A blind EM-based carrier frequency offset estimation algorithm for OFDM signals

DOI

10.2991/icismme-15.2015.354How to use a DOI?

Keywords

OFDM; carrier frequency offset; blind; EM; second-order cyclostationarity

Abstract

Orthogonal frequency-division multiplexing (OFDM) system is very sensitive to the synchronization errors in digital communications, which should be compensated at the receiver. In this paper, we proposed an expectation maximum (EM) based blind carrier frequency offset (CFO) estimation algorithm for OFDM signals. By utilizing the second-order cyclostationarity of OFDM signals, a blind frequency offset estimation method is introduced as the initialization of EM algorithm. Without any prior information of the received signal, this method can realize the blind CFO estimation of OFDM after a few iterative process. Simulation results show that the proposed algorithm can effectively estimate the CFO at moderate and high signal to noise rate (SNR).

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yanyan Huang
AU  - Hua Peng
AU  - Members Non
PY  - 2015/07
DA  - 2015/07
TI  - A blind EM-based carrier frequency offset estimation algorithm for OFDM signals
BT  - Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy
PB  - Atlantis Press
SP  - 1712
EP  - 1719
SN  - 1951-6851
UR  - https://doi.org/10.2991/icismme-15.2015.354
DO  - 10.2991/icismme-15.2015.354
ID  - Huang2015/07
ER  -