A Scattered Pilot OFDM Receiver with Equalization for Multipath Environments with Delay Difference Greater than Guard Interval

Satoshi SUYAMA; Masafumi ITO; Hiroshi SUZUKI; Kazuhiko FUKAWA

A Scattered Pilot OFDM Receiver with Equalization for Multipath Environments with Delay Difference Greater than Guard Interval

Satoshi SUYAMA, Masafumi ITO, Hiroshi SUZUKI, Kazuhiko FUKAWA

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OFDM transmission performance in mobile communications suffers severe degradation caused by multipath delay difference greater than the Guard Interval (GI). This is because the excess delay results in considerable Inter-Symbol Interference (ISI) between temporally adjacent symbols and Inter-Carrier Interference (ICI) among subcarriers in the same symbol. This paper proposes a robust OFDM receiver for the scattered pilot OFDM signal that can effectively suppress both ISI and ICI by using two types of equalization and a smoothed FFT-window. In order to verify the performance of the proposed receiver, computer simulations are conducted in accordance with the scattered pilot OFDM signal format of the Digital Terrestrial Television Broadcasting (DTTB). The simulation results demonstrate that the proposed receiver shows much better performance than the conventional receiver in multipath fading environments with the delay difference greater than GI duration.

Publication: IEICE TRANSACTIONS on Communications Vol.E86-B No.1 pp.275-282

Publication Date: 2003/01/01

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Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)

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Satoshi SUYAMA, Masafumi ITO, Hiroshi SUZUKI, Kazuhiko FUKAWA, "A Scattered Pilot OFDM Receiver with Equalization for Multipath Environments with Delay Difference Greater than Guard Interval" in IEICE TRANSACTIONS on Communications, vol. E86-B, no. 1, pp. 275-282, January 2003, doi: .
Abstract: OFDM transmission performance in mobile communications suffers severe degradation caused by multipath delay difference greater than the Guard Interval (GI). This is because the excess delay results in considerable Inter-Symbol Interference (ISI) between temporally adjacent symbols and Inter-Carrier Interference (ICI) among subcarriers in the same symbol. This paper proposes a robust OFDM receiver for the scattered pilot OFDM signal that can effectively suppress both ISI and ICI by using two types of equalization and a smoothed FFT-window. In order to verify the performance of the proposed receiver, computer simulations are conducted in accordance with the scattered pilot OFDM signal format of the Digital Terrestrial Television Broadcasting (DTTB). The simulation results demonstrate that the proposed receiver shows much better performance than the conventional receiver in multipath fading environments with the delay difference greater than GI duration.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e86-b_1_275/_p

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@ARTICLE{e86-b_1_275,
author={Satoshi SUYAMA, Masafumi ITO, Hiroshi SUZUKI, Kazuhiko FUKAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Scattered Pilot OFDM Receiver with Equalization for Multipath Environments with Delay Difference Greater than Guard Interval},
year={2003},
volume={E86-B},
number={1},
pages={275-282},
abstract={OFDM transmission performance in mobile communications suffers severe degradation caused by multipath delay difference greater than the Guard Interval (GI). This is because the excess delay results in considerable Inter-Symbol Interference (ISI) between temporally adjacent symbols and Inter-Carrier Interference (ICI) among subcarriers in the same symbol. This paper proposes a robust OFDM receiver for the scattered pilot OFDM signal that can effectively suppress both ISI and ICI by using two types of equalization and a smoothed FFT-window. In order to verify the performance of the proposed receiver, computer simulations are conducted in accordance with the scattered pilot OFDM signal format of the Digital Terrestrial Television Broadcasting (DTTB). The simulation results demonstrate that the proposed receiver shows much better performance than the conventional receiver in multipath fading environments with the delay difference greater than GI duration.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - A Scattered Pilot OFDM Receiver with Equalization for Multipath Environments with Delay Difference Greater than Guard Interval
T2 - IEICE TRANSACTIONS on Communications
SP - 275
EP - 282
AU - Satoshi SUYAMA
AU - Masafumi ITO
AU - Hiroshi SUZUKI
AU - Kazuhiko FUKAWA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2003
AB - OFDM transmission performance in mobile communications suffers severe degradation caused by multipath delay difference greater than the Guard Interval (GI). This is because the excess delay results in considerable Inter-Symbol Interference (ISI) between temporally adjacent symbols and Inter-Carrier Interference (ICI) among subcarriers in the same symbol. This paper proposes a robust OFDM receiver for the scattered pilot OFDM signal that can effectively suppress both ISI and ICI by using two types of equalization and a smoothed FFT-window. In order to verify the performance of the proposed receiver, computer simulations are conducted in accordance with the scattered pilot OFDM signal format of the Digital Terrestrial Television Broadcasting (DTTB). The simulation results demonstrate that the proposed receiver shows much better performance than the conventional receiver in multipath fading environments with the delay difference greater than GI duration.
ER -