Adaptive multiuser detection based on RBF networks in impulsive noise CDMA channels

Insoo Sohn, Someshwar C. Gupta

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

With increasing need for capacity in mobile cellular communications, code division multiple access has been viewed as the technique to meet this goal. However, the conventional receiver suffers from multiuser interference and the near-far effect. To alleviate this problem, various multiuser receivers have been proposed. They have been shown to enhance the performance of the conventional receiver with respect to capacity and interference rejection. But these receivers, intended for Gaussian noise channels, can fail in other environments such as impulsive noise conditions. A possible solution is to exploit the advantages of neural networks. A neural network's ability to reject non-Gaussian noise can be utilized to implement multiuser receivers that reject both impulsive noise and multiuser interference. Following this logic, this paper considers nonadaptive multiuser receiver and adaptive multiuser receiver based on radial basis function neural networks. Simulations of these receivers show results that are superior to previously studied multiuser receivers, with respect to practicality and performance.

Original languageEnglish
Pages (from-to)59-66
Number of pages8
JournalInternational Journal of Wireless Information Networks
Volume6
Issue number2
DOIs
StatePublished - 1999

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