Cognitive Radios (CRs), which sense the spectrum and implement opportunistic sharing when no licensed user is found to use it, are able to improve the efficiency of spectrum. Spectrum sensing must be firstly solved in CRs. Cooperative sen

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 si

这是一个Matlab实现的能量检测程序，通过能量预测减少整体的错误率，从而实现对协作频谱感知的优化。它在认知无线电网络的自适应环境中表现很好，可以更好地填补频谱空洞。(This is a Matlab implementation of energy detection procedures, through the energy prediction to reduce the overall error rate, in order to achieve the optimization o