Title :
Performance of Complex Field Network Coding in Multi-Way Relay Channels
Author :
Sharifian, Saeed ; Hashemitabar, Behnam ; Gulliver, T.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada
Abstract :
Complex field network coding (CFNC) has been shown to achieve a throughput of 1/2 symbol per user per channel use in a multi-way relay channel (MWRC). To achieve this throughput, a superimposed combination of user symbols must be distinguishable at the relay. In this paper, full data exchange in a MWRC network with fading is considered. The pairwise error probability (PEP) of a MWRC with Rayleigh fading is presented, and a closed form approximation of the minimum Euclidean distance distribution for the relay constellation is given. Tight upper bounds on the symbol error rate (SER) are obtained using a nearest neighbours approximation and the effect of a precoding vector on system performance is investigated.
Keywords :
Rayleigh channels; approximation theory; error statistics; network coding; precoding; relay networks (telecommunication); CFNC; MWRC network; PEP; Rayleigh fading; SER; closed form approximation; complex field network coding; data exchange; minimum Euclidean distance distribution; multiway relay channels; nearest neighbours approximation; pairwise error probability; precoding vector; relay constellation; symbol error rate; user symbols; Binary phase shift keying; Peer-to-peer computing; Rayleigh channels; Relays; Vectors; Wireless communication; Multi-way relay channels; cooperative communications; network coding;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2014.042814.132093
