Bounds on Secondary User Connectivity in Cognitive Radio Networks
Bounds on Secondary User Connectivity in Cognitive Radio Networks
复制标题
认知无线电网络中二次用户连接的界限
DOI:
10.1109/lcomm.2015.2404436
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发表时间:
2015-02
期刊:
影响因子:
--
通讯作者:
Liu Fuqiang
中科院分区:
文献类型:
--
作者:
Liu Dong;Liu Erwu;Ren Yi;Zhang Zhengqing;Wang Rui;Liu Fuqiang
We consider a large-scale cognitive radio network (CRN) in a Rayleigh fading environment. Errors of spectrum sensing by secondary users (SUs) are considered in the letter. Cumulative inter-network interference (between primary and secondary networks) is calculated and outage probability of primary users (PUs) is derived in the closed-form. The upper and lower bounds on the percolation area are obtained and analyzed, within which the secondary network percolates while the PU's outage probability is kept below a tolerable threshold. The bounds depend on SU's correct detection and false alarm probabilities, and PU's transmit power and protection radius. Further we find that the percolation area that percolates SUs and meanwhile provides protection for PUs does not always exist.
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