Application of Triple Correlation and Bispectrum for Interference Immunity Improvement in Telecommunications Systems

Pavel Molchanov; Alexandr Totsky

doi:10.2478/v10006-008-0032-9

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Application of Triple Correlation and Bispectrum for Interference Immunity Improvement in Telecommunications Systems

International Journal of Applied Mathematics and Computer Science

Volume 18 (2008): Issue 3 (September 2008)

By: Pavel Molchanov and Alexandr Totsky

Open Access

|Oct 2008

Abstract

This paper presents a new noise immunity encoding/decoding technique by using the features of triple correlation and bispectrum widely employed in digital signal processing systems operating in noise environments. The triple correlation-and bispectrum-based encoding/decoding algorithm is tested for a digital radio telecommunications binary frequency shift keying system. The errorless decoding probability was analyzed by means of computer simulation for the transmission and reception of a test message in a radio channel disturbed by both additive white Gaussian noise (AWGN) and a mixture of an AWGN and an impulsive noise. Computer simulation results obtained for varying and less than unity signal-to-noise ratios at the demodulator input demonstrate a considerable improvement in the noise immunity of the technique suggested in comparison with the traditional redundant linear block encoding/decoding technique.

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