Title :
Performance of dual-branch diversity receiver based SR-ARQ in Rayleigh fading channel
Author :
AL-Suhail, Ghaida A. ; Lamahewa, Tharaka A. ; Kennedy, Rodney A.
Author_Institution :
Comput. Eng. Dept., Univ. of Basrah, Basrah, Iraq
Abstract :
Automatic repeat request (ARQ) schemes are quite effective for improving the throughput of system diversity in time-varying channel environments. In this paper, a dual-branch selection diversity receiver based selective repeat-ARQ scheme is investigated to evaluate the optimal throughput performance in terms of the average bit error rate in Rayleigh fading channels. Both uncorrelated and correlated antenna branches are considered. The numerical results shows the effect of optimal switching threshold on the throughput performance in case of switched diversity as well as the mobility effect of the selection combining diversity receiver when correlated antenna branches are present. A significant improvement in the system throughput of selection diversity outperforms that of switched diversity.
Keywords :
Rayleigh channels; automatic repeat request; diversity reception; error statistics; radio receivers; receiving antennas; telecommunication switching; time-varying channels; Rayleigh fading channel; SR-ARQ; average bit error rate; correlated antenna branch; dual-branch diversity receiver; optimal switching threshold; optimal throughput performance; selective repeat-automatic repeat request scheme; time-varying channel environment; uncorrelated antenna branch; Automatic repeat request; Computer errors; Cyclic redundancy check; Diversity methods; Diversity reception; Error correction; Fading; Protocols; Receiving antennas; Throughput;
Conference_Titel :
Signal Processing and Communication Systems, 2009. ICSPCS 2009. 3rd International Conference on
Conference_Location :
Omaha, NE
Print_ISBN :
978-1-4244-4473-1
Electronic_ISBN :
978-1-4244-4474-8
DOI :
10.1109/ICSPCS.2009.5306398
