Iterative equalization and carrier synchronization for single-carrier transmission over severe time-dispersive channels

Araujo, T.; Dinis, Rui

doi:10.1109/glocom.2004.1378923

Cited by 25 publications

(20 citation statements)

References 8 publications

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“…Consider the DD estimator of the CFO given by where are the estimates of the transmitted data obtained from by hard decisions (Figure ). It was shown in that the appropriate value for M , which is the distance between symbols in the CFO estimator , is M = ⌊2 N ∕ 3⌋.…”

Section: Iterative Estimator Of the Carrier Frequency Offsetmentioning

confidence: 99%

“…For the i th iteration, the frequency‐domain samples at the output of the FDE are given by where are the feed‐forward coefficients and are the feedback coefficients. , where the block denotes the data estimates associated to the previous iteration, that is, the hard‐decisions associated to the time‐domain block at the output of the FDE, .…”

Section: Iterative Fde Receivermentioning

confidence: 99%

“…Consider the DD estimator of the CFO given by [19,20] b (Figure 2). It was shown in [19] that the appropriate value for M , which is the distance between symbols in the CFO estimator (9), is M D b2N =3c.…”

Section: Iterative Carrier Frequency Offset Estimation and Compensationmentioning

confidence: 99%

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Analytical performance evaluation of a class of receivers with joint equalisation and residual carrier frequency offset estimation

Pedrosa¹,

Dinis²,

Nunes³

2012

Trans. Emerging Tel. Tech.

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In this paper, we consider a single‐carrier modulation combined with frequency‐domain equalisation block transmission with residual frequency errors. We employ a frequency‐domain iterative decision feedback equalisation (DFE) denoted iterative block‐decision feedback equalisation (IB‐DFE), which is combined with a decision‐directed carrier frequency offset (CFO) estimator. This estimator produces a CFO estimate within each iteration of the equaliser, which is used to compensate for the CFO. As the analytical study of the IB‐DFE is very hard because of the feedback chain, IB‐DFE receivers with joint symbol detection and carrier frequency synchronisation are also very difficult to tackle. To address this problem, we propose three new models. One models the decision‐directed CFO estimator, another models the IB‐DFE and finally one makes use of the previous two models to jointly characterise equalisation and carrier frequency synchronisation. In addition, a novel graphical tool for the convergence evaluation of the iterative receiver is included. Finally, we validate our models using Monte Carlo simulations and conclude that they are accurate for small and moderate residual CFO values. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Iterative Estimator Of the Carrier Frequency Offsetmentioning

confidence: 99%

Section: Iterative Fde Receivermentioning

confidence: 99%

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Analytical performance evaluation of a class of receivers with joint equalisation and residual carrier frequency offset estimation

Pedrosa¹,

Dinis²,

Nunes³

2012

Trans. Emerging Tel. Tech.

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“…In [9], [10] receiver structures for joint fine carrier synchronization and equalization which combines iterative FDE and post-equalization carrier synchronization schemes were proposed. The receiver proposed in [9] can be regarded as a modified IB-DFE where a decision-directed CFO estimation is performed within each iteration of the equalizer.…”

Section: Introductionmentioning

confidence: 99%

“…The receiver proposed in [9] can be regarded as a modified IB-DFE where a decision-directed CFO estimation is performed within each iteration of the equalizer. For SC modulations, the CFO produces a progressive constellation rotation and the equalized signal resembles the received signal for an ideal Gaussian channel, resulting that the carrier synchronization can be performed after the equalization procedure.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of decision-directed carrier synchronization for SC-FDE schemes

Pedrosa

Dinis

Nunes

2008

2008 IEEE International Symposium on Wireless Communication Systems

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In this paper we consider a decision-directed Carrier Frequency Offset (CFO) estimation technique employed in joint equalization and synchronization schemes for broadband wireless systems using Single Carrier (SC) modulations combined with Frequency Domain Equalization (FDE). We build a model for the estimates, explain the reason for their biased behavior and validate the theoretical results through simulations. The model applies to ideal Additive White Gaussian Noise (AWGN) channels. The use of the AWGN channel is justified because, although SC-FDE is usually applied to frequency selective fading channels, the signal at the output of the FDE presents no time dispersion effects.The performance analysis conducted on the CFO estimator suggests that the model describes conveniently the behavior of the system for the Signal-to-Noise Ratio (SNR) operating range.

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Rao-Blackwellized Gauss–Hermite filter for joint state estimation in cyclic prefixed single-carrier systems

Kim

2012

Signal Processing

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Iterative equalization and carrier synchronization for single-carrier transmission over severe time-dispersive channels

Cited by 25 publications

References 8 publications

Analytical performance evaluation of a class of receivers with joint equalisation and residual carrier frequency offset estimation

Analytical performance evaluation of a class of receivers with joint equalisation and residual carrier frequency offset estimation

Performance evaluation of decision-directed carrier synchronization for SC-FDE schemes

Rao-Blackwellized Gauss–Hermite filter for joint state estimation in cyclic prefixed single-carrier systems

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