Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2

Spiridon Zettas, Pavlos I. Lazaridis, Zaharias D. Zaharis, Stylianos Kasampalis, Neeli R. Prasad, Ian A. Glover, John P. Cosmas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper the performance of the Adaptive Averaging Channel Estimator (AACE-LS) which is a modified Least Square (LS) estimator and the AACE-LMMSE which is a modified Linear Minimum Mean Error (LMMSE) estimator, are compared with respect to the conventional LS and the LMMSE estimators. The AACE is an estimator which is based on the averaging of the last N Scattered Pilots (SP) from the DVB-T2 model carried in the received OFDM symbols. The proposed method could in general be applied to any pilot based estimator. The noise introduced by the channel is considered as Additive White Gaussian Noise (AWGN) with zero mean and thus an averaging process is used to eliminate it. The estimator adaptively follows the fluctuations of the amplitude envelope in the time domain and adapts the size of the buffer N, with respect to the coherence time (Tc). Finally, based on the averaged estimated channel, the LS or the LMMSE equalizer is applied to the received signal in the frequency domain. Simulations clearly show that the performance of the AACE-LS is superior to the conventional LS estimator and is near to the performance of the LMMSE with no need of a prior knowledge of the statistics and the noise of the channel and thus if the channel is unknown to the receiver, the AACE is a good choice.

Original languageEnglish
Title of host publication2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015
PublisherIEEE Computer Society
Volume2015-August
ISBN (Electronic)9781479958658
DOIs
Publication statusPublished - 4 Aug 2015
Event10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting - Ghent, Belgium
Duration: 17 Jun 201519 Jun 2015
Conference number: 10

Conference

Conference10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting
Abbreviated titleBMSB 2015
CountryBelgium
CityGhent
Period17/06/1519/06/15

Fingerprint

performance comparison
Channel estimation
performance
Equalizers
Orthogonal frequency division multiplexing
fluctuation
symbol
recipient
statistics
Statistics
simulation
knowledge
time

Cite this

Zettas, S., Lazaridis, P. I., Zaharis, Z. D., Kasampalis, S., Prasad, N. R., Glover, I. A., & Cosmas, J. P. (2015). Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2. In 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015 (Vol. 2015-August). [7177273] IEEE Computer Society. https://doi.org/10.1109/BMSB.2015.7177273
Zettas, Spiridon ; Lazaridis, Pavlos I. ; Zaharis, Zaharias D. ; Kasampalis, Stylianos ; Prasad, Neeli R. ; Glover, Ian A. ; Cosmas, John P. / Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2. 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015. Vol. 2015-August IEEE Computer Society, 2015.
@inproceedings{ddc25865310e461bb0379c7769bfdbc3,
title = "Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2",
abstract = "In this paper the performance of the Adaptive Averaging Channel Estimator (AACE-LS) which is a modified Least Square (LS) estimator and the AACE-LMMSE which is a modified Linear Minimum Mean Error (LMMSE) estimator, are compared with respect to the conventional LS and the LMMSE estimators. The AACE is an estimator which is based on the averaging of the last N Scattered Pilots (SP) from the DVB-T2 model carried in the received OFDM symbols. The proposed method could in general be applied to any pilot based estimator. The noise introduced by the channel is considered as Additive White Gaussian Noise (AWGN) with zero mean and thus an averaging process is used to eliminate it. The estimator adaptively follows the fluctuations of the amplitude envelope in the time domain and adapts the size of the buffer N, with respect to the coherence time (Tc). Finally, based on the averaged estimated channel, the LS or the LMMSE equalizer is applied to the received signal in the frequency domain. Simulations clearly show that the performance of the AACE-LS is superior to the conventional LS estimator and is near to the performance of the LMMSE with no need of a prior knowledge of the statistics and the noise of the channel and thus if the channel is unknown to the receiver, the AACE is a good choice.",
keywords = "AWGN, channel estimation, Doppler shift, DVB-T2, LMMSE, LS, MSE, OFDM, Rayleigh, scattered pilots",
author = "Spiridon Zettas and Lazaridis, {Pavlos I.} and Zaharis, {Zaharias D.} and Stylianos Kasampalis and Prasad, {Neeli R.} and Glover, {Ian A.} and Cosmas, {John P.}",
year = "2015",
month = "8",
day = "4",
doi = "10.1109/BMSB.2015.7177273",
language = "English",
volume = "2015-August",
booktitle = "2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015",
publisher = "IEEE Computer Society",
address = "United States",

}

Zettas, S, Lazaridis, PI, Zaharis, ZD, Kasampalis, S, Prasad, NR, Glover, IA & Cosmas, JP 2015, Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2. in 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015. vol. 2015-August, 7177273, IEEE Computer Society, 10th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, Ghent, Belgium, 17/06/15. https://doi.org/10.1109/BMSB.2015.7177273

Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2. / Zettas, Spiridon; Lazaridis, Pavlos I.; Zaharis, Zaharias D.; Kasampalis, Stylianos; Prasad, Neeli R.; Glover, Ian A.; Cosmas, John P.

2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015. Vol. 2015-August IEEE Computer Society, 2015. 7177273.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2

AU - Zettas, Spiridon

AU - Lazaridis, Pavlos I.

AU - Zaharis, Zaharias D.

AU - Kasampalis, Stylianos

AU - Prasad, Neeli R.

AU - Glover, Ian A.

AU - Cosmas, John P.

PY - 2015/8/4

Y1 - 2015/8/4

N2 - In this paper the performance of the Adaptive Averaging Channel Estimator (AACE-LS) which is a modified Least Square (LS) estimator and the AACE-LMMSE which is a modified Linear Minimum Mean Error (LMMSE) estimator, are compared with respect to the conventional LS and the LMMSE estimators. The AACE is an estimator which is based on the averaging of the last N Scattered Pilots (SP) from the DVB-T2 model carried in the received OFDM symbols. The proposed method could in general be applied to any pilot based estimator. The noise introduced by the channel is considered as Additive White Gaussian Noise (AWGN) with zero mean and thus an averaging process is used to eliminate it. The estimator adaptively follows the fluctuations of the amplitude envelope in the time domain and adapts the size of the buffer N, with respect to the coherence time (Tc). Finally, based on the averaged estimated channel, the LS or the LMMSE equalizer is applied to the received signal in the frequency domain. Simulations clearly show that the performance of the AACE-LS is superior to the conventional LS estimator and is near to the performance of the LMMSE with no need of a prior knowledge of the statistics and the noise of the channel and thus if the channel is unknown to the receiver, the AACE is a good choice.

AB - In this paper the performance of the Adaptive Averaging Channel Estimator (AACE-LS) which is a modified Least Square (LS) estimator and the AACE-LMMSE which is a modified Linear Minimum Mean Error (LMMSE) estimator, are compared with respect to the conventional LS and the LMMSE estimators. The AACE is an estimator which is based on the averaging of the last N Scattered Pilots (SP) from the DVB-T2 model carried in the received OFDM symbols. The proposed method could in general be applied to any pilot based estimator. The noise introduced by the channel is considered as Additive White Gaussian Noise (AWGN) with zero mean and thus an averaging process is used to eliminate it. The estimator adaptively follows the fluctuations of the amplitude envelope in the time domain and adapts the size of the buffer N, with respect to the coherence time (Tc). Finally, based on the averaged estimated channel, the LS or the LMMSE equalizer is applied to the received signal in the frequency domain. Simulations clearly show that the performance of the AACE-LS is superior to the conventional LS estimator and is near to the performance of the LMMSE with no need of a prior knowledge of the statistics and the noise of the channel and thus if the channel is unknown to the receiver, the AACE is a good choice.

KW - AWGN

KW - channel estimation

KW - Doppler shift

KW - DVB-T2

KW - LMMSE

KW - LS

KW - MSE

KW - OFDM

KW - Rayleigh

KW - scattered pilots

UR - http://www.scopus.com/inward/record.url?scp=84946102234&partnerID=8YFLogxK

U2 - 10.1109/BMSB.2015.7177273

DO - 10.1109/BMSB.2015.7177273

M3 - Conference contribution

VL - 2015-August

BT - 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015

PB - IEEE Computer Society

ER -

Zettas S, Lazaridis PI, Zaharis ZD, Kasampalis S, Prasad NR, Glover IA et al. Performance comparison of LS, LMMSE and Adaptive Averaging Channel Estimation (AACE) for DVB-T2. In 2015 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2015. Vol. 2015-August. IEEE Computer Society. 2015. 7177273 https://doi.org/10.1109/BMSB.2015.7177273