The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title:	Retransmission strategies for moving networks over ricean fading channels
Author:	Ruiz Lee, Alex
View Online:	njit-etd2008-022 (xi, 45 pages ~ 2.6 MB pdf)
Department:	Department of Electrical and Computer Engineering
Degree:	Master of Science
Program:	Telecommunications
Document Type:	Thesis
Advisory Committee:	Bar-Ness, Yeheskel (Committee chair) Haimovich, Alexander (Committee member) Simeone, Osvaldo (Committee member)
Date:	2008-01
Keywords:	Hybrid Automatic Repeat reQuest Telecommunications networks Retransmission Ricean networks
Availability:	Unrestricted
Abstract:	The problem of designing retransmission protocols based on Hybrid Automatic Repeat reQuest (HARQ) for moving networks over Ricean fading channels has been considered. The scenario of interest consists of one receiver traveling at a given speed while connected to a wireless network based on OFDM (e.g., WiMax) through several base stations located along the path. Five different retransmission protocols that combine HARQ with handover between adjacent base stations are considered. Their performance in terms of number of retransmissions per packet via numerical simulations, considering both frequency selective and nonselective channels are presented. The results obtained show the relevant advantage that can be achieved by the joint design of HARQ and handover, and by exploiting space-time transmit diversity and beamforming via sofihandover.