Paper Info
Title
A Scalable Fuzzy Interference Canceler For Ds-Cdma Systems
Abstract
The spread spectrum modulation presents a more robust interference rejection capability than non-code-based modulations. However, the increase of the communication services has augmented the power of the interference signals. One example is unlicensed bands such as the 2.4-2.5 GHz one, where the DS-CDMA communications of the IEEE 802.1 lb standard are interfered with by other Industrial Scientific and Medical (ISM) services. One way of improving the interference robustness of the DS-CDMA receivers is introducing an interference canceler (IC) before the despreading stage. The optimum criterion to estimate or detect the interference is the maximum-a-posteriori (MAP) one. However, it requires a high computational burden and a complete knowledge of the statistical model, which reduce its feasibility. To overcome these drawbacks this article proposes an interference canceler based on Fuzzy Logic that allows (1) suppressing both analog and digital interferences, and (2) easily controlling the complexity versus performance trade-off. In other words, the design of the fuzzy canceler follows a down/ top strategy; that is, a first low complex design is possible just departing from linguistic information and, in a second stage, we refine it, incorporating the available statistical information into its structure. Finally, to assess the proposed fuzzy canceler we have derived asymptotic performance bounds. (C) 2005 Wiley Periodicals, Inc.
Year
DOI
Venue
2005
10.1002/int.20065
INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
Field
DocType
Volume
Data mining,Fuzzy logic,Robustness (computer science),Electronic engineering,Interference (wave propagation),Artificial intelligence,Statistical model,Code division multiple access,Mathematics,Spread spectrum,Modulation (music),Scalability
Journal
20
Issue
ISSN
Citations 
2
0884-8173
0
PageRank 
References 
Authors
0.34
14
2
Name
Order
Citations
PageRank
Joan Bas173.52
Ana I. Pérez-Neira240152.50