Reduced-rank adaptive least bit-error-rate detection in hybrid direct-sequence time-hopping ultrawide bandwidth systems
Reduced-rank adaptive least bit-error-rate detection in hybrid direct-sequence time-hopping ultrawide bandwidth systems
Design of high-efficiency low-complexity detection schemes for ultrawide bandwidth (UWB) systems is highly challenging. This contribution proposes a reduced-rank adaptive multiuser detection (MUD) scheme operated in least bit-errorrate (LBER) principles for the hybrid direct-sequence timehopping UWB (DS-TH UWB) systems. The principal component analysis (PCA)-assisted rank-reduction technique is employed to obtain a detection subspace, where the reduced-rank adaptive LBER-MUD is carried out. The reduced-rank adaptive LBERMUD is free from channel estimation and does not require the knowledge about the number of resolvable multipaths as well as the knowledge about the multipaths’ strength. In this contribution, the BER performance of the hybrid DS-TH UWB systems using the proposed detection scheme is investigated, when assuming communications over UWB channels modeled by the Saleh-Valenzuela (S-V) channel model. Our studies and performance results show that, given a reasonable rank of the detection subspace, the reduced-rank adaptive LBER-MUD is capable of efficiently mitigating the multiuser interference (MUI) and inter-symbol interference (ISI), and achieving the diversity gain promised by the UWB systems.
849-857
Ahmed, Qasim
57803174-16cc-4720-9126-7030bcca7dd8
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
3 March 2011
Ahmed, Qasim
57803174-16cc-4720-9126-7030bcca7dd8
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Ahmed, Qasim, Yang, Lie-Liang and Chen, Sheng
(2011)
Reduced-rank adaptive least bit-error-rate detection in hybrid direct-sequence time-hopping ultrawide bandwidth systems.
IEEE Transactions on Vehicular Technology, 60 (3), .
Abstract
Design of high-efficiency low-complexity detection schemes for ultrawide bandwidth (UWB) systems is highly challenging. This contribution proposes a reduced-rank adaptive multiuser detection (MUD) scheme operated in least bit-errorrate (LBER) principles for the hybrid direct-sequence timehopping UWB (DS-TH UWB) systems. The principal component analysis (PCA)-assisted rank-reduction technique is employed to obtain a detection subspace, where the reduced-rank adaptive LBER-MUD is carried out. The reduced-rank adaptive LBERMUD is free from channel estimation and does not require the knowledge about the number of resolvable multipaths as well as the knowledge about the multipaths’ strength. In this contribution, the BER performance of the hybrid DS-TH UWB systems using the proposed detection scheme is investigated, when assuming communications over UWB channels modeled by the Saleh-Valenzuela (S-V) channel model. Our studies and performance results show that, given a reasonable rank of the detection subspace, the reduced-rank adaptive LBER-MUD is capable of efficiently mitigating the multiuser interference (MUI) and inter-symbol interference (ISI), and achieving the diversity gain promised by the UWB systems.
Text
TVT-2011-M-3.pdf
- Version of Record
More information
Published date: 3 March 2011
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 272076
URI: http://eprints.soton.ac.uk/id/eprint/272076
ISSN: 0018-9545
PURE UUID: 2c8d2d17-b1da-46d3-ba16-1e2613b6551d
Catalogue record
Date deposited: 01 Mar 2011 21:57
Last modified: 15 Mar 2024 02:59
Export record
Contributors
Author:
Qasim Ahmed
Author:
Lie-Liang Yang
Author:
Sheng Chen
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics