Power-Delay-Profile-Based MMSE Channel Estimations for OFDM Systems

This paper deals with the problem of the channel estimation of orthogonal frequency division multiplexing (OFDM) signals transmitted through a time-varying fading channel. We show that an accurate power delay profile (PDP) estimator can be obtained by utilizing the cyclic redundancy induced by a cyc...

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Published in:Electronics (Basel) 2023-02, Vol.12 (3), p.510
Main Authors: Lim, Sungmook, Wang, Hanho, Ko, Kyunbyoung
Format: Article
Language:English
Subjects:
Communication
Estimation theory
Fading channels
Methods
Mobile communication systems
Orthogonal Frequency Division Multiplexing
Parameter estimation
Pilots
Redundancy
Vehicles
Wireless communication systems
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description This paper deals with the problem of the channel estimation of orthogonal frequency division multiplexing (OFDM) signals transmitted through a time-varying fading channel. We show that an accurate power delay profile (PDP) estimator can be obtained by utilizing the cyclic redundancy induced by a cyclic prefix (CP), which can be applicable to OFDM systems with insufficient pilot or training symbols (IEEE 802.11p/WAVE system), and then a least mean square error (MMSE) channel estimation scheme can be obtained in a manner based on the estimated PDP. The simulation results highlight the benefit of the proposed methods compared with the state-of-the-art standard and three achievable performance bounds.
doi_str_mv 10.3390/electronics12030510
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subjects Communication
Estimation theory
Fading channels
Methods
Mobile communication systems
Orthogonal Frequency Division Multiplexing
Parameter estimation
Pilots
Redundancy
Vehicles
Wireless communication systems
title Power-Delay-Profile-Based MMSE Channel Estimations for OFDM Systems
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