Group-orthogonal multi-carrier CDMA

Xiaodong Cai, Shengli Zhou, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Code division multiple access (CDMA) over frequency- selective fading channels faces challenges in suppressing multiuser interference (MUI). but can also benefit from the channel-induced multipath. diversity. On the other hand, uncoded orthogonal frequency division multiple access (OFDMA) is MUI-free by design, but faces challenges arising from, the fading-induced loss of multipath diversity. In this paper, we wed the advantages of CDMA with those of OFDMA. We design a group-orthogonal multi-carrier CDMA (GO-MC- CDMA) schem.e that minimizes MUI subject to the constraint that the full multipath diversity is enabled for all users. Each group of GO-MC-CDMA users shares a properly selected set of system subcarriers. MUI only exists among users in the same small-size group, which renders application of low-complexity multi-user detection per group, practically feasible. Simulation results illustrate the merits of GO-MJD-CDMA over competing multi-access alternatives.

Original languageEnglish
Title of host publicationProceedings - IEEE Military Communications Conference MILCOM
Pages596-601
Number of pages6
Volume1
StatePublished - Dec 1 2002
Externally publishedYes
Event2002 MILCOM Proceedings; Global Information Grid - Enabling Transformation Through 21st Century Communications - Anaheim, CA, United States
Duration: Oct 7 2002Oct 10 2002

Other

Other2002 MILCOM Proceedings; Global Information Grid - Enabling Transformation Through 21st Century Communications
CountryUnited States
CityAnaheim, CA
Period10/7/0210/10/02

Fingerprint

Code division multiple access
Frequency division multiple access
Multiuser detection
Frequency selective fading
Fading channels

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Electrical and Electronic Engineering

Cite this

Cai, X., Zhou, S., & Giannakis, G. B. (2002). Group-orthogonal multi-carrier CDMA. In Proceedings - IEEE Military Communications Conference MILCOM (Vol. 1, pp. 596-601)

Group-orthogonal multi-carrier CDMA. / Cai, Xiaodong; Zhou, Shengli; Giannakis, Georgios B.

Proceedings - IEEE Military Communications Conference MILCOM. Vol. 1 2002. p. 596-601.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cai, X, Zhou, S & Giannakis, GB 2002, Group-orthogonal multi-carrier CDMA. in Proceedings - IEEE Military Communications Conference MILCOM. vol. 1, pp. 596-601, 2002 MILCOM Proceedings; Global Information Grid - Enabling Transformation Through 21st Century Communications, Anaheim, CA, United States, 10/7/02.
Cai X, Zhou S, Giannakis GB. Group-orthogonal multi-carrier CDMA. In Proceedings - IEEE Military Communications Conference MILCOM. Vol. 1. 2002. p. 596-601
Cai, Xiaodong ; Zhou, Shengli ; Giannakis, Georgios B. / Group-orthogonal multi-carrier CDMA. Proceedings - IEEE Military Communications Conference MILCOM. Vol. 1 2002. pp. 596-601
@inproceedings{ae897f6d25d14403b77323429ed20192,
title = "Group-orthogonal multi-carrier CDMA",
abstract = "Code division multiple access (CDMA) over frequency- selective fading channels faces challenges in suppressing multiuser interference (MUI). but can also benefit from the channel-induced multipath. diversity. On the other hand, uncoded orthogonal frequency division multiple access (OFDMA) is MUI-free by design, but faces challenges arising from, the fading-induced loss of multipath diversity. In this paper, we wed the advantages of CDMA with those of OFDMA. We design a group-orthogonal multi-carrier CDMA (GO-MC- CDMA) schem.e that minimizes MUI subject to the constraint that the full multipath diversity is enabled for all users. Each group of GO-MC-CDMA users shares a properly selected set of system subcarriers. MUI only exists among users in the same small-size group, which renders application of low-complexity multi-user detection per group, practically feasible. Simulation results illustrate the merits of GO-MJD-CDMA over competing multi-access alternatives.",
author = "Xiaodong Cai and Shengli Zhou and Giannakis, {Georgios B.}",
year = "2002",
month = "12",
day = "1",
language = "English",
volume = "1",
pages = "596--601",
booktitle = "Proceedings - IEEE Military Communications Conference MILCOM",

}

TY - GEN

T1 - Group-orthogonal multi-carrier CDMA

AU - Cai, Xiaodong

AU - Zhou, Shengli

AU - Giannakis, Georgios B.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - Code division multiple access (CDMA) over frequency- selective fading channels faces challenges in suppressing multiuser interference (MUI). but can also benefit from the channel-induced multipath. diversity. On the other hand, uncoded orthogonal frequency division multiple access (OFDMA) is MUI-free by design, but faces challenges arising from, the fading-induced loss of multipath diversity. In this paper, we wed the advantages of CDMA with those of OFDMA. We design a group-orthogonal multi-carrier CDMA (GO-MC- CDMA) schem.e that minimizes MUI subject to the constraint that the full multipath diversity is enabled for all users. Each group of GO-MC-CDMA users shares a properly selected set of system subcarriers. MUI only exists among users in the same small-size group, which renders application of low-complexity multi-user detection per group, practically feasible. Simulation results illustrate the merits of GO-MJD-CDMA over competing multi-access alternatives.

AB - Code division multiple access (CDMA) over frequency- selective fading channels faces challenges in suppressing multiuser interference (MUI). but can also benefit from the channel-induced multipath. diversity. On the other hand, uncoded orthogonal frequency division multiple access (OFDMA) is MUI-free by design, but faces challenges arising from, the fading-induced loss of multipath diversity. In this paper, we wed the advantages of CDMA with those of OFDMA. We design a group-orthogonal multi-carrier CDMA (GO-MC- CDMA) schem.e that minimizes MUI subject to the constraint that the full multipath diversity is enabled for all users. Each group of GO-MC-CDMA users shares a properly selected set of system subcarriers. MUI only exists among users in the same small-size group, which renders application of low-complexity multi-user detection per group, practically feasible. Simulation results illustrate the merits of GO-MJD-CDMA over competing multi-access alternatives.

UR - http://www.scopus.com/inward/record.url?scp=0037001081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037001081&partnerID=8YFLogxK

M3 - Conference contribution

VL - 1

SP - 596

EP - 601

BT - Proceedings - IEEE Military Communications Conference MILCOM

ER -