DocumentCode :
1786562
Title :
A random access scheme with physical-layer network coding and user identification
Author :
Goseling, Jasper
Author_Institution :
Stochastic Oper. Res., Univ. of Twente, Enschede, Netherlands
fYear :
2014
fDate :
10-14 June 2014
Firstpage :
507
Lastpage :
512
Abstract :
A slotted random access scheme is proposed that is based on physical-layer network coding. The scheme uses signature codes that enable the receiver to detect which users are active in each round and which linear combination of packets is received. Feedback enables in each round, one of the users to drop a packet, keeping the queue sizes limited. It is proven that for a broad class of feedback mechanisms the scheme is stable in the sense that the receiver can eventually decode all packets. Numerical results demonstrate that the scheme performs well in terms of the expected queue size, the maximum delay as well as the expected number of retransmissions per packet.
Keywords :
multi-access systems; network coding; queueing theory; radiocommunication; feedback mechanisms; packet dropping; physical layer network coding; queue size limit; random access method; signature code; slotted random access; user identification; Access protocols; Conferences; Decoding; Delays; Network coding; Receivers; Reliability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications Workshops (ICC), 2014 IEEE International Conference on
Conference_Location :
Sydney, NSW
Type :
conf
DOI :
10.1109/ICCW.2014.6881249
Filename :
6881249
Link To Document :
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