Detection of Signals in MC–CDMA Using a Novel Iterative Block Decision Feedback Equalizer
Kalapraveen Bagadi
,
Cv Ravikumar
,
K. Sathish
,
Mohammad Alibakhshikenari
(1)
,
Bal Virdee
,
Lida Kouhalvandi
,
Karen Olan-Nunez
,
Giovanni Pau
(2, 3)
,
Chan Hwang See
,
Iyad Dayoub
(4, 5)
,
Patrizia Livreri
,
Sonia Aissa
,
Francisco Falcone
,
Ernesto Limiti
Kalapraveen Bagadi
- Fonction : Auteur
- PersonId : 1171199
- ORCID : 0000-0003-1082-1972
Cv Ravikumar
- Fonction : Auteur
K. Sathish
- Fonction : Auteur
Mohammad Alibakhshikenari
- Fonction : Auteur
- PersonId : 1171200
- ORCID : 0000-0002-8263-1572
Bal Virdee
- Fonction : Auteur
- PersonId : 1171201
- ORCID : 0000-0001-7203-0039
Lida Kouhalvandi
- Fonction : Auteur
- PersonId : 1171202
- ORCID : 0000-0003-0693-4114
Karen Olan-Nunez
- Fonction : Auteur
- PersonId : 1171203
- ORCID : 0000-0003-0717-089X
Giovanni Pau
- Fonction : Auteur
- PersonId : 1171204
- ORCID : 0000-0002-5798-398X
Chan Hwang See
- Fonction : Auteur
- PersonId : 1171205
- ORCID : 0000-0001-8439-7321
Iyad Dayoub
- Fonction : Auteur
- PersonId : 749267
- IdHAL : iyad-dayoub
- ORCID : 0000-0003-0910-4722
- IdRef : 061553603
Patrizia Livreri
- Fonction : Auteur
- PersonId : 1171206
- ORCID : 0000-0001-8599-0418
Sonia Aissa
- Fonction : Auteur
- PersonId : 1171207
- ORCID : 0000-0002-6880-4772
Francisco Falcone
- Fonction : Auteur
- PersonId : 1171208
- ORCID : 0000-0002-4911-9753
Ernesto Limiti
- Fonction : Auteur
- PersonId : 1171209
- ORCID : 0000-0003-4668-7461
Résumé
This paper presents a technique to mitigate multiple access interference (MAI) in multicarrier code division multiple access (MC-CDMA) wireless communications systems. Although under normal circumstances the MC-CDMA system can achieve high spectral efficiency and resistance towards inter symbol interference (ISI) however when exposed to substantial nonlinear distortion the issue of MAI manifests. Such distortion results when the power amplifiers are driven into saturation or when the transmit signal experiences extreme adverse channel conditions. The proposed technique uses a modified iterative block decision feedback equalizer (IB-DFE) that uses a minimal mean square error (MMSE) receiver in the feed-forward path to nullify the residual interference from the IB-DFE receiver. The received signal is re-filtered in an iterative process to significantly improve the MC-CDMA system’s performance. The effectiveness of the proposed modified IB-DFE technique in MC-CDMA systems has been analysed under various harsh nonlinear conditions, and the results of this analysis presented here confirm the effectiveness of the proposed technique to outperform conventional methodologies in terms of the bit error rate (BER) and lesser computational complexity.
Format du dépôt | Fichier |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Detection of Signals in MC–CDMA Using a Novel Iterative Block Decision Feedback Equalizer
|
Résumé |
en
This paper presents a technique to mitigate multiple access interference (MAI) in multicarrier code division multiple access (MC-CDMA) wireless communications systems. Although under normal circumstances the MC-CDMA system can achieve high spectral efficiency and resistance towards inter symbol interference (ISI) however when exposed to substantial nonlinear distortion the issue of MAI manifests. Such distortion results when the power amplifiers are driven into saturation or when the transmit signal experiences extreme adverse channel conditions. The proposed technique uses a modified iterative block decision feedback equalizer (IB-DFE) that uses a minimal mean square error (MMSE) receiver in the feed-forward path to nullify the residual interference from the IB-DFE receiver. The received signal is re-filtered in an iterative process to significantly improve the MC-CDMA system’s performance. The effectiveness of the proposed modified IB-DFE technique in MC-CDMA systems has been analysed under various harsh nonlinear conditions, and the results of this analysis presented here confirm the effectiveness of the proposed technique to outperform conventional methodologies in terms of the bit error rate (BER) and lesser computational complexity.
|
Auteur(s) |
Kalapraveen Bagadi
, Cv Ravikumar
, K. Sathish
, Mohammad Alibakhshikenari
1
, Bal Virdee
, Lida Kouhalvandi
, Karen Olan-Nunez
, Giovanni Pau
2, 3
, Chan Hwang See
, Iyad Dayoub
4, 5
, Patrizia Livreri
, Sonia Aissa
, Francisco Falcone
, Ernesto Limiti
1
UC3M -
Universidad Carlos III de Madrid [Madrid]
( 45695 )
- Calle Madrid 126, 28903 Getafe, Madrid
- Espagne
2
UNIBO -
Alma Mater Studiorum Università di Bologna = University of Bologna
( 30978 )
- Via Zamboni, 33 - 40126 Bologna
- Italie
3
UC -
University of California
( 471291 )
- États-Unis
4
IEMN -
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
( 1066983 )
- [Univ. Lille, CNRS, Centrale Lille Institut, Junia, Univ. Polytechnique Hauts-de-France] ––
Laboratoire Central – Cité Scientifique – Avenue Poincaré – CS 60069 – 59652 VILLENEUVE D’ASCQ CEDEX
- France
5
COMNUM - IEMN -
COMmunications NUMériques - IEMN
( 1066999 )
- Groupe COMNUM - IEMN
- (Advanced Communication Systems Group)
- Bâtiment Lottmann - UPHF Campus Mont Houy - 59313 Valenciennes Cedex 9
- France
|
Licence |
Paternité
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Internationale
|
Date de publication |
2022-10-03
|
Date de publication électronique |
2022-10-03
|
Volume |
10
|
Page/Identifiant |
105674-105684
|
Domaine(s) |
|
Projet(s) Européen(s) |
|
Financement |
|
Mots-clés |
en
CDMA, OFDM, MAI, MMSE, IB-DFE, Maximum Likelihood (ML)
|
DOI | 10.1109/ACCESS.2022.3211392 |
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Kalapraveen Bagadi_2022_IEEEACCESS_Detection_of_Signals_in_MCCDMA.pdf ( 1.37 Mo
)
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