Radio System which is so effective that it can harvest more band-width in highly desired bands than is currently in use!

三层介质射线追踪的matlab程序代码。射线追踪能很好的模拟博得传播，因此可以下载看看。-Three medium matlab ray tracing code. Ray tracing can simulate well spread win, so you can download and see.

本代码基于shanchan模型运用matlab编程，可用于模拟通道两相流，执行代码可以达到两相流体密度变化的可视化。-Based on this code shanchan use matlab programming model can be used to simulate two-phase flow channel, to code up to two-phase fluid density variations visualization.