04872019fdma

基于能量检测的频谱感知.由于实际信道中的多径和阴影效应，单个认知用户频谱感知的性能受到影响，因此需要靠不同用户间的协同频谱感知来对抗多径和阴影效应。本设计要求在文中采用一种协作机制，即两用户进行协作频谱感知，提高主用户的检测率，减少检测时间，并且得到捷变增益。要求给出仿真结果。(spectrum sensing in cognitive radio based on energy detection.As the channels in diameter and shadow, not a single user spectrum of capabilities and therefore need different between a user to the spectrum is perceived as more and the effect. this design for the use of a coordination mechanism, the two users collaborate spectrum, the detection rate of increase and decrease the test of time and get a change requires immediate gain. some emulation. )

mulGSND mulGXF1　解非线性方程组　 非常好用的算法　希望大家能用到　(Nonlinear equations is very useful method to hope that we can)

this code about BP neural network trained by PSO algorithm

This is a code for calculating PSNR of two images.

基于规则的逻辑门限值的混合动力汽车整车控制策略，simulink模型建立(Rule-based logic threshold of hybrid car vehicle control strategy, the Simulink model)

信道仿真的很好程序，可以实现不同参数情况下的信道仿真，比如超宽带系统的室内多径环境信道仿真(channel simulation is a good procedure, can be achieved under different parameters of the channel simulation. For example, UWB system indoor multi-path channel simulation environment)

time frequency analysis

一些有助于学习dsp的形象的教程性的程序(That will help to learn dsp easily )

说明：  详尽的抑制载波双边带调制解调程序，有详细的注释说明(Detailed bilateral with carrier suppression modulation and demodulation process, detailed notes)

vc调用matlab引擎的，图文并茂的介绍操作步骤，并给出简单的调用程序(vc call matlab engine, illustrated introduction to the steps, and gives a simple procedure call)