Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas

Sana Spar, Khaled Letaief

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

3 Citations (Scopus)

Abstract

In this paper, we propose an improved pre-combining group detection in the presence of improper multi-access interference (MAI). We consider a transmission of K BPSK signals over M diversity channels in rich scattering environments. The different received signals are grouped at the receiver, and detected jointly in groups using Maximum-Likelihood (ML) detection. The novelty of the proposed scheme consists in the proper use of the information contained in the MAI statistical properties. We show that the proposed receiver achieves higher diversity order gains than conventional group detectors. For example, a gain of the order of |Ḡ|/2 is obtained for the group G compared with the conventional receiver, where |Ḡ| is the interferers number. Particularly, when the group size is one, the proposed receiver is equivalent to a decorrelator that can null out (K- 1) interferers while providing a diversity order of (M -K-1/2) for each signal. Exact pairwise-error probability along with bounds for the bit-error rate are derived for each group. Numerical results will also show that optimum performance is closely approached when the proposed architecture is used.

Original languageEnglish
Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
Pages267-271
Number of pages5
Volume1
Publication statusPublished - 2003
Externally publishedYes
EventIEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States
Duration: 1 Dec 20035 Dec 2003

Other

OtherIEEE Global Telecommunications Conference GLOBECOM'03
CountryUnited States
CitySan Francisco, CA
Period1/12/035/12/03

Fingerprint

Multiuser detection
Bit error rate
Maximum likelihood
antenna
Scattering
Antennas
Detectors
group size
scattering
Error probability
detection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change

Cite this

Spar, S., & Letaief, K. (2003). Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas. In GLOBECOM - IEEE Global Telecommunications Conference (Vol. 1, pp. 267-271)

Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas. / Spar, Sana; Letaief, Khaled.

GLOBECOM - IEEE Global Telecommunications Conference. Vol. 1 2003. p. 267-271.

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

Spar, S & Letaief, K 2003, Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas. in GLOBECOM - IEEE Global Telecommunications Conference. vol. 1, pp. 267-271, IEEE Global Telecommunications Conference GLOBECOM'03, San Francisco, CA, United States, 1/12/03.
Spar S, Letaief K. Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas. In GLOBECOM - IEEE Global Telecommunications Conference. Vol. 1. 2003. p. 267-271
Spar, Sana ; Letaief, Khaled. / Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas. GLOBECOM - IEEE Global Telecommunications Conference. Vol. 1 2003. pp. 267-271
@inproceedings{5e9b32644a87446581b37df431a27383,
title = "Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas",
abstract = "In this paper, we propose an improved pre-combining group detection in the presence of improper multi-access interference (MAI). We consider a transmission of K BPSK signals over M diversity channels in rich scattering environments. The different received signals are grouped at the receiver, and detected jointly in groups using Maximum-Likelihood (ML) detection. The novelty of the proposed scheme consists in the proper use of the information contained in the MAI statistical properties. We show that the proposed receiver achieves higher diversity order gains than conventional group detectors. For example, a gain of the order of |Ḡ|/2 is obtained for the group G compared with the conventional receiver, where |Ḡ| is the interferers number. Particularly, when the group size is one, the proposed receiver is equivalent to a decorrelator that can null out (K- 1) interferers while providing a diversity order of (M -K-1/2) for each signal. Exact pairwise-error probability along with bounds for the bit-error rate are derived for each group. Numerical results will also show that optimum performance is closely approached when the proposed architecture is used.",
author = "Sana Spar and Khaled Letaief",
year = "2003",
language = "English",
volume = "1",
pages = "267--271",
booktitle = "GLOBECOM - IEEE Global Telecommunications Conference",

}

TY - GEN

T1 - Improved Pre-combining Group Multiuser Detection in BPSK-modulated Systems with Multiple Receive Antennas

AU - Spar, Sana

AU - Letaief, Khaled

PY - 2003

Y1 - 2003

N2 - In this paper, we propose an improved pre-combining group detection in the presence of improper multi-access interference (MAI). We consider a transmission of K BPSK signals over M diversity channels in rich scattering environments. The different received signals are grouped at the receiver, and detected jointly in groups using Maximum-Likelihood (ML) detection. The novelty of the proposed scheme consists in the proper use of the information contained in the MAI statistical properties. We show that the proposed receiver achieves higher diversity order gains than conventional group detectors. For example, a gain of the order of |Ḡ|/2 is obtained for the group G compared with the conventional receiver, where |Ḡ| is the interferers number. Particularly, when the group size is one, the proposed receiver is equivalent to a decorrelator that can null out (K- 1) interferers while providing a diversity order of (M -K-1/2) for each signal. Exact pairwise-error probability along with bounds for the bit-error rate are derived for each group. Numerical results will also show that optimum performance is closely approached when the proposed architecture is used.

AB - In this paper, we propose an improved pre-combining group detection in the presence of improper multi-access interference (MAI). We consider a transmission of K BPSK signals over M diversity channels in rich scattering environments. The different received signals are grouped at the receiver, and detected jointly in groups using Maximum-Likelihood (ML) detection. The novelty of the proposed scheme consists in the proper use of the information contained in the MAI statistical properties. We show that the proposed receiver achieves higher diversity order gains than conventional group detectors. For example, a gain of the order of |Ḡ|/2 is obtained for the group G compared with the conventional receiver, where |Ḡ| is the interferers number. Particularly, when the group size is one, the proposed receiver is equivalent to a decorrelator that can null out (K- 1) interferers while providing a diversity order of (M -K-1/2) for each signal. Exact pairwise-error probability along with bounds for the bit-error rate are derived for each group. Numerical results will also show that optimum performance is closely approached when the proposed architecture is used.

UR - http://www.scopus.com/inward/record.url?scp=0842332526&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0842332526&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0842332526

VL - 1

SP - 267

EP - 271

BT - GLOBECOM - IEEE Global Telecommunications Conference

ER -