BROWSE
Detail
Journal Article
Novel Digital Cancelation Method in Presence of Harmonic Self-Interference
- Authors
- Hyungsik Ju, Donghyuk Gwak, Yuro Lee, Tae-Joong Kim
- Issue Date
- 2017-04
- Citation
- ETRI Journal, v.39, no.2, pp.245-254
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- In-band full-duplex (IFD) communication has recently attracted a great deal of interest because it potentially provides a two-fold spectral efficiency increase over half-duplex communications. In this paper, we propose a novel digital self-interference cancelation (DSIC) algorithm for an IFD communication system in which two nodes exchange orthogonal frequency-division multiplexing (OFDM) symbols. The proposed DSIC algorithm is based on the least-squares estimation of a self-interference (SI) channel with block processing of multiple OFDM symbols, in order to eliminate the fundamental and harmonic components of SI induced through the practical radio frequency devices of an IFD transceiver. In addition, the proposed DSIC algorithm adopts discrete Fourier transform processing of the estimated SI channel to further enhance its cancelation performance. We provide a minimum number of training symbols to estimate the SI channel effectively. The evaluation results show that our proposed DSIC algorithm outperforms a conventional algorithm.
- KSP Keywords
- Block processing, Communication system, Digital self, Full-Duplex(FuDu), Half-Duplex(HD), Harmonic components, In-band full duplex, Least Squares(LS), Least-squares estimation, Radio Frequency(RF), Si channel
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
