Broadband cancellation method in an adaptive co-site interference cancellation system

With the boom of communication systems on independent platforms (such as, airplanes and vessels), co-site interference has become prominent. Currently, extensive research has been conducted on the development of an adaptive co-site interference cancellation system (ACICS); however, the related inter...

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Bibliographic Details
Published inInternational journal of electronics Vol. 109; no. 5; pp. 854 - 874
Main Authors Jiang, Yunhao, Li, Xin
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 04.05.2022
Taylor & Francis LLC
Subjects
adaptive interference cancellation
Bandwidths
Broadband
Cancellation
cancellation bandwidth
Co-site interference
Codes
Communications systems
Delay
delay matching
Design optimization
Interference
Matching
Military communications
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Summary:With the boom of communication systems on independent platforms (such as, airplanes and vessels), co-site interference has become prominent. Currently, extensive research has been conducted on the development of an adaptive co-site interference cancellation system (ACICS); however, the related interference cancellation bandwidth characteristics have not been adequately investigated, thereby critically restricting the further optimisation of the ACICS design. In this study, the bandwidth signal calculation formula of the ACICS interference cancellation ratio is derived, and the quantitative relationships among the interference cancellation bandwidth, interference cancellation ratio, system gain, and delay-matching degree are analysed exhaustively. The results reveal that the higher the required interference cancellation ratio, the smaller is the interference cancellation bandwidth; the interference cancellation bandwidth can be enhanced to a limited degree by increasing the system gain. Furthermore, the interference cancellation bandwidth and the delay-matching distance follow an approximately inverse relation, and the interference cancellation bandwidth can be improved by delay matching. The nearest matching method can be employed for broadband interference. Finally, the conducted simulations and experiments validate the correctness and effectiveness of the theoretical analysis.
ISSN:0020-7217
1362-3060
DOI:10.1080/00207217.2021.1941295