Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems

Juan Liu, Wei Chen, Zhigang Cao, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

108 Citations (Scopus)

Abstract

Dynamic resource allocation is a key technique that can significantly improve the performance of next generation wireless systems under guaranteed QoS to users. Most of the current resource allocation algorithms are, however, limited to unicast traffics. In practice, how to efficiently allocate various resources in multicast wireless systems is not known. In this paper, we shall study dynamic resource allocation for OFDMA-based single-cell multicast systems. Specifically, we shall formulate an optimization problem to maximize the system throughput given a set of available resources (power and sub-carriers). The optimal resource allocation solution is proposed along with a low-complexity algorithm. In two extreme cases, namely, low and high SNR regimes, the low-complexity allocation algorithm is further simplified. Numerical results will show that the system throughput is significantly improved by using our proposed algorithms.

Original languageEnglish
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Pages2607-2611
Number of pages5
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: 19 May 200823 May 2008

Other

OtherIEEE International Conference on Communications, ICC 2008
CountryChina
CityBeijing
Period19/5/0823/5/08

Fingerprint

Resource allocation
Throughput
Quality of service

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Liu, J., Chen, W., Cao, Z., & Letaief, K. (2008). Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems. In ICC 2008 - IEEE International Conference on Communications, Proceedings (pp. 2607-2611). [4533530] https://doi.org/10.1109/ICC.2008.494

Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems. / Liu, Juan; Chen, Wei; Cao, Zhigang; Letaief, Khaled.

ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 2607-2611 4533530.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, J, Chen, W, Cao, Z & Letaief, K 2008, Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems. in ICC 2008 - IEEE International Conference on Communications, Proceedings., 4533530, pp. 2607-2611, IEEE International Conference on Communications, ICC 2008, Beijing, China, 19/5/08. https://doi.org/10.1109/ICC.2008.494
Liu J, Chen W, Cao Z, Letaief K. Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems. In ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 2607-2611. 4533530 https://doi.org/10.1109/ICC.2008.494
Liu, Juan ; Chen, Wei ; Cao, Zhigang ; Letaief, Khaled. / Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems. ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. pp. 2607-2611
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