Adaptive filter theory (3rd ed.)
Adaptive filter theory (3rd ed.)
Digital communications using chaos
Signal Processing - Special issue on emerging techniques for communication terminals
Multiuser Detection
Chaos Applications in Telecommunications
Chaos Applications in Telecommunications
Digital Communications with Chaos: Multiple Access Techniques and Performance
Digital Communications with Chaos: Multiple Access Techniques and Performance
Robust synchronization for asynchronous multi-user chaos-based DS-CDMA
Signal Processing
Exact BER Analysis of Differential Chaos Shift Keying Communication System in Fading Channels
Wireless Personal Communications: An International Journal
Chaos-Based Digital Communication Systems: Operating Principles, Analysis Methods, and Performance Evaluation
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This article deals with the problem of multi-user detection for a chaos-based multiple-access system, using a Differential Chaos Shift Keying (DCSK) modulation. The transmission channels are frequency-selective (multipath), and the channel characteristics (gains and delays) are unknown at the receiver side. It is only assumed that estimates of the minimum and maximum delays are available, only for the channel corresponding to the user of interest. Under such assumptions, a least-mean-square detector is derived, whose theoretical performances are provided. This detector is compared with the detector obtained when the delays are known, and with the LMMSE detector, for which all system parameters are available. The theoretical analysis is confirmed by the simulation results, which show that the LMS detector is not dramatically degraded with respect to the LMMSE detector, and that it is quite robust with respect to poor accuracy of the delay estimation.