计算机应用研究2012，Vol.29Issue(9)：3391-3393,3410,4.DOI:10.3969/j.issn.1001-3695.2012.09.050
一种时域一码域联合的认知无线电频谱感知算法
Joint time-code spectrum sensing algorithm for cognitive radio
摘要
Abstract
In order to improve the performance of spectrum sensing in cognitive radio systems, this paper studied the multidimensional spectrum sensing, and proposed a joint time-code spectrum sensing algorithm. The proposed algorithm utilized the characteristics of primary signals with direct-sequence spread spectrum in both the time domain and the code domain, and detected the state of the channel from both time domain and code domain perspectives using energy detection in the time domain and analyzing power spectrum of primary users in the code domain. Finally it confirmed the state of the channel together. Simulation results show that the performance of the joint algorithm outperforms the single time-domain or code-domain spectrum sensing algorithm. The proposed algorithm is applicable in spectrum sensing of primary users with direct-sequence spread spectrum.关键词
认知无线电/频谱感知/联合感知/扩频Key words
cognitive radio/spectrum sensing/joint sensing/spread spectrum分类
信息技术与安全科学引用本文复制引用
赵峰,叶红刚,陈宏滨..一种时域一码域联合的认知无线电频谱感知算法[J].计算机应用研究,2012,29(9):3391-3393,3410,4.基金项目
国家自然科学基金资助项目(61172055,61162008) （61172055,61162008）
广西自然科学基金资助项目(2011GXNSFB018072):广西教育厅科研项目(201012MS080) （2011GXNSFB018072）
