Open AccessSubcarrier interpolation and DFT channel estimation in ultra-wideband systems
Author(s) -
Xing Wei,
Min Huang,
Wu Luo
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1237/2/022023
Subject(s) - subcarrier , interpolation (computer graphics) , channel (broadcasting) , orthogonal frequency division multiplexing , computer science , interference (communication) , wideband , algorithm , frequency domain , estimation , electronic engineering , telecommunications , engineering , computer vision , frame (networking) , systems engineering
Channel estimation algorithm is one of the key research directions in UWB systems. For the ECMA368 standard, there is a wave interference problem in channel estimation. This paper constructs a low-order ZP-OFDM-FAST model for improving channel estimation performance. The interpolation problem of virtual zero subcarriers is studied, and the interpolation DFT channel estimation method is proposed. Finally, a method of frequency domain instantaneous filtering is given.