Title :
Analytical Framework for Performance Evaluation of Hybrid ARQ Schemes
Author :
Xu, Jun Erik ; Ramchandran, Harish ; Jong, Je-Hong ; Ravishankar, C.
Author_Institution :
Hughes Network Syst., Germantown, MD
Abstract :
In this paper, the performance of automatic retransmission request (ARQ) schemes at the forward link of a wireless system with long round trip delay, e.g., a land mobile satellite (LMS) system, is investigated. Two typical methods, namely conventional and chase combining ARQ schemes, are studied. By modeling the land mobile satellite channel as a hybrid Markov process, we propose an analytical model to evaluate the packet loss rate and transmission efficiency. Simulation is employed to facilitate the use of the model when channel dynamics is taken into account. The proposed analytical approach is intended to provide a platform for the system design and analysis involving ARQ schemes in the LMS system.
Keywords :
Markov processes; automatic repeat request; radiocommunication; wireless channels; analytical framework; analytical model; automatic retransmission request schemes; forward link; hybrid ARQ schemes; hybrid Markov process; land mobile satellite channel; land mobile satellite system; long round trip delay; performance evaluation; wireless system; Analytical models; Automatic repeat request; Decoding; Error analysis; Error correction; Least squares approximation; Markov processes; Performance analysis; Satellite broadcasting; Satellite communication;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.749
