Computer
Defuzzification: criteria and classification
Fuzzy Sets and Systems
Multiuser Detection
An Introduction to Spread-Spectrum Communications
An Introduction to Spread-Spectrum Communications
Spread Spectrum CDMA Systems for Wireless Communications
Spread Spectrum CDMA Systems for Wireless Communications
Fuzzy recursive symbol-by-symbol detector for single user CDMA receivers
ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02
Sequential PN acquisition scheme based on a fuzzy logic controller
IWANN'05 Proceedings of the 8th international conference on Artificial Neural Networks: computational Intelligence and Bioinspired Systems
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One of the most important problems to be solved in Direct Sequence Spread Spectrum systems is to achieve a robust acquisition of the pseudonoise sequence. In time-varying environments this fact becomes even more important because acquisition and tracking performance can heavily degrade communication reliability. In this work a new multiresolutive acquisition system with a fuzzy logic estimator is proposed. The fuzzy logic estimation improves the accuracy of the acquisition stage compared to the results for the stability controller, through the estimation of the probability of being acquired, and the signal to noise ratio in the channel.