A scheduling technique for increasing downlink throughput in wideband CDMA systems

Author

Kahn, S. ; Gurcan, M.K. ; Oyefuga, O.O.

Author_Institution

Commun. & Signal Process. Res. Group, Imperial Coll., London, UK

Volume

1

fYear

2003

fDate

1-5 Dec. 2003

Firstpage

543

Abstract

In wideband CDMA systems, downlink capacity is limited by distortion in orthogonal codes, causing multiple access interference. This paper presents a multi-frame scheduling method to reduce the number of simultaneous transmissions, thereby increasing capacity. To avoid wasting resources where there is insufficient demand, a buffer management tool is proposed to match the delivered rate to the arrival rate. Simulation results suggest that this gives up to 55% improvement in delivered bit-rate over a single-frame approach.

Keywords

3G mobile communication; broadband networks; buffer storage; code division multiple access; codes; radiofrequency interference; scheduling; arrival rate; buffer management tool; code division multiple access; delivered rate; downlink capacity; increasing downlink throughput; multiframe scheduling method; multiple access interference; orthogonal codes; scheduling technique; simultaneous transmissions; single-frame approach; wideband CDMA systems; Base stations; Downlink; Multiaccess communication; Multiple access interference; Quality of service; Resource management; Signal processing; Throughput; Traffic control; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE

Print_ISBN

0-7803-7974-8

Type

conf

DOI

10.1109/GLOCOM.2003.1258296

Filename

1258296