Title :
A novel ARQ scheme based on Network Coding Theory in Cognitive Radio networks
Author :
Liu, Yang ; Feng, Zhiyong ; Zhang, Ping
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
fDate :
Aug. 28 2010-Sept. 3 2010
Abstract :
In this paper, Network Coding (NC) Theory is introduced to improve efficiency of the traditional ARQ scheme for Cognitive Radio (CR) broadcast, named as NC-ARQ, in which we consider making the CR basestation combine the lost packets during ARQ broadcast retransmission in CR networks (CRN), with the changeable availability of CR channel. The Broadcast Cost is defined to indicate and compare the theoretic performance between traditional ARQ scheme and NC-ARQ. Numerical results are analyzed to validate the performance improvement of NC-ARQ.
Keywords :
automatic repeat request; cognitive radio; network coding; radio broadcasting; wireless channels; ARQ broadcast retransmission; CR basestation; CR channel; CR network; NC-ARQ scheme; broadcast cost; cognitive radio broadcast; cognitive radio network; lost packet; network coding; Automatic repeat request; Cognitive radio; Equations; Markov processes; Mathematical model; Network coding; Probability; ARQ; Broadcast; Cognitive Radio Networks; Markov Model; Network Coding;
Conference_Titel :
Wireless Information Technology and Systems (ICWITS), 2010 IEEE International Conference on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-7091-4
DOI :
10.1109/ICWITS.2010.5611991
