DocumentCode
2265814
Title
Structure of replica-symmetric solutions for randomly-spread CDMA
Author
Tanaka, Toshiyuki
Author_Institution
Fac. of Syst. Design, Tokyo Metropolitan Univ.
fYear
2005
fDate
4-9 Sept. 2005
Firstpage
194
Lastpage
198
Abstract
This paper investigates the structure of the replica-symmetric (RS) solutions for randomly-spread CDMA obtained with the replica method. The objective of this investigation is to resolve the apparent inconsistency observed between the RS solutions for the individually-optimum (IO) detection and those for the jointly-optimum (JO) detection: They appear to be inconsistent with each other in the limit of high signal-to-noise ratio. Our result reveals that the RS solutions have a complex structure at high-SNR regime, which has been mostly overlooked in the literature
Keywords
Bayes methods; code division multiple access; information theory; random processes; symmetry; SNR; individually-optimum detection; jointly-optimum detection; randomly-spread CDMA; replica-symmetric solutions; Baseband; Communication channels; Equations; Gaussian noise; Information analysis; Multiaccess communication; Parity check codes; Performance analysis; Signal resolution; Signal to noise ratio;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on
Conference_Location
Adelaide, SA
Print_ISBN
0-7803-9151-9
Type
conf
DOI
10.1109/ISIT.2005.1523321
Filename
1523321
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