On maximum likelihood estimation of channel impulse response and carrier frequency offset in OFDM systems

Rodrigo Carvajal, Karen Rivas, Juan C. Aguero

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper, we address the problem of estimating channel impulse response (CIR) and carrier frequency offset (CFO) in OFDM systems utilizing the method of maximum likelihood. When the CFO is small, Moose's technique for CFO estimation is accurate and numerically efficient. However, if the CFO is high, there are no straightforward solutions for its estimation. We show that the log-likelihood function of the CIR and the CFO can be concentrated in one variable (the CFO), and that its estimation can be accurately carried out by first performing a coarse line search and then applying Newton's method at a low computational cost. We illustrate the benefits of our proposal via numerical simulations.

Original languageEnglish
Title of host publication2017 IEEE 9th Latin-American Conference on Communications, LATINCOM 2017
EditorsCarlos E. Velasquez-Villada
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781538620984
DOIs
StatePublished - 26 Dec 2017
Externally publishedYes
Event9th IEEE Latin-American Conference on Communications, LATINCOM 2017 - Guatemala City, Guatemala
Duration: 8 Nov 201710 Nov 2017

Publication series

Name2017 IEEE 9th Latin-American Conference on Communications, LATINCOM 2017
Volume2017-January

Conference

Conference9th IEEE Latin-American Conference on Communications, LATINCOM 2017
Country/TerritoryGuatemala
CityGuatemala City
Period8/11/1710/11/17

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