Opportunistic Spectrum Sharing With Wireless Energy Transfer in Stochastic Networks
Opportunistic Spectrum Sharing With Wireless Energy Transfer in Stochastic Networks
复制标题
随机网络中无线能量传输的机会频谱共享
DOI:
10.1109/tcomm.2017.2739738
复制
发表时间:
2018-03
影响因子:
8.3
通讯作者:
Ju Liu
中科院分区:
文献类型:
--
作者:
Chao Zhai;He Chen;Xinhua Wang;Ju Liu
We consider underlay spectrum sharing with wireless energy transfer in a large-scale cognitive radio network, where each primary user (PU) can harvest radio frequency energy from its associated access point (AP). An energy cooperation zone is applied around each PU, wherein the secondary user (SU) with the best channel quality toward PU is selected to cooperatively transfer wireless energy. With SUs’ assistance, each PU can harvest a predefined amount of energy in a shorter time, so there will be more concurrent primary links in the network. We analyze the transmission probability of PUs by properly modeling their energy statuses using Markov chain. Furthermore, a guard zone is applied around each active AP to prohibit the nearby SU transmissions to avoid strong interference, and SUs outside the guard zones of all the active APs can access the spectrum opportunistically. Under the constraint that the area throughput of primary system should be improved by at least a certain degree, the area throughput of the secondary system is maximized by jointly determining the SUs’ density and the guard zone radius. Numerical results show that our scheme can well accommodate SUs’ transmissions while guaranteeing PUs’ performance requirement.
登录
查看更多内容
影响因子:
16.4
作者:
Ozel, Omur;Tutuncuoglu, Kaya;Yener, Aylin
通讯作者:
Yener, Aylin
DOI:
10.1109/twc.2010.120310.090852
发表时间:
2011-02-01
影响因子:
10.4
作者:
Lee, Jemin;Wang, Hano;Hong, Daesik
通讯作者:
Hong, Daesik
影响因子:
10.4
作者:
Z. Yazdanshenasan;Harpreet S. Dhillon;Mehrnaz Afshang;P. Chong
通讯作者:
Z. Yazdanshenasan;Harpreet S. Dhillon;Mehrnaz Afshang;P. Chong
DOI:
10.1007/978-3-540-38175-4_1
发表时间:
2007
期刊:
--
影响因子:
--
作者:
W. Weil
通讯作者:
W. Weil
DOI:
10.1109/glocom.2012.6503739
发表时间:
2012-05
期刊:
2012 IEEE Global Communications Conference (GLOBECOM)
影响因子:
--
作者:
Xun Zhou;Rui Zhang;Chin Keong Ho
通讯作者:
Xun Zhou;Rui Zhang;Chin Keong Ho