On the capacity of multi-cell UMTS

Author

Elayoubi, S.-E. ; Chahed, T. ; Hébuterne, G.

Author_Institution

Inst. Nat. des Telecommun., Evry, France

Volume

1

fYear

2003

fDate

1-5 Dec. 2003

Firstpage

487

Abstract

In this paper, we focus on the capacity of a multicell UMTS system. We first determine an upper bound on the other cell interference and obtain novel expressions for the SIR and powers for both the uplink and the downlink. The former is an asynchronous CDMA system, often using one of three types of receivers : matched filter, minimum mean-square error (MMSE) and decorrelator. In the latter, the SIR depends on the distance between the user and the base station. We show that the inter-cell interference alters the capacity of the system for all kinds of receivers, though the effective bandwidth expressions remain identical to the ones obtained in the single-cell case. As an application, we show how to use this analytical model to develop a new efficient connection admission control (CAC) algorithm.

Keywords

3G mobile communication; cellular radio; code division multiple access; least mean squares methods; matched filters; radio links; radiofrequency interference; telecommunication congestion control; CAC; SIR; Universal Mobile Telecommunication System; asynchronous CDMA system; bandwidth expressions; base station; cell interference; code-division multiple-access; connection admission control algorithm; matched filter; minimum mean-square error; multicell UMTS system; signal interference ratio; single-cell case; 3G mobile communication; Analytical models; Bandwidth; Base stations; Decorrelation; Downlink; Interference; Matched filters; Multiaccess communication; Upper bound;

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.2003.1258285

Filename

1258285