Research Article
A Novel Method of Combined Window Function Construction Filter Applied to F-OFDM System
@INPROCEEDINGS{10.1007/978-3-030-94551-0_23, author={Mingxin Liu and Wei Xue and Yidong Xu and Wenjian Chen and Sergey B. Makarov}, title={A Novel Method of Combined Window Function Construction Filter Applied to F-OFDM System}, proceedings={Advanced Hybrid Information Processing. 5th EAI International Conference, ADHIP 2021, Virtual Event, October 22-24, 2021, Proceedings, Part I}, proceedings_a={ADHIP}, year={2022}, month={1}, keywords={F-OFDM Functional model Combination window Energy leakage}, doi={10.1007/978-3-030-94551-0_23} }- Mingxin Liu
Wei Xue
Yidong Xu
Wenjian Chen
Sergey B. Makarov
Year: 2022
A Novel Method of Combined Window Function Construction Filter Applied to F-OFDM System
ADHIP
Springer
DOI: 10.1007/978-3-030-94551-0_23
Abstract
The Orthogonal Frequency Division Multiplexing (OFDM) systems use rectangular pulse as baseband signal, and a main problem of the rectangular pulse is that its main lobe energy concentration is low and the out-of-band emissions (OOBE) is too high. The filtered orthogonal frequency division multiplexing (F-OFDM) system can make the F-OFDM system have a less energy radiation because of filtering in the time domain. Applying filtering operations can prevent signals from different communication scenarios from interfering with each other at the same time. In general, the filter used in the F-OFDM system is by applying a finite pulse to multiply the sinc function. In this study, a functional model is used, which can obtain a pulse that exhibits fast attenuation features in the frequency domain. The energy of this window function is mainly concentrated in the main pulse of the energy spectral density. This window function is combined with Hanning window and Blackman window to form a new window function form, truncating the sinc function, and constructing a filter. This filter has less energy leakage in F-OFDM system than filters constructed by other combined finite pulses to multiply the sinc function.
