Cooperative HARQ protocols using semi-blind relays for underlay cognitive radio networks

被引:0
|
作者
Sami Touati
Hatem Boujemaa
Musaed A. Al Hussain
Fahd Alturki
Nazha Abed
机构
[1] King Saud University,
[2] University of Carthage,undefined
[3] Sup’Com,undefined
[4] COSIM Laboratory,undefined
来源
Telecommunication Systems | 2016年 / 63卷
关键词
Semi blind relays; AF; DF; Underlay cognitive radio networks;
D O I
暂无
中图分类号
学科分类号
摘要
In this paper, we evaluate the throughput of cooperative ARQ and HARQ I protocols in underlay cognitive radio networks using semi blind relays. Semi Blind Relays do not require to estimate the channel of the first hop, they use only some channel statistics. Relays help the secondary source to deliver its packet. Only relays that generate an interference to primary receiver lower than a predefined threshold will be activated. Three relay selection techniques are considered: opportunistic relaying, partial and reactive relay selection. Opportunistic relaying consists in selecting the relay that offers the highest end-to-end SNR. Partial relay selection consists in selecting the relay that offers the highest SNR of the first hop. Reactive relay selection consists in selecting the relay that offers the highest SNR of the second hop. This relay is selected among the active ones that generate an interference to primary receiver lower than a predefined threshold. To the best of our knowledge, there are no studies dealing with throughput evaluation of HARQ protocols for cognitive radio networks using opportunistic relaying, partial and reactive relay selection. Besides, this is the first paper to deal with HARQ protocols using semi blind relays. Previous studies dealt with outage, bit and symbol error probabilities evaluation for cognitive radio networks.
引用
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页码:287 / 295
页数:8
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