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Sanguk Sagong, Jemin Lee, and Daesik Hong, "Capacity of Reactive DF Scheme in Cognitive Relay Networks" IEEE Trans. Wireless Comm., Oct 2011
[IEEE Trans. Wireless Commun.]
조회 54797
Status : | Published |
---|---|
Date : | 2011-10 |
Title : | Capacity of Reactive DF Scheme in Cognitive Relay Networks |
Authors : | Sanguk Sagong, Jemin Lee and Daesik Hong |
Journal : | IEEE Transactions on Wireless Communications |
Abstract : | This paper evaluates the capacity of the reactive decode-and-forward (R-DF) scheme, which considers the reduced relay candidates based on the signal-to-noise ratio (SNR) of the source-relay link for relay selection in underlay cognitive relay networks. The performance of R-DF scheme is compared with that of the proactive DF (P-DF) scheme. It has been proven that R-DF scheme achieves the similar capacity of P-DF scheme as the primary receiver is located further from the secondary source. Since the transmission power of a secondary user is constrained by the location of the primary receiver, the performance of a cognitive relay network varies depending on the considered link for determining the relay candidates, between the source-relay and the relay-destination links. Hence, we also analyze the performance of the backward R-DF (BR-DF) scheme which the relay candidates are determined based on the relay-destination link. It is also verified that the performance of BR-DF scheme is better than that of R-DF scheme when the primary receiver is located close to the secondary source. |
URL : | http://ieeexplore.ieee.org/xpl/articleDe...er=5995305 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...1f1811d536 |
Sanguk Sagong; Jemin Lee; Daesik Hong; , "Capacity of Reactive DF Scheme in Cognitive Relay Networks," Wireless Communications, IEEE Transactions on , vol.10, no.10, pp.3133-3138, October 2011
doi: 10.1109/TWC.2011.081011.101849
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5995305&isnumber=6064710
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