摘要
简要介绍了认知无线电通信系统中基于能量检测的谱感知方法,分析了能量检测法的原理和性能。探讨了噪声不确定性产生的原因,分析了在该条件下对信噪比门限和对检测性能的影响。仿真实验表明,能量检测法是一种有效的频谱感知方法。
This paper briefly introduces the spectrum sensing techniques based on energy detector in cognitive radios; the theory and performance of energy detector are described. The causes for production of noise uncertainty are discussed, the impact on SNR threshold and on performance of energy detector is researched. Computer simulation shows that this spectrum sensing technique is a effective method.
出处
《通信技术》
2007年第11期83-85,共3页
Communications Technology
基金
国家自然科学基金资助项目(编号:60672158)
