摘要：

针对现有的主流检测算法在算法效率、复杂性及可用性方面存在的问题，分析一种新的基于波形的频谱感知方法，并在其基础上，结合能量检测提出一种联合检测方法。数据分析和仿真结果表明，该联合检测方法能够有效地检测到频谱空穴，并克服在低信噪比下检测效果较差的问题，使检测效率、可靠性、稳定性等各方面的性能均优于波形检测和能量检测。

关键词: 认知无线电, 频谱感知, 波形检测, 能量检测, 联合检测

Abstract:

To solve the deficiency in efficiency, complication and utility of the existing main sensing algorithms, this paper analyzes a way of spectrum sensing derived on waveform, based on which it puts forward a combined detection method associated with energy sensing. According to the numerical analysis and simulation results, it concludes that the combined sensing can effectively detect the spectrum hole and meanwhile, overcome the problem of poor detection effect under low signal to noise ratio, which makes it better than waveform detection and energy detection in detection efficiency, reliability, stability and other performance.

Key words: cognitive radio, spectrum sensing, waveform detection, energy detection, combined detection

中图分类号: 

• TN925