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Sensing UMTS bands using cyclostationary features and cooperation between opportunistic terminals

机译:利用循环平稳特性和机会性终端之间的协作来感知UMTS频段

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摘要

The Opportunistic Radio (OR) concept relies on the cognitive features of the OR terminals, namely the ability to adapt its transmitter parameters, based upon interaction with the RF environment in which it operates. An OR system operates in licensed frequency bands, exploiting opportunities and operating with a lower priority regarding the licensed system, implementing a spectrum pool mechanism. The most important constraint is that the OR network should always avoid harmful interference with the licensed system, therefore it should reliably detect licensed signals in the used band in order to avoid interfering with the licensed owner of that band. Given the importance of UMTS systems in current wireless communications, this paper is focused on 3G bands and addresses the problem of sensing weak UMTS signals. The proposed sensing algorithm exploits the cyclostationary features of UMTS signals and the cooperation between multiple OR terminals clustered in the OR network.
机译:机会性无线电(OR)概念依赖于OR终端的认知特征,即基于与其操作所在的RF环境的交互来适应其发射机参数的能力。或系统在许可的频带中运行,利用机会并相对于许可的系统以较低的优先级运行,从而实现频谱池机制。最重要的约束是OR网络应始终避免对许可系统造成有害干扰,因此,它应可靠地检测所使用频段中的许可信号,以避免干扰该频段的许可所有者。考虑到UMTS系统在当前无线通信中的重要性,本文重点关注3G频段,并解决了检测弱UMTS信号的问题。提出的感知算法利用了UMTS信号的循环平稳特性以及OR网络中集群的多个OR终端之间的协作。

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