认知无线电系统中窄带信号的能量检测

2010 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2010-11-11 DOI:10.1109/WCSP.2010.5633150

Yanxin Yan, Y. Gong

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引用次数: 15

摘要

本文研究了基于能量检测的OFDM宽带认知无线电系统中窄带信号的频谱感知。分析了快速傅里叶变换(FFT)大小对窄带信号检测的影响，提出了适当的FFT大小以提高检测概率。为了降低复杂度，提出了一种改进的频谱感知方案，在不增加实现复杂度的前提下提高检测概率。通过仿真验证了所提方案的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Energy detection of narrowband signals in cognitive radio systems

In this paper, we consider energy detection based spectrum sensing for narrowband signals in a wideband cognitive radio system using OFDM. The effect of fast Fourier transform (FFT) size on detecting narrowband signals is analyzed, and appropriate FFT size is suggested to improve the probability of detection. In order to reduce complexity, an improved spectrum sensing scheme is proposed to improve the detection probability without increasing the implementation complexity. Simulations are performed to verify the presented schemes.

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来源期刊

2010 International Conference on Wireless Communications & Signal Processing (WCSP)

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