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Blind Per-Survivor Processing-Based Multiuser Detection for Channel-Coded Multi-Carrier DS-CDMA Systems

Blind Per-Survivor Processing-Based Multiuser Detection for Channel-Coded Multi-Carrier DS-CDMA Systems
Blind Per-Survivor Processing-Based Multiuser Detection for Channel-Coded Multi-Carrier DS-CDMA Systems
In this paper, we present a blind Per-Survivor Processing (PSP)-hased Multiuser Detector (MUD) for synchronous Multicarrier (MC) Direct Sequence (DS) CDMA systems. We modify the branch metric conventionally used for the Single-Carrier (SC) PSP-based MUD in order to detect synchronous MC DS-CDMA signals. Subsequently we characterise the performance of rate R = ½ Low Density Parity Check (LDPC)-coded, Convolutional-based Turbo (CT)-coded and convolutional-coded (CC) MC DS-CDMA systems, which employ four subcarriers. We assume that each subcarrier experienced uncorrelated. narrowband Rayleigh fading and quantified the BER performance, computational complexity and system delay. It is observed that when interleaving is performed over a single transmission burst, it is sufficient to utilise low-complexity CC codes. When the MC DS-CDMA system was not constrained by the tolerable system delay and hence interleaving was performed over several transmission bursts, CT codes yielded the best performance. LDPC codes were also capable of approaching the performance attained by the CT codes, although at a factor of 2.4 higher computational complexity.
1376-1380
Yeap, B-L
bf281f9e-735c-4442-acdb-27a3fc1724cf
Guo, F.
fe818c17-ec7b-4e21-b8f3-f2fb11fe5dd8
Kuan, E-L
e212641a-3979-43d5-9347-0bfe3b53c088
Wei, H
406657e8-8423-46a8-94c3-2f48f2c06e6e
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Yeap, B-L
bf281f9e-735c-4442-acdb-27a3fc1724cf
Guo, F.
fe818c17-ec7b-4e21-b8f3-f2fb11fe5dd8
Kuan, E-L
e212641a-3979-43d5-9347-0bfe3b53c088
Wei, H
406657e8-8423-46a8-94c3-2f48f2c06e6e
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1

Yeap, B-L, Guo, F., Kuan, E-L, Wei, H and Hanzo, L (2004) Blind Per-Survivor Processing-Based Multiuser Detection for Channel-Coded Multi-Carrier DS-CDMA Systems. IEEE VTC'04 (Spring), Italy. 17 - 19 May 2004. pp. 1376-1380 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, we present a blind Per-Survivor Processing (PSP)-hased Multiuser Detector (MUD) for synchronous Multicarrier (MC) Direct Sequence (DS) CDMA systems. We modify the branch metric conventionally used for the Single-Carrier (SC) PSP-based MUD in order to detect synchronous MC DS-CDMA signals. Subsequently we characterise the performance of rate R = ½ Low Density Parity Check (LDPC)-coded, Convolutional-based Turbo (CT)-coded and convolutional-coded (CC) MC DS-CDMA systems, which employ four subcarriers. We assume that each subcarrier experienced uncorrelated. narrowband Rayleigh fading and quantified the BER performance, computational complexity and system delay. It is observed that when interleaving is performed over a single transmission burst, it is sufficient to utilise low-complexity CC codes. When the MC DS-CDMA system was not constrained by the tolerable system delay and hence interleaving was performed over several transmission bursts, CT codes yielded the best performance. LDPC codes were also capable of approaching the performance attained by the CT codes, although at a factor of 2.4 higher computational complexity.

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More information

Published date: 2004
Additional Information: Event Dates: 17-19 May 2004
Venue - Dates: IEEE VTC'04 (Spring), Italy, 2004-05-17 - 2004-05-19
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 260298
URI: https://eprints.soton.ac.uk/id/eprint/260298
PURE UUID: 32cf1a9c-0646-4386-bebb-3eab47623aa6
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 19 Jan 2005
Last modified: 17 Jul 2018 00:36

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