DocumentCode :
2899874
Title :
QoS Aware Resource Allocation in Cooperative OFDMA Systems with Service Differentiation
Author :
Zhang, Danhua ; Wang, Youzheng ; Lu, Jianhua
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fYear :
2010
fDate :
23-27 May 2010
Firstpage :
1
Lastpage :
5
Abstract :
Most existing works on resource allocation in cooperative OFDMA systems have focused on homogeneous users with same service and demand. In this paper, we focus on resource allocation in a service differentiated cooperative OFDMA system where each user has individual QoS requirement. We investigate joint power allocation, relay selection and subcarrier assignment to maximize overall system rates with considerations of QoS guarantees and service support. By introducing QoS price, this combinatorial problem with exponential complexity is converted into a convex one, and a two-level dual-primal decomposition based QoS-aware resource allocation (QARA) algorithm is proposed to tackle the problem. Simulation results reveal that our proposed algorithm significant outperforms previous works in terms of both services support and QoS satisfaction.
Keywords :
OFDM modulation; frequency division multiple access; quality of service; resource allocation; QoS aware resource allocation algorithm; cooperative OFDMA system; joint power allocation; relay selection; service differentiation; subcarrier assignment; Base stations; Communications Society; Digital communication; Information science; Laboratories; Land mobile radio cellular systems; Power system relaying; Relays; Resource management; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2010 IEEE International Conference on
Conference_Location :
Cape Town
ISSN :
1550-3607
Print_ISBN :
978-1-4244-6402-9
Type :
conf
DOI :
10.1109/ICC.2010.5501929
Filename :
5501929
Link To Document :
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