A software simulation testbed for multi-user detection based on modified Hopfield network

Author

Manai, Nejah ; Ayed, R.B. ; Bouallegue, Ridha

Author_Institution

Dept. of Electr. Eng., El Manar Univ., Tunis, Tunisia

fYear

2004

fDate

2004

Firstpage

335

Lastpage

338

Abstract

Several examinations have shown the drawbacks of single user detectors (SUD) and forced a new concept of suitable multiuser detection schemes to increase the efficiency against interference in mobile communication systems. Some suboptimal solution are only available at this moment because of the complexity of implementing the optimal detector. One of this solutions is the recurrent neural network structure. This algorithm shows a high level performance close to the optimal detector. In this paper, the noisy Hopfield network is proposed as MUD structure and simulated through a wireless CDMA multiuser link using Simulink and Matlab. This structure seem to have superior performance compared with the original Hopfield while only a few more iterations is needed.

Keywords

Hopfield neural nets; code division multiple access; iterative methods; learning (artificial intelligence); mobile radio; multiuser detection; radiofrequency interference; telecommunication computing; Hopfield network; iteration methods; mobile communication systems; multiuser detection schemes; recurrent neural network structure; single user detectors; software simulation testbed; wireless CDMA multiuser link; Chaotic communication; Detectors; Hopfield neural networks; Interference cancellation; Laboratories; Mobile communication; Multiaccess communication; Multiuser detection; Neural networks; Software testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Communications and Signal Processing, 2004. First International Symposium on

Print_ISBN

0-7803-8379-6

Type

conf

DOI

10.1109/ISCCSP.2004.1296295

Filename

1296295