Information theoretic analysis of LDS scheme

R. Razavi; R. Hoshyar; M. A. Imran; Y. Wang

doi:10.1109/LCOMM.2011.061011.102098

Information theoretic analysis of LDS scheme

R. Razavi
, R. Hoshyar
, M. A. Imran
, Y. Wang

University of Surrey
National Semiconductor Corporation
Huawei Technologies Co., Ltd.

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

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.

Original language	English
Article number	5910654
Pages (from-to)	798-800
Number of pages	3
Journal	IEEE Communications Letters
Volume	15
Issue number	8
DOIs	https://doi.org/10.1109/LCOMM.2011.061011.102098
State	Published - Aug 2011
Externally published	Yes

Keywords

Capacity
low density signature
multi-path fading channel

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10.1109/LCOMM.2011.061011.102098

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abstract = "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.",

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AB - 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.

KW - Capacity

KW - low density signature

KW - multi-path fading channel

UR - https://www.scopus.com/pages/publications/80052043782

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JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 8

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ER -

Information theoretic analysis of LDS scheme

Abstract

Keywords

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