Turbo equalization
Near capacity three stage MMSE turbo equalization using irregular convolutional codes
... classic turbo equalization scheme [2], the dispersive channel may be viewed as a specific non-recursive convolutional encoder and the APP-based channel equalizer may be regarded as the corresponding ...
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Soft-Decision-Driven Sparse Channel Estimation and Turbo Equalization for MIMO Underwater Acoustic Communications
... Fig. 8 shows the evolution of the a posteriori soft-decision symbols. What is interesting to observe is that the soft-decision symbols in all the three schemes can almost converge to the ideal constellation points. For ...
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Reduced Complexity In Phase/Quadrature Phase M QAM Turbo Equalization Using Iterative Channel Estimation
... the turbo-equalized M-QAM sys- tems ...convolutional turbo codes for the sake of a fair comparison with the similar-complexity convolu- tional ...eight turbo decoding iterations, since experimental ...
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Reduced complexity turbo equalization using a dynamic Bayesian network
... Turbo equalization has its origin in the Turbo Principle, first proposed in [1] where it was applied to the itera- tive decoding of concatenated convolutional ...of Turbo Coding was ...
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Linear MMSE-Optimal Turbo Equalization Using Context Trees
... of turbo equalization are to be used [5], ...the equalization component, due to their attractive computational complexity [4], [9], ...MAP-based turbo equalization is infeasible and ...
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Comparative Study of Turbo Equalization Schemes using Convolutional, Convolutional Turbo, and Block Turbo Codes
... URBO equalization (TEQ) [1] was proposed by Douillard et ...the turbo equalizer was capable of mitigating the effects of inter-symbol interference (ISI), provided that the channel impulse response (CIR) was ...
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On linear MMSE based turbo-equalization of nonlinear Volterra channels
... MMSE-based turbo-equalization of nonlinear ...iterative equalization has not been studied so far in a systematic manner as it has been the case for the linear ISI channel ...MMSE equalization ...
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Block Transmissions over Doubly Selective Channels: Iterative Channel Estimation and Turbo Equalization
... MMSE turbo equalizer for SC systems in doubly selective ...the turbo equalizers proposed so far for SC systems over doubly selective channels employ a serialwise data processing, that is, use a sliding ...
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Turbo Equalization Of Nonlinear ISI-channels Using High Rate FEC Codes
... As linear ISI can be regarded as a special convolutional code, it may be considered as part of a serially concatenated cod- ing scheme. Therefore the concept of iterative equalization and decoding, which is ...
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Low Complexity Turbo Equalization for High Data Rate Wireless Communications
... so-called turbo equalization receiver ...(SISO) equalization algorithms based on linear filters have a tremendous complexity advantage over trellis-diagram-based SISO equalizers, especially for ...
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A low cost soft mapper for turbo equalization with high order modulation
... based turbo equalization receiver, there needs a soft mapper module to calculate the symbol mean and variance from the extrinsic Log-Likelihood-Ratios (LLRs) of code bits coming from the Soft-Input ...
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Joint Multilevel Turbo Equalization and Continuous Phase Frequency Shift Keying
... of turbo coded modulation scheme, called multilevel turbo coded-continuous phase frequency shift keying (MLTC- CPFSK), is designed to improve the overall bit error rate (BER) and bandwidth ...multilevel ...
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Low-complexity soft-decision feedback turbo equalization for multilevel modulations
... decision feedback turbo equalizers. In this paper, we propose a new soft-decision feed- back equalizer (SDFE) suitable for multilevel modulation systems employing turbo equalization. The proposed ...
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Turbo equalization for multiple-input multiple-output (MIMO) wireless communication systems
... for turbo equalization, where the linear filter coefficients are calculated by using the a priori information at the equalizer input and are updated for each ...feedback equalization (DFE) with ...
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Performance Evaluation of Chaos Based IDMA Scheme Using Joint Turbo Equalization Over Frequency Selective Fading Channel
... V. N UMERICAL R ESULTS AND D ISCUSSION This section describes the simulation experiments performed to validate the performance of CB-IDMA using joint turbo equalization. In this experiment, BPSK modulation ...
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Radial Basis Function Assisted Turbo Equalization
... a turbo equalization (TEQ) scheme, which employs a radial basis function (RBF)-based equalizer instead of the conventional trellis-based equalizer of Douillard et ...
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Fully parallel turbo equalization for wireless communications
... Iterative turbo equalization is capable of achieving impressive performance gains over the conventional non-iterative equalization having the same complexity, when communicating over channels that ...
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Combined Channel Estimation and Turbo Equalization on Wireless Channels
... of [10] and the channel estimator of [14]. A derivation of the modified FD-TLE algorithm employing estimated CSI was also presented. BER performance of the system has been evaluated. The results illustrate that most of ...
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Wideband Burst by Burst Adaptive Modulation Using Reduced Complexity In Phase/Quadrature Phase Turbo Equalization
... Adaptive Quadrature Amplitude Modulation (AQAM) [1] is based on a modulation mode switching regime, in which the modulation modes are selected according to the prevalent near-instantaneous channel conditions. When the ...
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Improved BDFE Using a Priori Information for Turbo Equalization
... of turbo equalizer was first proposed in [1], where soft-output Viterbi algorithm (SOVA) with maximum likelihood sequence estimation (MLSE) [2] - [4] is used for the calculation of extrinsic information in both ...
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