Independent component analysis, a new concept?
Signal Processing - Special issue on higher order statistics
On-line blind equalization via on-line blind separation
Signal Processing
Multiuser Detection
Advanced ICA-based receivers for block fading DS-CDMA channels
Signal Processing
Multichannel Estimation and Equalization Algorithm for Asynchronous Uplink DS/CDMA
Wireless Personal Communications: An International Journal
Complex independent component analysis of frequency-domain electroencephalographic data
Neural Networks - Special issue: Neuroinformatics
Blind multiuser detection by kurtosis maximization for asynchronous multirate DS/CDMA systems
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
An application of ICA to blind DS-CDMA detection: a joint optimization criterion
IWANN '03 Proceedings of the 7th International Work-Conference on Artificial and Natural Neural Networks: Part II: Artificial Neural Nets Problem Solving Methods
Bounded component analysis of linear mixtures: a criterion of minimum convex perimeter
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Inverse filtering criteria for CDMA systems
IEEE Transactions on Signal Processing
Blind multiuser channel estimation in asynchronous CDMA systems
IEEE Transactions on Signal Processing
Nonsymmetrical contrasts for sources separation
IEEE Transactions on Signal Processing
Blind MAI and ISI suppression for DS/CDMA systems using HOS-basedinverse filter criteria
IEEE Transactions on Signal Processing
Complex ICA Using Nonlinear Functions
IEEE Transactions on Signal Processing
Performance analysis of minimum variance CDMA receivers
IEEE Transactions on Signal Processing
Super-exponential methods for blind detection of asynchronous CDMA signals over multipath channels
IEEE Transactions on Wireless Communications
Blind multiuser receiver for space-time coded CDMA signals in frequency-selective channels
IEEE Transactions on Wireless Communications
Jammer suppression in DS-CDMA arrays using independent component analysis
IEEE Transactions on Wireless Communications
New criteria for blind deconvolution of nonminimum phase systems (channels)
IEEE Transactions on Information Theory
Blind adaptive multiuser detection
IEEE Transactions on Information Theory
Blind information-theoretic multiuser detection algorithms for DS-CDMA and WCDMA downlink systems
IEEE Transactions on Neural Networks
Complex ICA by Negentropy Maximization
IEEE Transactions on Neural Networks
Hi-index | 0.00 |
We propose an ICA-based method for blind detection of users in asynchronous DS-CDMA communications systems with multipaths channels with the only knowledge of the desired user@?s code. The method can handle both the uplink and the downlink situations, since it does not require the synchronism between users. We convert the received cyclostationary signal into an observations vector that follows the ICA model with instantaneous mixture. The selection of the estimated source is carried out by means of the desired user@?s code. Unlike previous works, we avoid to project the results after each iteration. Instead, we introduce a preprocessing based on a linear transformation of the data that enforces the extraction vector to lie in the desired user@?s subspace. The detection is done in two stages. The second stage is a fine tuning in which the constraint is removed from the data in order to obtain more accurate results. Computer simulations show that the proposed method compares favorably with other well-known methods, in terms of mean-square error (MSE) of the output, symbol error rate and robustness against the near-far problem.