Analysis of Sparsely-Spread CDMA via Statistical Mechanics

Author

Yoshida, Mika ; Tanaka, Toshiyuki

Author_Institution

Graduate Sch. of Humanities & Sci., Nara Women´´s Univ.

fYear

2006

fDate

9-14 July 2006

Firstpage

2378

Lastpage

2382

Abstract

In this paper, we present a framework of statistical-mechanics-based analysis of sparsely-spread CDMA systems. The sparsely-spread CDMA can be considered as a simple mathematical model for various types of CDMA such as frequency-hopping (FH) CDMA and time-hopping (TH) CDMA. After presenting a general framework of analysis by the replica method, we analyze the system with Gaussian inputs, on the basis of the effective medium approximation. We obtain the multiuser efficiency and the spectral efficiency of the sparsely-spread CDMA system, and evaluate its performance in comparison with the densely-spread CDMA system

Keywords

Gaussian processes; code division multiple access; frequency hop communication; statistical analysis; Gaussian inputs; frequency-hopping CDMA; sparsely-spread CDMA; spectral efficiency; statistical mechanics; time-hopping CDMA; Additive noise; Frequency; Gaussian channels; Helium; Informatics; Mathematical model; Multiaccess communication; Radio communication; Random variables; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2006 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

1-4244-0505-X

Electronic_ISBN

1-4244-0504-1

Type

conf

DOI

10.1109/ISIT.2006.262014

Filename

4036396