Neural Processing Letters
A Neural Network-Based Blind Multiuser Receiver for DS-CDMA Communication Systems
Wireless Personal Communications: An International Journal
An artificial immune system algorithm for CDMA multiuser detection over multi-path channels
GECCO '05 Proceedings of the 7th annual conference on Genetic and evolutionary computation
Journal of VLSI Signal Processing Systems
Stochastic Cellular Neural Network for CDMA Multiuser Detection
ISNN '07 Proceedings of the 4th international symposium on Neural Networks: Advances in Neural Networks, Part III
Particle swarm optimization for multiuser asynchronous CDMA detector in multipath fading channel
WSEAS Transactions on Computers
Population declining ant colony optimization algorithm and its applications
Expert Systems with Applications: An International Journal
Hopfield neural network for UWB multiuser detection
WSEAS TRANSACTIONS on COMMUNICATIONS
IEEE Transactions on Communications
Analysing the convergence behaviour of the PIC detector
Digital Signal Processing
A tree-search algorithm for ML decoding in underdetermined MIMO systems
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Wireless Personal Communications: An International Journal
Multiuser detection using the novel particle swarm optimization with simulated annealing
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Hysteretic HNN MAI-Cancellation for CDMA Signals in Multipath Fading Channels
Neural Processing Letters
Ant colony optimization algorithm with mutation mechanism and its applications
Expert Systems with Applications: An International Journal
IDEAL'07 Proceedings of the 8th international conference on Intelligent data engineering and automated learning
Robust multi-user detection based on quantum bee colony optimisation
International Journal of Innovative Computing and Applications
A novel blind multiuser detection model over flat fast fading channels
ISNN'06 Proceedings of the Third international conference on Advances in Neural Networks - Volume Part III
Immune clonal selection algorithm for multiuser detection in DS-CDMA systems
AI'04 Proceedings of the 17th Australian joint conference on Advances in Artificial Intelligence
Block PIC technique for synchronous CI/MC-CDMA system using neural network
Proceedings of the International Conference on Advances in Computing, Communications and Informatics
Low-complexity dominance-based sphere decoder for MIMO systems
Signal Processing
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We investigate the application of Hopfield neural networks (HNN's) to the problem of multiuser detection in spread spectrum/CDMA (code division multiple access) communication systems. It is shown that the NP-complete problem of minimizing the objective function of the optimal multiuser detector (OMD) can be translated into minimizing an HNN “energy” function, thus allowing to take advantage of the ability of HNN's to perform very fast gradient descent algorithms in analog hardware and produce in real-time suboptimal solutions to hard combinatorial optimization problems. The performance of the proposed HNN receiver is evaluated via computer simulations and compared to that of other suboptimal schemes as well as to that of the OMD for both the synchronous and the asynchronous CDMA transmission cases. It is shown that the HNN detector exhibits a number of attractive properties and that it provides a powerful generalization of a well-known and extensively studied suboptimal scheme, namely the multistage detector