Frequency-time MMSE equalizer for BER ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Frequency-time MMSE equalizer for BER enhancement of MC-CDMA systems over mulipath fading channel
Author(s) :
Bouasria, F. [Auteur]
Djebbari, Ali [Auteur]
Bouziani, Merahi [Auteur]
Rouvaen, Jean-Michel [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Tahleb Ahmed, Abdelmalik [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Djebbari, Ali [Auteur]
Bouziani, Merahi [Auteur]
Rouvaen, Jean-Michel [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Tahleb Ahmed, Abdelmalik [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Journal title :
International Journal of Applied Engineering Research
Pages :
163-172
Publication date :
2007
English keyword(s) :
Guard time
MMSE equalizer
Multi-carrier CDMA
Multipath fading channels
MMSE equalizer
Multi-carrier CDMA
Multipath fading channels
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
This paper examines the performance of a multicarrier CDMA system over multipath fading channel. Due to the dispersive nature of the mobile communications channels, Multi-Carrier Code Division Multiple Access (MC-CDMA) ...
Show more >This paper examines the performance of a multicarrier CDMA system over multipath fading channel. Due to the dispersive nature of the mobile communications channels, Multi-Carrier Code Division Multiple Access (MC-CDMA) signals will be affected by Inter Channel Interference (ICI), Inter Symbol Interference (ISI) and Multiple Access Interference (MAI), due to the loss of subcarrier orthogonality. To solve the ISI problem, a cyclic extension was introduced to the transmitted symbols, known as guard time, but its introduction results into loss of spectral efficiency. In this context, we consider the use of a Frequency-Time minimum mean square error Equalizer (FTE) to compensate for the corresponding loss in performance, and compare the resulting MC-CDMA systems with the use of guard time. The effect of system parameters such as output Signal-to Noise Ratio (SNR), number of sub-carriers, delay spread, is investigated by simulation, from which we show that MC-CDMA/FTE provides better performance than guard time technique.Show less >
Show more >This paper examines the performance of a multicarrier CDMA system over multipath fading channel. Due to the dispersive nature of the mobile communications channels, Multi-Carrier Code Division Multiple Access (MC-CDMA) signals will be affected by Inter Channel Interference (ICI), Inter Symbol Interference (ISI) and Multiple Access Interference (MAI), due to the loss of subcarrier orthogonality. To solve the ISI problem, a cyclic extension was introduced to the transmitted symbols, known as guard time, but its introduction results into loss of spectral efficiency. In this context, we consider the use of a Frequency-Time minimum mean square error Equalizer (FTE) to compensate for the corresponding loss in performance, and compare the resulting MC-CDMA systems with the use of guard time. The effect of system parameters such as output Signal-to Noise Ratio (SNR), number of sub-carriers, delay spread, is investigated by simulation, from which we show that MC-CDMA/FTE provides better performance than guard time technique.Show less >
Language :
Anglais
Popular science :
Non
Source :