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认知无线电中一种改进的频谱感知算法

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Indexed by:期刊论文

Date of Publication:2011-09-10

Journal:通信技术

Volume:44

Issue:9

Page Number:7-9,12

ISSN No.:1002-0802

Key Words:局部多窗口联合奇异值分解;认知无线电;频谱感知;F-范数

Abstract:在分析基于正交频分复用认知系统的局部多窗口联合奇异值分解频谱感知算法优劣的基础上,针对奇异值分解运算量大,对该算法提出了改进.提出了矩阵的F范数代替奇异值分解的方法,以提高算法的实时性.经仿真分析表明,改进后的算法既保证了原有算法中多窗口法(MTM)谱估计的近最优性,提高了算法的实时性,又具有较好的检测性能.

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