IEICE Trans - On the Capacity of an Uplink Synchronised DS-CDMA System in a Multiple Cell Environment

On the Capacity of an Uplink Synchronised DS-CDMA System in a Multiple Cell Environment

Duk-Kyung KIM
Seung-Hoon HWANG
Dong-Hahk LEE

Publication
IEICE TRANSACTIONS on Communications Vol.E87-B No.6 pp.1697-1701
Publication Date: 2004/06/01
Online ISSN:
DOI:
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
Keyword:
uplink synchronous transmission, code shortage, soft handover,

Full Text: PDF>>

Summary:
Uplink synchronous transmission has been proposed to improve the uplink capacity of DS-CDMA systems by means of canceling interference from the main paths of other intra-cell users. A significant capacity gain has been reported in a single cell environment. This Letter further investigates the uplink capacity in a multiple cell environment, where two crucial factors are taken into account, namely code shortage problem and soft handover. The impacts of the target E_b/I_o and the other-to-own cell interference ratio, together with the number of channelisation codes, are discussed mathematically and then, confirmed through system level simulations with more realistic parameters.