DocumentCode :
687646
Title :
Improving the throughput of cognitive radio networks using the broadcast approach
Author :
Sboui, Lokman ; Rezki, Zouheir ; Alouini, Mohamed-Slim
Author_Institution :
Comput., Electr., & Math. Sci. & Eng. (CEMSE) Div., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia
fYear :
2013
fDate :
9-13 Dec. 2013
Firstpage :
1197
Lastpage :
1202
Abstract :
We study the impact of adopting a multi layer coding (MLC) strategy, i.e., the so-called broadcast approach (BA) on the throughput of Cognitive Radio (CR) spectrum sharing systems for general fading channels. First, we consider a scenario where the secondary transmitter, a part from the statistics, has no channel state information (CSI) of the cross link and its own link. We show that using BA improves the cognitive achievable rate compared to the outage rate provided by a single layer coding (SLC). In addition, we, also, observe numerically that 2-Layer coding achieves most of the gain. Then, we consider a situation where the secondary transmitter has a partial CSI about its own link through quantized CSI. Again, we compute the secondary achievable rate adopting the BA and highlight the improvement over SLC. Numerical results show that the advantage of MLC decreases as the rate of the feedback link increases.
Keywords :
broadcast communication; cognitive radio; encoding; fading channels; radio spectrum management; radio transmitters; MLC; SLC; broadcast approach; channel state information; cognitive radio networks; fading channels; feedback link; multilayer coding; partial CSI; quantized CSI; secondary transmitter; single layer coding; spectrum sharing; Convergence; Underlay cognitive radio; achievable rate; broadcast approach; fading channels; quantized CSI;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Communications Conference (GLOBECOM), 2013 IEEE
Conference_Location :
Atlanta, GA
Type :
conf
DOI :
10.1109/GLOCOM.2013.6831237
Filename :
6831237
Link To Document :
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