认知无线电中频谱检测的研究进展

Research Advances on Spectrum Sensing in Cognitive Radio Network

频谱检测是认知无线电的关键技术,总结了国内外文献在该领域的最新研究进展,分析物理层检测算法的性能以及检测策略,探讨利用授权用户流量特征提高MAC层检测效率的解决方案,讨论多用户协作检测的数据融和与判决技术。在此基础上分析尚待解决的问题,探讨下一步的研究方向。

Spectrum Sensing is one of the key technologies in cognitive radio. This article summarizes the latest development in the field, analyzes the performance of detection algorithm for physical layer and its detection policies, examining the solution for improving the efficiency of MAC layer detection using the traffic feature of authorized users, and discusses about the data fusion and decision in multi-user collaboration detection. Based on the above aspects, this article proposes the topics for further research.