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Nonlinear space-time decorrelator for multiuser detection in non-Gaussian channels

Nonlinear space-time decorrelator for multiuser detection in non-Gaussian channels

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A space-time detection scheme combining nonlinear decorrelators and antenna array is investigated for jointly mitigating multiple access interference, multipath fading and impulsive noise. Monte Carlo simulation results of the proposed space-time detector are presented to justify the relative merits of nonlinear signal processing techniques in the spatial-temporal domain.

Inspec keywords: array signal processing; multiuser channels; interference suppression; decorrelation; impulse noise; code division multiple access; radiofrequency interference; fading channels; signal detection

Other keywords: flat fading channels; nonlinear space-time decorrelator; Monte Carlo simulation; multiple access interference; joint mitigation; multipath fading mitigation; MAI mitigation; synchronous CDMA system; nonlinear signal processing techniques; impulsive noise mitigation; antenna array; nonGaussian channels; multiuser detection; space-time detection scheme

Subjects: Radio links and equipment; Signal detection; Electromagnetic compatibility and interference; Multiple access communication

References

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      • J. Choi . Beamforming for multiuser detection with decorrelator in synchronousCDMA systems: approaches and performance analysis. Signal Process. , 195 - 211
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      • T.C. Chuah , B.S. Sharif , O.R. Hinton . Nonlinear decorrelator for multiuser detection in non-Gaussian impulsiveenvironments. Electron. Lett. , 920 - 922
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      • D. Middleton . Man-made noise in urban environments and transportation systems: modelsand measurements. IEEE Trans. Commun. , 1232 - 1241
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      • R. Lupas , S. Verdu . Linear multiuser detectors for synchronous code-division multiple-accesschannel. IEEE Trans. Inf. Theory , 1 , 123 - 136
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      • C.L. Nikias , M. Shao . (1995) Signal Processing with alpha-stable distributions and applications.
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