Robust Symbol Rate Estimation of PSK Signals Under the Cyclostationary Framework |
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Authors: | Yan Jin Hongbing Ji |
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Affiliation: | 1. School of Electronic Engineering, Xidian University, No. 2, South Taibai Road, Xi’an, 710071, Shaanxi Province, P.R. China
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Abstract: | In many communication channels the noise is non-Gaussian and usually exhibits impulsive characteristics. The symbol rate estimation problem of phase-shift keying (PSK) signals in this kind of impulsive noise environment is addressed. Since the performance of the cyclic statistics-based symbol rate estimation methods, which are very effective in Gaussian noise, may deteriorate significantly in the presence of impulsive noise, a robust method under the cyclostationary framework is proposed. Specifically, a robust form of cyclic autocorrelation based on the M-estimate concept is developed. Simulation results show that the proposed robust technique offers a significant performance gain over the cyclic autocorrelation method in impulsive noise. |
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