认知无线电中直扩信号检测方案设计
首发时间:2010-08-11
摘要:在认知无线电系统中,扩频信号检测方法的选择与方案设计对检测结果的实时性有着重要影响。本文简述了直扩信号时域相关检测方法的原理,利用直扩信号时域相关检测方法提出了一种基于峰均比的判决扩频信号是否存在的方案,在不同信噪比和FFT分辨率下仿真了所提方案的判决性能,给出了门限选择的经验值。
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The Design for Direct Sequence Spread Spectrum Signal Detection in Cognitive Radio
Abstract:In Cognitive Radio system, the method and design for direct sequence spread spectrum signal detection will play an important role in the detection result their real-time characters. This paper gave a brief introduction to the principle of autocorrelation detection in time domain of DSSS signal. A method based on peak-to-average ratio was proposed and simulated the performance in different SNR and different FFT resolution of spectrum. At last, a threshold value was recommended.
Keywords: Signal Detection DSSS Cognitive Radio
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No.4380904526032128****
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