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NLIN Mitigation Using Turbo Equalization and an Extended Kalman Smoother
Journal of Lightwave Technology, 2019We develop a method for inter-channel nonlinear interference noise (NLIN) mitigation, based on Turbo equalization and an extended Kalman smoother. The method exploits both the unique statistical properties of NLIN and soft-decision information from the ...
Ori Golani, M. Feder, M. Shtaif
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Turbo Coding with Equalization in WCDMA Downlink
Wireless Personal Communications, 2004In this paper, the performance of turbo coding in WCDMA downlink is considered in conjunction with receivers using two adaptive channel equalizers. Bit error and frame error rates are compared to the performance of the conventional Rake receiver. Special consideration is given to the cases with two receive antennas, the efficiency of the channel ...
Dejan Drajic +2 more
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Turbo Codes and Turbo Equalization
2000Turbo codes, introduced by Berrou, et al.[Berrou et al., 1993] in 1993, provide large coding gain for the memoryless additive white Gaussian noise (AWGN) channel and bring the system performance to within 1 dB from the Shannon capacity limit [Shannon, 1948]. The superior performance soon caused turbo codes to receive intense study.
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Reduced complexity APP for turbo equalization
2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003This paper investigates the subject of reducing the complexity of turbo equalization in which a receiver combines the equalization and decoding process in an iterative fashion. We show that it is possible to approximate the a posteriori probability (APP) module by two time varying linear transversal filters and a simple nonlinear memoryless processor ...
Dan Raphaeli, Ami Saguy
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Neural turbo equalization to mitigate fiber nonlinearity
European Conference on Optical Communication, 2019We propose a turbo equalization scheme based on deep neural networks (DNN) to compensate for fiber nonlinearity. The turbo DNN equalizer can accelerate decoding convergence and achieve a significant gain of about 2 dB in nonlinear regimes.
©. Merl +6 more
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Switching LMS linear turbo equalization
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004Turbo equalization using linear filters for data detection has been shown to perform nearly as well as those based on the original maximum a posteriori probability (MAP) detection approach. Such linear equalization methods have taken on many forms in the literature, from simple least-mean-square (LMS)-based adaptive filtering approaches, to minimum ...
Seok-Jun Lee +2 more
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Switching methods for linear turbo equalization
2004 IEEE International Symposium on Circuits and Systems (ISCAS), 2004In this paper, several switching methods are presented for a class of switching turbo equalization, where the performance improvement is achieved via adapting the choice of equalizers during the iterative procedure. Four techniques for equalizer selection are presented and compared in computer simulations. The switching scheme based on the average soft
Seok-Jun Lee +2 more
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LDPC code design for turbo equalization
Proceedings of the IEEE Information Theory Workshop, 2003We discuss techniques to characterize the probability density function of the extrinsic information at the output of a soft interference canceler based equalizer when used in a turbo equalizer. Then, we show how to use this to compute thresholds for low density parity check (LDPC) codes and to design good LDPC code ensembles for static and time-varying
Krishna R. Narayanan +2 more
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Redundancy Allocation in Turbo-Equalizer Design
IEEE Transactions on Communications, 2005This paper considers properties of the extrinsic information transfer (EXIT) functions of turbo equalized intersymbol interference channels and finite-impulse response precoders. An analytic expression is derived for the maximum value of the EXIT function of the equalizer.
Matthew J. M. Peacock, Iain B. Collings
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Channel Estimation and Turbo Equalization for Coded OTFS and OFDM: A Comparison
IEEE Wireless Communications Letters, 2023Xiang Huang +2 more
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