arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2311.18599eess.SPcs.AI
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频谱感知中多认知用户联合检测算法

Joint Detection Algorithm for Multiple Cognitive Users in Spectrum Sensing

Northwestern University(西北大学);Nankai University(南开大学)

Fanfei Meng, Yuxin Wang, Lele Zhang, Yingxin Zhao

AI总结:

本文研究多认知用户频谱感知,在硬判决基础上引入软判决协作检测,通过仿真验证其能显著降低虚警概率并提高检测概率,从而高效利用空闲频谱资源。

摘要:

频谱感知技术是现代通信技术中的一个关键方面,是在紧张频段中高效利用稀缺信息资源的重要技术之一。本文首先介绍硬判决中三种常见的逻辑电路判决准则,并分析其判决严格性。在硬判决的基础上,进一步介绍一种基于软判决的多用户频谱感知方法。随后,本文对三种准则对应的虚警概率和检测概率曲线进行仿真。多用户协作感知的仿真结果表明,该仿真过程显著降低了虚警概率,并提高了检测概率。该方法能够有效检测空闲期间未被占用的频谱资源,利用时分复用的概念,合理实现信息资源的重新分配。整个计算过程依赖于通信理论中功率谱密度的计算原理,涉及对噪声功率以及噪声与信号功率之和的门限判决检测。它提供了一种二次判决检测,相对准确地反映了逻辑检测方法的感知判决性能。

英文摘要:

Spectrum sensing technology is a crucial aspect of modern communication technology, serving as one of the essential techniques for efficiently utilizing scarce information resources in tight frequency bands. This paper first introduces three common logical circuit decision criteria in hard decisions and analyzes their decision rigor. Building upon hard decisions, the paper further introduces a method for multi-user spectrum sensing based on soft decisions. Then the paper simulates the false alarm probability and detection probability curves corresponding to the three criteria. The simulated results of multi-user collaborative sensing indicate that the simulation process significantly reduces false alarm probability and enhances detection probability. This approach effectively detects spectrum resources unoccupied during idle periods, leveraging the concept of time-division multiplexing and rationalizing the redistribution of information resources. The entire computation process relies on the calculation principles of power spectral density in communication theory, involving threshold decision detection for noise power and the sum of noise and signal power. It provides a secondary decision detection, reflecting the perceptual decision performance of logical detection methods with relative accuracy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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