Title :
Optimal resource allocation in HARQ-based OFDMA wireless networks
Author :
Marcille, Sebastien ; Ciblat, Philippe ; Le Martret, Christophe J.
Author_Institution :
Telecom ParisTech, Paris, France
fDate :
Oct. 29 2012-Nov. 1 2012
Abstract :
This paper deals with multiuser resource allocation (power, bandwidth, constellation size, and code rate) for an OFDMA system using HARQ in the context of Rayleigh distributed channel. We assume that the resource manager (base station or cluster head) only knows the channel statistics of the active links. Then, an optimal algorithm for minimizing the total transmitted power under per user goodput constraints is proposed. Extension to imperfect feedback on HARQ scheme is also performed. This algorithm can be especially applied to military ad hoc wireless networks.
Keywords :
OFDM modulation; Rayleigh channels; ad hoc networks; automatic repeat request; frequency division multiple access; military communication; radio networks; telecommunication channels; HARQ scheme; HARQ-based OFDMA wireless networks; OFDMA system; Rayleigh distributed channel; active links; base station; channel statistics; code rate; constellation size; military ad hoc wireless networks; multiuser resource allocation; optimal algorithm; optimal resource allocation; resource manager; Bandwidth; Clustering algorithms; Context; Modulation; OFDM; Resource management; Signal to noise ratio;
Conference_Titel :
MILITARY COMMUNICATIONS CONFERENCE, 2012 - MILCOM 2012
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-1729-0
DOI :
10.1109/MILCOM.2012.6415608
