Abstract
This paper investigates the channel estimation in an Orthogonal Frequency Division Multiplexing system under a fast-varying channel, by exploiting a frequency shifted complex exponential basis expansion models (CE-BEM). The conventional CE-BEM model suffers from power leakage and consequential modelling error floor, especially at the channel boundaries. The proposed BEM model reduces the leakage power efficiently by exploiting a fractional frequency on the coefficients of CE-BEM matrix. Numerical results show that the performance of the proposed channel modeling and coefficients estimation method are robust against various normalized Doppler frequency. The modeling error at the channel boundaries can be reduced substantially.
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.
