Title :
Enhanced Efficient Optimal and Suboptimal Radio Resource Allocation in OFDMA System
Author :
Yu, Xuefen ; Lv, Tiejun ; Chang, Pengfei ; Li, Yonghua
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Efficient Branch-and-Bound (BnB) based radio resource allocation (RRA) algorithms are proposed for Orthogonal Frequency Division Multiple Access (OFDMA) system in this paper. Optimal RRA solution can be obtained by BnB based Algorithm 1 with easy implementation. Suboptimal RRA solution can be achieved by BnB based Algorithm 2 with a large computational complexity reduction. Tradeoff between throughput performance and computational complexity can be made by Algorithm 3. Simulation results support our general analysis of the algorithms, and the tradeoff between performance losing and complexity reduction achieved by Algorithm 3.
Keywords :
OFDM modulation; frequency division multiple access; tree searching; BnB based radio resource allocation; OFDMA system; branch-and-bound algorithm; optimal RRA solution; orthogonal frequency division multiple access; Computational complexity; Gold; Modulation; Power demand; Resource management; Throughput;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600209
