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Asynchronous Periodic Interference Signals Cancellation in Frequency Domain

Satoshi DENNO, Yafei HOU

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Summary :

This paper proposes a novel interference cancellation technique that prevents radio receivers from degrading due to periodic interference signals caused by electromagnetic waves emitted from high power circuits. The proposed technique cancels periodic interference signals in the frequency domain, even if the periodic interference signals drift in the time domain. We propose a drift estimation based on a super resolution technique such as ESPRIT. Moreover, we propose a sequential drift estimation to enhance the drift estimation performance. The proposed technique employs a linear filter based on the minimum mean square error criterion with assistance of the estimated drifts for the interference cancellation. The performance of the proposed technique is confirmed by computer simulation. The proposed technique achieves a gain of more than 40dB at the higher frequency part in the band. The proposed canceler achieves such superior performance, if the parameter sets are carefully selected. The proposed sequential drift estimation relaxes the parameter constraints, and enables the proposed cancellation to achieve the performance upper bound.

Publication
IEICE TRANSACTIONS on Communications Vol.E105-B No.9 pp.1087-1096
Publication Date
2022/09/01
Publicized
2022/03/24
Online ISSN
1745-1345
DOI
10.1587/transcom.2021EBP3187
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

Authors

Satoshi DENNO
  Okayama University
Yafei HOU
  Okayama University

Keyword