Iterative Channel Estimation and Turbo Equalization for Time-Varying Channels in a Coded OFDM-LTE System for 16-QAM and 64-QAM

Werner Haselmayr; David Schellander; Andreas Springer

doi:10.1109/PIMRC.2010.5671759

Iterative Channel Estimation and Turbo Equalization for Time-Varying Channels in a Coded OFDM-LTE System for 16-QAM and 64-QAM

Werner Haselmayr
, David Schellander
, Andreas Springer

Institute for Communications Engineering and RF-Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

The main targets for the next generation of mobile communication systems, with LTE as a main candidate, are increased data rates and improved spectrum efficiency. The transmission scheme for the LTE downlink is OFDM which enables the design of low complexity and high performance receivers, if the channel is time-invariant. However in highmobility scenarios, where the channel is time-variant, the receiver design is more challenging. Therefore in this paper the turbo equalizer presented in [1] is extended to 16-QAM and 64-QAM to compensate the effect of the time-varying channel. Furthermore an iterative pilot-assisted channel estimator based on DPS-BEM is presented. BER performance of the LTE downlink for the ITU Vehicular A channel shows that the improvement due to iterative processing is substantial.

Original language	English
Title of host publication	Proc. 2010 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Pages	614-618
Number of pages	5
DOIs	https://doi.org/10.1109/PIMRC.2010.5671759
Publication status	Published - Sept 2010

Fields of science

202030 Communication engineering
202038 Telecommunications

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10.1109/PIMRC.2010.5671759

Cite this

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title = "Iterative Channel Estimation and Turbo Equalization for Time-Varying Channels in a Coded OFDM-LTE System for 16-QAM and 64-QAM",

abstract = "The main targets for the next generation of mobile communication systems, with LTE as a main candidate, are increased data rates and improved spectrum efficiency. The transmission scheme for the LTE downlink is OFDM which enables the design of low complexity and high performance receivers, if the channel is time-invariant. However in highmobility scenarios, where the channel is time-variant, the receiver design is more challenging. Therefore in this paper the turbo equalizer presented in [1] is extended to 16-QAM and 64-QAM to compensate the effect of the time-varying channel. Furthermore an iterative pilot-assisted channel estimator based on DPS-BEM is presented. BER performance of the LTE downlink for the ITU Vehicular A channel shows that the improvement due to iterative processing is substantial.",

author = "Werner Haselmayr and David Schellander and Andreas Springer",

year = "2010",

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doi = "10.1109/PIMRC.2010.5671759",

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Iterative Channel Estimation and Turbo Equalization for Time-Varying Channels in a Coded OFDM-LTE System for 16-QAM and 64-QAM. / Haselmayr, Werner; Schellander, David; Springer, Andreas.
Proc. 2010 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. 2010. p. 614-618 5671759.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

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AU - Schellander, David

AU - Springer, Andreas

PY - 2010/9

Y1 - 2010/9

N2 - The main targets for the next generation of mobile communication systems, with LTE as a main candidate, are increased data rates and improved spectrum efficiency. The transmission scheme for the LTE downlink is OFDM which enables the design of low complexity and high performance receivers, if the channel is time-invariant. However in highmobility scenarios, where the channel is time-variant, the receiver design is more challenging. Therefore in this paper the turbo equalizer presented in [1] is extended to 16-QAM and 64-QAM to compensate the effect of the time-varying channel. Furthermore an iterative pilot-assisted channel estimator based on DPS-BEM is presented. BER performance of the LTE downlink for the ITU Vehicular A channel shows that the improvement due to iterative processing is substantial.

AB - The main targets for the next generation of mobile communication systems, with LTE as a main candidate, are increased data rates and improved spectrum efficiency. The transmission scheme for the LTE downlink is OFDM which enables the design of low complexity and high performance receivers, if the channel is time-invariant. However in highmobility scenarios, where the channel is time-variant, the receiver design is more challenging. Therefore in this paper the turbo equalizer presented in [1] is extended to 16-QAM and 64-QAM to compensate the effect of the time-varying channel. Furthermore an iterative pilot-assisted channel estimator based on DPS-BEM is presented. BER performance of the LTE downlink for the ITU Vehicular A channel shows that the improvement due to iterative processing is substantial.

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DO - 10.1109/PIMRC.2010.5671759

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SN - 9781424480166

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BT - Proc. 2010 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications

ER -

Iterative Channel Estimation and Turbo Equalization for Time-Varying Channels in a Coded OFDM-LTE System for 16-QAM and 64-QAM

Abstract

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