LS channel estimation assisted from chirp sequences in OFDM communications

Jia Chin Lin; Chi Sheng Lin

doi:10.1109/WIRELESSVITAE.2009.5172454

LS channel estimation assisted from chirp sequences in OFDM communications

Jia Chin Lin, Chi Sheng Lin

Department of Communication Engineering

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

5 Scopus citations

Abstract

A least-squares (LS) channel estimation technique is investigated to extend pseudo-random-postfix orthogonal-frequency-division multiplexing (PRP-OFDM) techniques onto mobile applications in rapidly time-variant frequency-selective fading environments. The proposed method exploits self-interference cancellation to effectively reduce a variety of interferences; and thus, it can overcome not only frequency-selectivity caused by multipath reception but also time-selectivity caused by mobility; in particular, OFDM communications are often expected to operate in the presence of both wide Doppler spread and long delay spread. As a result, the proposed technique can achieve lower channel estimation errors and lower bit error probabilities than the conventional techniques exploiting a time-averaging method. Since sufficiently long PRP sequences have never been found in the previous works regarding PRP-OFDM, an application of the proposed technique using chirp signals for mobile PRP-OFDM communication is investigated because the chirp signals exhibit good training properties.

Original language	English
Title of host publication	Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009
Pages	222-226
Number of pages	5
DOIs	https://doi.org/10.1109/WIRELESSVITAE.2009.5172454
State	Published - 2009
Event	2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009 - Aalborg, Denmark Duration: 17 May 2009 → 20 May 2009

Publication series

Name	Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009

Conference

Conference	2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009
Country/Territory	Denmark
City	Aalborg
Period	17/05/09 → 20/05/09

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10.1109/WIRELESSVITAE.2009.5172454

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Lin, J. C., & Lin, C. S. (2009). LS channel estimation assisted from chirp sequences in OFDM communications. In Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009 (pp. 222-226). Article 5172454 (Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009). https://doi.org/10.1109/WIRELESSVITAE.2009.5172454

Lin, Jia Chin ; Lin, Chi Sheng. / LS channel estimation assisted from chirp sequences in OFDM communications. Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009. 2009. pp. 222-226 (Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009).

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title = "LS channel estimation assisted from chirp sequences in OFDM communications",

abstract = "A least-squares (LS) channel estimation technique is investigated to extend pseudo-random-postfix orthogonal-frequency-division multiplexing (PRP-OFDM) techniques onto mobile applications in rapidly time-variant frequency-selective fading environments. The proposed method exploits self-interference cancellation to effectively reduce a variety of interferences; and thus, it can overcome not only frequency-selectivity caused by multipath reception but also time-selectivity caused by mobility; in particular, OFDM communications are often expected to operate in the presence of both wide Doppler spread and long delay spread. As a result, the proposed technique can achieve lower channel estimation errors and lower bit error probabilities than the conventional techniques exploiting a time-averaging method. Since sufficiently long PRP sequences have never been found in the previous works regarding PRP-OFDM, an application of the proposed technique using chirp signals for mobile PRP-OFDM communication is investigated because the chirp signals exhibit good training properties.",

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booktitle = "Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009",

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Lin, JC & Lin, CS 2009, LS channel estimation assisted from chirp sequences in OFDM communications. in Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009., 5172454, Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009, pp. 222-226, 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009, Aalborg, Denmark, 17/05/09. https://doi.org/10.1109/WIRELESSVITAE.2009.5172454

LS channel estimation assisted from chirp sequences in OFDM communications. / Lin, Jia Chin; Lin, Chi Sheng.
Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009. 2009. p. 222-226 5172454 (Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009).

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

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AB - A least-squares (LS) channel estimation technique is investigated to extend pseudo-random-postfix orthogonal-frequency-division multiplexing (PRP-OFDM) techniques onto mobile applications in rapidly time-variant frequency-selective fading environments. The proposed method exploits self-interference cancellation to effectively reduce a variety of interferences; and thus, it can overcome not only frequency-selectivity caused by multipath reception but also time-selectivity caused by mobility; in particular, OFDM communications are often expected to operate in the presence of both wide Doppler spread and long delay spread. As a result, the proposed technique can achieve lower channel estimation errors and lower bit error probabilities than the conventional techniques exploiting a time-averaging method. Since sufficiently long PRP sequences have never been found in the previous works regarding PRP-OFDM, an application of the proposed technique using chirp signals for mobile PRP-OFDM communication is investigated because the chirp signals exhibit good training properties.

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Lin JC, Lin CS. LS channel estimation assisted from chirp sequences in OFDM communications. In Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009. 2009. p. 222-226. 5172454. (Proceedings of the 2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009). doi: 10.1109/WIRELESSVITAE.2009.5172454

LS channel estimation assisted from chirp sequences in OFDM communications

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