Performance comparison of downlink multiuser MIMO-OFDMA and MIMO-MC-CDMA with transmit side information - Multi-cell analysis

Peter W C Chan, Ernest S. Lo, Vincent K N Lau, Roger S. Cheng, Khaled Letaief, Ross D. Murch, Wai Ho Mow

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple access (MC-CDMA) have recently drawn much attention for being potential candidates of future generation cellular systems. In single-cell scenario, while MC-CDMA is good at achieving frequency diversity when there is no channel state information available at the transmit side (CSIT), OFDMA achieves higher capacity than MC-CDMA due to its finer resolution in exploiting multiuser diversity with CSIT. Whether multiple-input-multiple-output (MIMO) MC-CDMA or OFDMA is a better option in multi-cell system remains unjustified in the literature. In this paper, we study the ergodic capacity and the goodput of MIMO-MC-CDMA and MIMO-OFDMA downlink systems with CSIT in multi-cell scenario assuming that the base station has the knowledge of the average inter-cell interference level only. Several types of users modeling different interference patterns are considered: (I) high data rate delay-insensitive users, (II) high data rate delay-sensitive users, and (DI) voice users (low data rate and bursty). Optimal resource allocation algorithms are used to compute the capacities of the systems, while a simple heuristic is used to obtain the achievable goodputs for both systems. The effects of path loss, number of antennas and different user types are studied and insightful results are obtained. We find that OFDMA has a higher system goodput for both Type I and Type II high data rate users, while MC-CDMA has a higher goodput for Type DI users. Compared to MC-CDMA, the goodput of an OFDMA system is more sensitive to the activity factor of the voice users and suffers from noticeable loss. This demonstrates the superiority of the two systems in different practical situations.

Original languageEnglish
Pages (from-to)2193-2202
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume6
Issue number6
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

Fingerprint

Multicarrier
Frequency division multiple access
Side Information
Orthogonal Frequency Division multiple Access (OFDMA)
Code Division multiple Access
Performance Comparison
Multiple-input multiple-output (MIMO)
Code division multiple access
Cell
Interference
Ergodic Capacity
Multiuser Diversity
Channel state information
Scenarios
User Modeling
Path Loss
Cellular Systems
Channel State Information
Base stations
Optimal Allocation

Keywords

  • Adaptive resource allocation
  • Cross-layer design
  • Fairness
  • MC-CDMA
  • MIMO
  • Multi-cell analysis
  • Multiuser capacity
  • Multiuser diversity
  • OFDMA

ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Performance comparison of downlink multiuser MIMO-OFDMA and MIMO-MC-CDMA with transmit side information - Multi-cell analysis. / Chan, Peter W C; Lo, Ernest S.; Lau, Vincent K N; Cheng, Roger S.; Letaief, Khaled; Murch, Ross D.; Mow, Wai Ho.

In: IEEE Transactions on Wireless Communications, Vol. 6, No. 6, 06.2007, p. 2193-2202.

Research output: Contribution to journalArticle

Chan, Peter W C ; Lo, Ernest S. ; Lau, Vincent K N ; Cheng, Roger S. ; Letaief, Khaled ; Murch, Ross D. ; Mow, Wai Ho. / Performance comparison of downlink multiuser MIMO-OFDMA and MIMO-MC-CDMA with transmit side information - Multi-cell analysis. In: IEEE Transactions on Wireless Communications. 2007 ; Vol. 6, No. 6. pp. 2193-2202.
@article{f178163424be46e691735207177227c9,
title = "Performance comparison of downlink multiuser MIMO-OFDMA and MIMO-MC-CDMA with transmit side information - Multi-cell analysis",
abstract = "Orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple access (MC-CDMA) have recently drawn much attention for being potential candidates of future generation cellular systems. In single-cell scenario, while MC-CDMA is good at achieving frequency diversity when there is no channel state information available at the transmit side (CSIT), OFDMA achieves higher capacity than MC-CDMA due to its finer resolution in exploiting multiuser diversity with CSIT. Whether multiple-input-multiple-output (MIMO) MC-CDMA or OFDMA is a better option in multi-cell system remains unjustified in the literature. In this paper, we study the ergodic capacity and the goodput of MIMO-MC-CDMA and MIMO-OFDMA downlink systems with CSIT in multi-cell scenario assuming that the base station has the knowledge of the average inter-cell interference level only. Several types of users modeling different interference patterns are considered: (I) high data rate delay-insensitive users, (II) high data rate delay-sensitive users, and (DI) voice users (low data rate and bursty). Optimal resource allocation algorithms are used to compute the capacities of the systems, while a simple heuristic is used to obtain the achievable goodputs for both systems. The effects of path loss, number of antennas and different user types are studied and insightful results are obtained. We find that OFDMA has a higher system goodput for both Type I and Type II high data rate users, while MC-CDMA has a higher goodput for Type DI users. Compared to MC-CDMA, the goodput of an OFDMA system is more sensitive to the activity factor of the voice users and suffers from noticeable loss. This demonstrates the superiority of the two systems in different practical situations.",
keywords = "Adaptive resource allocation, Cross-layer design, Fairness, MC-CDMA, MIMO, Multi-cell analysis, Multiuser capacity, Multiuser diversity, OFDMA",
author = "Chan, {Peter W C} and Lo, {Ernest S.} and Lau, {Vincent K N} and Cheng, {Roger S.} and Khaled Letaief and Murch, {Ross D.} and Mow, {Wai Ho}",
year = "2007",
month = "6",
doi = "10.1109/TWC.2007.05518",
language = "English",
volume = "6",
pages = "2193--2202",
journal = "IEEE Transactions on Wireless Communications",
issn = "1536-1276",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "6",

}

TY - JOUR

T1 - Performance comparison of downlink multiuser MIMO-OFDMA and MIMO-MC-CDMA with transmit side information - Multi-cell analysis

AU - Chan, Peter W C

AU - Lo, Ernest S.

AU - Lau, Vincent K N

AU - Cheng, Roger S.

AU - Letaief, Khaled

AU - Murch, Ross D.

AU - Mow, Wai Ho

PY - 2007/6

Y1 - 2007/6

N2 - Orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple access (MC-CDMA) have recently drawn much attention for being potential candidates of future generation cellular systems. In single-cell scenario, while MC-CDMA is good at achieving frequency diversity when there is no channel state information available at the transmit side (CSIT), OFDMA achieves higher capacity than MC-CDMA due to its finer resolution in exploiting multiuser diversity with CSIT. Whether multiple-input-multiple-output (MIMO) MC-CDMA or OFDMA is a better option in multi-cell system remains unjustified in the literature. In this paper, we study the ergodic capacity and the goodput of MIMO-MC-CDMA and MIMO-OFDMA downlink systems with CSIT in multi-cell scenario assuming that the base station has the knowledge of the average inter-cell interference level only. Several types of users modeling different interference patterns are considered: (I) high data rate delay-insensitive users, (II) high data rate delay-sensitive users, and (DI) voice users (low data rate and bursty). Optimal resource allocation algorithms are used to compute the capacities of the systems, while a simple heuristic is used to obtain the achievable goodputs for both systems. The effects of path loss, number of antennas and different user types are studied and insightful results are obtained. We find that OFDMA has a higher system goodput for both Type I and Type II high data rate users, while MC-CDMA has a higher goodput for Type DI users. Compared to MC-CDMA, the goodput of an OFDMA system is more sensitive to the activity factor of the voice users and suffers from noticeable loss. This demonstrates the superiority of the two systems in different practical situations.

AB - Orthogonal frequency division multiple access (OFDMA) and multicarrier code division multiple access (MC-CDMA) have recently drawn much attention for being potential candidates of future generation cellular systems. In single-cell scenario, while MC-CDMA is good at achieving frequency diversity when there is no channel state information available at the transmit side (CSIT), OFDMA achieves higher capacity than MC-CDMA due to its finer resolution in exploiting multiuser diversity with CSIT. Whether multiple-input-multiple-output (MIMO) MC-CDMA or OFDMA is a better option in multi-cell system remains unjustified in the literature. In this paper, we study the ergodic capacity and the goodput of MIMO-MC-CDMA and MIMO-OFDMA downlink systems with CSIT in multi-cell scenario assuming that the base station has the knowledge of the average inter-cell interference level only. Several types of users modeling different interference patterns are considered: (I) high data rate delay-insensitive users, (II) high data rate delay-sensitive users, and (DI) voice users (low data rate and bursty). Optimal resource allocation algorithms are used to compute the capacities of the systems, while a simple heuristic is used to obtain the achievable goodputs for both systems. The effects of path loss, number of antennas and different user types are studied and insightful results are obtained. We find that OFDMA has a higher system goodput for both Type I and Type II high data rate users, while MC-CDMA has a higher goodput for Type DI users. Compared to MC-CDMA, the goodput of an OFDMA system is more sensitive to the activity factor of the voice users and suffers from noticeable loss. This demonstrates the superiority of the two systems in different practical situations.

KW - Adaptive resource allocation

KW - Cross-layer design

KW - Fairness

KW - MC-CDMA

KW - MIMO

KW - Multi-cell analysis

KW - Multiuser capacity

KW - Multiuser diversity

KW - OFDMA

UR - http://www.scopus.com/inward/record.url?scp=34547735969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547735969&partnerID=8YFLogxK

U2 - 10.1109/TWC.2007.05518

DO - 10.1109/TWC.2007.05518

M3 - Article

VL - 6

SP - 2193

EP - 2202

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

SN - 1536-1276

IS - 6

ER -