TY - GEN
T1 - Narrowband interference mitigation in angle-frequency direct product domain in UWB receivers
AU - Kikuta, Kazutaka
AU - Hirose, Akira
PY - 2017/1/17
Y1 - 2017/1/17
N2 - The high precision ranging using ultra wideband (UWB) requires mitigation of interference from other communication systems, in particular from narrowband interference (NBI). There have been many studies of adaptive notch filters (ANF) to cope with NBI at various frequencies. This paper proposes a novel adaptive NBI mitigation method which uses the direction of arrival as well as frequency selectivity. We use an array antenna and apply the optimal weight which directs nulls to large-power waves. This realizes NBI suppression because of the lower power spectrum of the UWB pulse signal. Our method does not need any iteration such as feedback loop, and thus requires only a small calculation cost. Simulations demonstrate that the proposed method is applicable to variously directional and multiple-frequency NBIs.
AB - The high precision ranging using ultra wideband (UWB) requires mitigation of interference from other communication systems, in particular from narrowband interference (NBI). There have been many studies of adaptive notch filters (ANF) to cope with NBI at various frequencies. This paper proposes a novel adaptive NBI mitigation method which uses the direction of arrival as well as frequency selectivity. We use an array antenna and apply the optimal weight which directs nulls to large-power waves. This realizes NBI suppression because of the lower power spectrum of the UWB pulse signal. Our method does not need any iteration such as feedback loop, and thus requires only a small calculation cost. Simulations demonstrate that the proposed method is applicable to variously directional and multiple-frequency NBIs.
KW - Power inversion
KW - Ultra wideband (UWB)
UR - http://www.scopus.com/inward/record.url?scp=85013168480&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85013168480&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85013168480
T3 - ISAP 2016 - International Symposium on Antennas and Propagation
SP - 502
EP - 503
BT - ISAP 2016 - International Symposium on Antennas and Propagation
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st International Symposium on Antennas and Propagation, ISAP 2016
Y2 - 24 October 2016 through 28 October 2016
ER -