Underlay cognitive relay networks with imperfect channel state information and multiple primary receivers
Underlay cognitive relay networks with imperfect channel state information and multiple primary receivers
复制标题
具有不完善信道状态信息和多个主接收器的底层认知中继网络
DOI:
10.1049/iet-com.2014.0429
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发表时间:
2015-03
影响因子:
1.6
通讯作者:
Guan Lei
中科院分区:
文献类型:
--
作者:
Huang Haiyan;Li Zan;Si Jiangbo;Guan Lei
In this study, the authors investigate the effect of imperfect channel state information (CSI) on underlay cognitive radio networks in the presence of multiple primary users (PUs). Particularly, with multiple proactive partial decode-and-forward (DF) relays available, both the relay selection channels and interference channels are assumed to be imperfect. In this context, firstly, based on the instantaneous CSI (ICSI) of interference channels, exact closed form expressions for the outage probability (OP) and the interference probability (IP) are derived, where IP is used as a performance metric to quantify the impact of harmful interference caused by secondary user (SU) on PUs. It is shown that, when the ICSI of interference channels are imperfect, the secondary networks always interfere with PUs' communications. Then, to reduce the harmful interference caused by secondary nodes, we propose an adaptive power control scheme relying on the partial CSI (PCSI) of interference channels. Finally, simulation results verify the accuracy and effectiveness of the author's analytical study, and indicate the proposed scheme strikes a good tradeoff between the interference introduced by secondary nodes on PUs and SU's performance.
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影响因子:
1.1
作者:
Chen, J.;Li, Z.;Si, J.;Huang, H.;Gao, R.
通讯作者:
Gao, R.
DOI:
10.1109/glocom.2011.6133587
发表时间:
2011-12
期刊:
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
影响因子:
--
作者:
Hung Tran;T. Duong;H. Zepernick
通讯作者:
Hung Tran;T. Duong;H. Zepernick
DOI:
10.1109/lcomm.2012.081612.121086
发表时间:
2012-08
期刊:
IEEE Communications Letters
影响因子:
--
作者:
杨平;罗丽平;秦家银
通讯作者:
秦家银
影响因子:
8.3
作者:
Minghua Xia;S. Aïssa
通讯作者:
Minghua Xia;S. Aïssa
DOI:
10.1049/iet-com.2013.0575
发表时间:
2014-03
期刊:
IET Commun.
影响因子:
--
作者:
F. R. V. Guimarães;D. B. D. Costa-D.-B.-D.-Costa-34825558;M. Benjillali;T. Tsiftsis;G. Karagiannidis
通讯作者:
F. R. V. Guimarães;D. B. D. Costa-D.-B.-D.-Costa-34825558;M. Benjillali;T. Tsiftsis;G. Karagiannidis