Title :
Closed-form BEP of Demodulate-and-Forward using two-relay over Rayleigh fading environments
Author :
Alouane, W.H. ; Hamdi, Nawel ; Meherzi, Soumaya
Author_Institution :
SYSCOM, ENIT, Tunis, Tunisia
Abstract :
In this paper, we derive exact closed form expressions for Binary Error Probability (BEP) when using as modulation constellations Quadrature Phase Shift Keying (QPSK) in two-hop two-relay network. We consider Adaptive Demodulate-and-Forward (ADmF) for asynchronous regenerative relays. Each relay cooperates, if its received Signal-to-Noise-Ratio (SNR) corresponding to source-relay link exceeds a required threshold. When at least one relay cooperates, the destination combines the received signals using Maximum-Ratio-Combining (MRC). Otherwise, the destination receives only the source signal. A selection of numerical results is used to verify the exactness of the proposed analytical expressions.
Keywords :
Rayleigh channels; decode and forward communication; error statistics; quadrature phase shift keying; radio links; relay networks (telecommunication); ADmF; MRC; QPSK; Rayleigh fading environments; adaptive demodulate-and-forward; asynchronous regenerative relays; closed-form BEP; closed-form binary error probability; maximum-ratio-combining; quadrature phase shift keying; received SNR; received signal-to-noise-ratio; source signal; source-relay link; two-hop two-relay network; Closed-form solutions; Complexity theory; Error probability; Protocols; Relays; Signal to noise ratio; Wireless communication;
Conference_Titel :
Network of the Future (NOF), 2012 Third International Conference on the
Conference_Location :
Gammarth
Print_ISBN :
978-1-4673-5263-5
Electronic_ISBN :
978-1-4673-5264-2
DOI :
10.1109/NOF.2012.6464010
