QoS aware power allocation for combined guaranteed performance and best effort users in OFDMA systems

Author

Anas, Mohmmad ; Kim, Kanghee ; Shin, Seokjoo ; Kim, Kiseon

Author_Institution

Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea

fYear

2004

fDate

18-19 Nov. 2004

Firstpage

477

Lastpage

481

Abstract

One of the key issues in design of an orthogonal frequency division multiple access (OFDMA) based system is subcarrier and power allocation. Assuming knowledge of the instantaneous channel gains for all users, we propose a resource allocation scheme for an OFDMA based system to simultaneously provide two services, guaranteed performance (GP) and best effort (BE), with different quality-of-service (QoS). Subcarrier and power allocation are carried out sequentially to reduce the complexity, and an optimal power allocation procedure is derived. Furthermore, we present a reduced complexity suboptimal power allocation algorithm.

Keywords

DiffServ networks; OFDM modulation; broadband networks; frequency division multiple access; optimisation; quality of service; radio access networks; BER constraints; OFDMA systems; QoS aware power allocation; best effort service; broadband wireless access; combined GP/BE user services; differentiated service classes; guaranteed performance service; optimal power allocation procedure; quality-of-service; rate constraints; reduced complexity suboptimal power allocation algorithm; resource allocation scheme; subcarrier allocation; user instantaneous channel gain; Asynchronous transfer mode; Bandwidth; Bit error rate; Communication standards; Data communication; Frequency conversion; Internet; Resource management; Software engineering; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on

Print_ISBN

0-7803-8639-6

Type

conf

DOI

10.1109/ISPACS.2004.1439101

Filename

1439101