Cross-link interference in the 5G cell search procedure: Observation and field experiments for mitigation

Autor: Juyeop Kim, Dawoon Lim, Ilmu Byun, Kyeongjun Ko
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: ICT Express, Vol 10, Iss 4, Pp 810-816 (2024)
Druh dokumentu: article
ISSN: 2405-9595
DOI: 10.1016/j.icte.2024.06.002
Popis: This paper presents field experiment results that illustrate the impact of cross-link interference on the cell search procedure in a 5G time division duplex system. We initially show how cross-link interference affects to the cell search procedure from an analytic aspect. An example of an experimental result provided in this paper shows how the user equipment wrongly estimates the symbol timing offset due to cross-link interference. Furthermore, we propose a modified cell search algorithm which is robust against the strong influence of cross-link interference. The proposed modification efficiently suppresses the effects of cross-link interference by applying selective energy normalization to the correlation process. The experimental results show that the modified algorithm can accurately estimate the symbol timing offset with a negligible increment in computation time.
Databáze: Directory of Open Access Journals