认知无线电中OFDM协作频谱感知技术及其优化
Journal of Beijing University of Posts and Telecommunications（2015）
Abstract
利用正交频分复用信号包含循环前缀的特点,提出一种针对该信号的多用户场景下的协作检测模型,用最大化偏移系数的方法对系统的权值向量进行优化,得到优化权值向量的闭合表达式. 理论分析和仿真结果均表明,所提算法检测性能优于经典协作检测算法.
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Key words
performance optimization,cyclic prefix,cooperative sensing,orthogonal frequency division mul-tiplexing,deflection coefficient
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