Paper Info
Title
A mew MMSE based cascade filter MUD tracking mode in time-varying channels
Abstract
In direct-sequence code division multiple access (DS-CDMA) systems, performances are limited by multiple access interference (MAI) and intersymbol interference (ISI). To mitigate these interferences and hence increase the capacity and allow high data rates, multiuser detection (MUD) techniques are used. In time varying channels, the MUD's parameters have to be tracked continuously in order to cancel efficiently the different interferences. Motivated by the fact that minimum mean square error (MMSE) based receivers allow significant gain in performances and that decision directed adaptive linear MMSE (DD-AL-MMSE) receivers show poor performances specially in a fast fading environment, a new tracking mode of the two-stage linear cascade filter MUD (CF-MUD) is proposed in this paper offering a good trade-off between performance and complexity. A comparative study analysis of different receivers is conducted, including AL-MMSE and CF-MUD with and without decision directed scheme.
Year
DOI
Venue
2005
10.1109/WIMOB.2005.1512812
WiMob'2005), IEEE International Conference
Keywords
Field
DocType
code division multiple access,interference suppression,intersymbol interference,least mean squares methods,multiuser detection,spread spectrum communication,time-varying channels,DS-CDMA systems,ISI,MMSE based receivers,MUD techniques,cascade filter,decision directed adaptive linear MMSE receivers,direct-sequence code division multiple access systems,interferences cancellation,interferences mitigation,intersymbol interference,minimum mean square error based receivers,multiple access interference,multiuser detection techniques,time-varying channels,two-stage linear cascade filter MUD
Intersymbol interference,Telecommunications,Fading,Computer science,Communication channel,Minimum mean square error,Multiuser detection,Computer network,Electronic engineering,Interference (wave propagation),Code division multiple access,Spread spectrum
Conference
Volume
ISBN
Citations 
1
0-7803-9181-0
3
PageRank 
References 
Authors
0.47
14
1
Name
Order
Citations
PageRank
Adel Omar Dahmane1248.77