Channel estimation with Zadoff–Chu sequences in the presence of phase errors

Autor:	Sven Wittig, Michael Peter, Wilhelm Keusgen
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	channel estimation correlation methods discrete Fourier transforms phase noise sequences wireless channels Electrical engineering. Electronics. Nuclear engineering TK1-9971
Zdroj:	Electronics Letters, Vol 59, Iss 20, Pp n/a-n/a (2023)
Druh dokumentu:	article
ISSN:	1350-911X 0013-5194
DOI:	10.1049/ell2.12996
Popis:	Abstract Due to their perfect periodic autocorrelation property, Zadoff–Chu sequences are often used as stimulus signals in the measurement of radio channel responses. In this letter, the cross‐correlation of a linear shift‐invariant system's response to a Zadoff–Chu sequence is derived for the case that a multiplicative perturbation such as phase noise is present at its output. The perturbation signal is shown to incur a spurious discrete Fourier transform, thus degrading the correlation's peak to sidelobe ratio. The implications for the performance limits of channel measurement systems are discussed.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/00f31643481149ef9e7941dd28b721c4 Zobrazit plný text záznamu Plný text View record in DOAJ