Title :
Analysis of Sparsely-Spread CDMA via Statistical Mechanics
Author :
Yoshida, Mika ; Tanaka, Toshiyuki
Author_Institution :
Graduate Sch. of Humanities & Sci., Nara Women´´s Univ.
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;
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
DOI :
10.1109/ISIT.2006.262014
