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

Rodrigo Carvajal, Karen Rivas

Resultado de la investigación: Contribución a los distintos tipos de conferenciaArtículo

Resumen

© 2017 IEEE. 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.
Idioma originalInglés
Páginas1-4
Número de páginas4
DOI
EstadoPublicada - 26 dic 2017
Evento2017 IEEE 9th Latin-American Conference on Communications, LATINCOM 2017 -
Duración: 26 dic 2017 → …

Conferencia

Conferencia2017 IEEE 9th Latin-American Conference on Communications, LATINCOM 2017
Período26/12/17 → …

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  • Citar esto

    Carvajal, R., & Rivas, K. (2017). On maximum likelihood estimation of channel impulse response and carrier frequency offset in OFDM systems. 1-4. Papel presentado en 2017 IEEE 9th Latin-American Conference on Communications, LATINCOM 2017, . https://doi.org/10.1109/LATINCOM.2017.8240188