DocumentCode :
640283
Title :
Lattice codes for many-to-one cognitive interference networks
Author :
Jingge Zhu ; Gastpar, Michael
Author_Institution :
Sch. of Comput. & Commun. Sci., EPFL, Lausanne, Switzerland
fYear :
2013
fDate :
7-12 July 2013
Firstpage :
2234
Lastpage :
2238
Abstract :
In this work we consider the cognitive many-to-one interference network. We first extend existing coding schemes from the two-user case to this network scenario. Then we present a novel coding scheme using compute-and-forward and show it can enlarge the achievable rate region considerably for a wide range of parameters. Numerical evaluations are given to compare the performance of different schemes. Specializing the results to symmetric settings, for a range of parameters, our achievable rate region is shown to be within a constant gap from capacity, regardless of the number of cognitive users.
Keywords :
cognitive radio; network coding; numerical analysis; radiofrequency interference; achievable rate region enlargement; cognitive many-to-one interference network; compute-and-forward coding scheme; lattice code; network coding scheme; numerical evaluation; Decoding; Encoding; Interference channels; Lattices; Receivers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on
Conference_Location :
Istanbul
ISSN :
2157-8095
Type :
conf
DOI :
10.1109/ISIT.2013.6620623
Filename :
6620623
Link To Document :
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