基于线性自信号消除的机会频谱接入频谱感知

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI:10.1109/PIMRC.2008.4699903

Dong Chen, Jiandong Li, Jing Ma

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引用次数: 3

摘要

讨论了在机会频谱接入中至关重要的频谱感知问题。提出了一种基于线性自信号消除的带内频谱感知方法。该方法不需要静默期，可以在不中断正在进行的传输的情况下提高传输性能。根据无线衰落信道的AR模型，对相邻信号进行线性加权以消除自信号。进一步利用内曼-皮尔逊准则下的最优检测器对自信号消除后的残差信号进行检测，提高检测性能。仿真结果表明，该方法在IEEE802.22环境下具有较好的性能。

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Spectrum sensing based on linear self-signal elimination for opportunistic spectrum access

We discuss the spectrum sensing problem which is crucial in opportunistic spectrum access. An In-band spectrum sensing method based on linear self-signal elimination is proposed. In this method, quiet period is not needed so that transmission performance can be improved without the interruption of on-going transmission. According to the AR model of the wireless fading channel, the adjacent symbols are linear weighted to eliminate the self-signal. Further the optimal detector under Neyman-Pearson criterion is used on the residual signal after self-signal elimination to provide better detection performance. Finally, performance is evaluated with simulations which show that our method can provide better performance in the IEEE802.22 environment.

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来源期刊

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications

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