NONLINEAR MULTIUSER RECEIVER FOR OPTIMIZED CHAOS-BASED DSCDMA SYSTEMS

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SHAERBAF S.; SEYEDIN S.A.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF ELECTRICAL AND ELECTRONIC ENGINEERING Year:2011 | Volume:7 | Issue:3 Page(s): 149-160

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Information Journal Paper

Title

NONLINEAR MULTIUSER RECEIVER FOR OPTIMIZED CHAOS-BASED DSCDMA SYSTEMS

Author(s)

SHAERBAF S. | SEYEDIN S.A. | Issue Writer Certificate

Keywords

CHAOS-BASED COMMUNICATION

DS-CDMA

RADIAL BASIS FUNCTION

MULTI-USER DETECTION

Abstract

Chaos based communications have drawn increasing attention over the past years. Chaotic signals are derived from non-linear dynamic systems. They are aperiodic, broadband and deterministic signals that appear random in the time domain. Because of these properties, chaotic signals have been proposed to generate spreading sequences for wide-band secure communication recently. Like conventional DS-CDMA systems, chaosbased CDMA systems suffer from multi-user interference (MUI) due to other users transmitting in the cell. In this paper, we propose a novel method based on RADIAL BASIS FUNCTION (RBF) for both blind and non-blind multiuser detection in chaos-based DS-CDMA systems. We also propose a new method for optimizing generation of binary chaotic sequences using Genetic Algorithm. Simulation results show that our proposed nonlinear receiver with optimized chaotic sequences outperforms in comparison to other conventional detectors such as a single-user detector, decorrelating detector and minimum mean square error detector, particularly for under-loaded CDMA condition, which the number of active users is less than processing gain.

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APA: Copy

SHAERBAF, S., & SEYEDIN, S.A.. (2011). NONLINEAR MULTIUSER RECEIVER FOR OPTIMIZED CHAOS-BASED DSCDMA SYSTEMS. IRANIAN JOURNAL OF ELECTRICAL AND ELECTRONIC ENGINEERING, 7(3), 149-160. SID. https://sid.ir/paper/299811/en

Vancouver: Copy

SHAERBAF S., SEYEDIN S.A.. NONLINEAR MULTIUSER RECEIVER FOR OPTIMIZED CHAOS-BASED DSCDMA SYSTEMS. IRANIAN JOURNAL OF ELECTRICAL AND ELECTRONIC ENGINEERING[Internet]. 2011;7(3):149-160. Available from: https://sid.ir/paper/299811/en

IEEE: Copy

S. SHAERBAF, and S.A. SEYEDIN, “NONLINEAR MULTIUSER RECEIVER FOR OPTIMIZED CHAOS-BASED DSCDMA SYSTEMS,” IRANIAN JOURNAL OF ELECTRICAL AND ELECTRONIC ENGINEERING, vol. 7, no. 3, pp. 149–160, 2011, [Online]. Available: https://sid.ir/paper/299811/en

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