本文關(guān)鍵詞： 跳頻通信 噪聲跟蹤干擾 Nakagami衰落信道 協(xié)作頻譜感知 干擾檢測　出處：《電波科學(xué)學(xué)報(bào)》2014年04期 　論文類型：期刊論文

【摘要】：針對(duì)慢跳頻通信中噪聲跟蹤干擾的檢測問題,提出了一種新的噪聲跟蹤干擾檢測算法.該檢測算法應(yīng)用認(rèn)知無線電中協(xié)作頻譜感知方法,分析了接收信號(hào)的條件概率密度函數(shù),研究了加性高斯白噪聲信道下單跳信號(hào)存在干擾的檢測性能.在此基礎(chǔ)上,推導(dǎo)了Nakagami衰落信道下單跳信號(hào)存在干擾的檢測概率和虛警概率,通過對(duì)檢測概率和虛警概率中的多重積分進(jìn)行化簡,得到了檢測概率和虛警概率的級(jí)數(shù)表達(dá)式.單跳信號(hào)檢測后,把檢測結(jié)果上報(bào)到融合中心,應(yīng)用協(xié)作頻譜感知中的"k out of n"準(zhǔn)則分析了噪聲跟蹤干擾的檢測性能.仿真結(jié)果驗(yàn)證了理論分析的正確性.
[Abstract]:A new noise tracking interference detection algorithm is proposed to detect noise tracking interference in slow frequency hopping communication. The conditional probability density function of received signals is analyzed by using cooperative spectrum sensing method in cognitive radio. The detection performance of order hopping signal in additive Gao Si white noise channel is studied. Based on this, the detection probability and false alarm probability of order hopping signal in Nakagami fading channel are derived. By simplifying the multiple integrals in detection probability and false alarm probability, the series expressions of detection probability and false alarm probability are obtained. After single-hop signal detection, the detection results are reported to the fusion center. The detection performance of noise tracking interference is analyzed by using the "k out of n" criterion in cooperative spectrum sensing. The simulation results verify the correctness of the theoretical analysis.
【作者單位】： 軍械工程學(xué)院無人機(jī)工程系;
【分類號(hào)】：TN914.41
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本文編號(hào)：1523425