Multicarrier systems based on multistage layered IFFT structure
Date
2013
Authors
Zhang, J.A.
Luo, L.
Huang, X.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
IEEE Signal Processing Letters, 2013; 20(7):665-668
Statement of Responsibility
Conference Name
Abstract
This letter extends our previous work on layered inverse Fast Fourier Transform (IFFT) structure to a multistage layered IFFT structure where data symbols can input at different stages of the IFFT. We first showthat part of the IFFT in the transmitter of an OFDM system can be shifted to the receiver, while a conventional one-tap frequency-domain equalizer is still applicable. We then propose two IFFT split schemes based on decimation-in-time and decimation-in-frequency IFFT algorithms to enable interference-free symbol recovery with simple linear equalizers. Applications of the proposed schemes in multiple access communications are investigated. Simulation results demonstrate the effectiveness of the proposed schemes in improving bit-error-rate performance.
School/Discipline
Dissertation Note
Provenance
Description
Data source: Colour versions of one or more of the figures, 10.1109/LSP.2013.2262937
Access Status
Rights
Copyright 2013 IEEE