Efficient mapping of voice calls in wireless OFDMA systems

Author

Ben-Shimol, Yehuda ; Chai, Eldad ; Kitroser, Itzik

Author_Institution

Dept. of Commun. Syst. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva

Volume

10

Issue

9

fYear

2006

Firstpage

641

Lastpage

643

Abstract

We address the problem of efficient resource allocation and its description for constant bitrate traffic (e.g., voice calls) in wireless OFDMA systems. In such systems resources are allocated to users in a two-dimensional map. The representations of the allocated resources have to be broadcast, thus generating a substantial amount of overhead transmission. Here we present an efficient mapping and allocation representation algorithm that increase the total resource utilization by reducing the mapping overhead of the uplink frame for constant bitrate voice sessions. We use the IEEE 802.16 standard for a system model and investigate by simulation the performance of the proposed solution. The results show that the required overhead can be reduced greatly

Keywords

IEEE standards; OFDM modulation; frequency division multiple access; metropolitan area networks; radio networks; resource allocation; telecommunication traffic; voice communication; IEEE 802.16 standard; constant bitrate traffic; resource allocation; voice call mapping; wireless OFDMA system; Base stations; Bit rate; Broadcasting; Communication system traffic; Frequency conversion; Modulation coding; Resource management; Systems engineering and theory; Throughput; WiMAX;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2006.1714530

Filename

1714530