Title :
An Efficient Resource Allocation Algorithm for OFDMA-based Multihop Wireless Transmission
Author :
Chen, Liang ; Krongold, Brian
Author_Institution :
Univ. of Melbourne, Melbourne
Abstract :
This paper investigates the power minimization problem in OFDMA based wireless multihop systems with the knowledge of channel state information (CSI). The joint allocation problem is divided into two stages: bandwidth allocation and subchannel assignment. Efficient optimal and suboptimal algorithms for both stages are jointed together to provide beneficial and stable improvements by exploiting a form of multiuser diversity via intelligent subchannel partitioning on the frequency-selective fading channel.
Keywords :
OFDM modulation; bandwidth allocation; multi-access systems; resource allocation; wireless channels; OFDMA-based multihop wireless transmission; bandwidth allocation; channel state information; frequency-selective fading channel; intelligent subchannel partitioning; multiuser diversity; orthogonal frequency division multiple access; power minimization problem; resource allocation algorithm; subchannel assignment; Bandwidth; Data communication; Decoding; Fading; Land mobile radio; Partitioning algorithms; Relays; Resource management; Signal processing; Spread spectrum communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394566
