Asymptotic multiuser efficiency for a two-states CDMA system

Author

Re, Enrico ; Mucchi, Lorenzo ; Ronga, Luca

Author_Institution

DET Dept., Florence Univ., Italy

Volume

6

fYear

2001

fDate

25-29 Nov. 2001

Firstpage

3519

Abstract

The use of CDMA makes third generation wireless systems interference limited rather than noise limited. The research for new methods to reduce interference and increase efficiency lead us to formulate a signaling method where fast impulsive silence states are mapped on zero-energy symbols. The theoretical formulation of the optimum receiver is reported and the asymptotic multiuser efficiency has been derived and applied to the optimum two-states receiver. Numerical comparisons have been performed to show the advantages of the proposed scheme over the traditional single state CDMA transmission. Several operating scenarios have been numerically analyzed and the results are reported in the paper.

Keywords

code division multiple access; interference suppression; mobile radio; multiuser channels; optimisation; personal communication networks; telecommunication signalling; CDMA; UMTS; asymptotic multiuser efficiency; impulsive silence states; interference reduction; optimum two-states receiver; signaling; third generation wireless systems; wireless personal communications; zero-energy symbols; 3G mobile communication; Bandwidth; Energy management; Interference; Multiaccess communication; Noise generators; Power generation economics; Radio link; Radio transmitters; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE

Conference_Location

San Antonio, TX, USA

Print_ISBN

0-7803-7206-9

Type

conf

DOI

10.1109/GLOCOM.2001.966336

Filename

966336