Abstract
Residual carrier frequency offset accumulates with time and leads to bit errors on later symbols in an OFDM packet. This paper is concerned with two methods for residual carrier frequency offset estimation, based on the DFT demodulated data of OFDM data symbols at the pilot subcarriers. One method computes an estimate from the phase difference between the data in two (or more) consecutive symbols. The other one, which was recently proposed, finds an estimate from the phase of the data in one (or more) symbol. The latter method requires the a priori knowledge or an estimate of the channel while the former does not. The two methods have been compared by first-order perturbation analysis and simulation. A flaw of the latter method has been identified. Preference should be given to the former method in terms of estimation accuracy and ease of implementation in practical scenarios.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
