Information Theoretic Analysis of LDS Scheme

Information Theoretic Analysis of LDS Scheme

In this paper, the capacity region of Low Density Signature Multiple Access Channel (LDS-MAC) is calculated through information theoretic analysis. LDS Code Division Multiple Access (LDS-CDMA) uses spreading sequences of low density for spreading the data symbols in time domain. This technique benef...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE communications letters 2011-08, Vol.15 (8), p.798-800
Hauptverfasser: Razavi, R., Hoshyar, R., Imran, M. A., Wang, Y.
Format: Artikel
Sprache:eng
Schlagworte:
Access methods and protocols, osi model
Applied sciences
Capacity
Channels
Code division multiple access
Complexity theory
Decoding
Density
Detection, estimation, filtering, equalization, prediction
Exact sciences and technology
Fading
Information theory
Information, signal and communications theory
low density signature
Mathematical analysis
Mud
multi-path fading channel
Multiaccess communication
Multiple access
Multiuser detection
Optimization
Receivers
Signal and communications theory
Signal, noise
Simulation
Spreading
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In this paper, the capacity region of Low Density Signature Multiple Access Channel (LDS-MAC) is calculated through information theoretic analysis. LDS Code Division Multiple Access (LDS-CDMA) uses spreading sequences of low density for spreading the data symbols in time domain. This technique benefits from a less complex Multiuser Detector (MUD) compared to conventional CDMA with optimum MUD; while keeping the performance close to the single user scenario for up to 200% loaded conditions. Also evaluated is the effect of different factors on the capacity of LDS MAC.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2011.061011.102098