logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12671498 B1

PDFFull Text
Date of Patent:
Jun. 30, 2026

Filed:

Mar. 11, 2020

Optical receiving apparatus and optical receiving method using changing coefficient values for fast fourier transform

Applicant:

Ntt, Inc., Tokyo, JP;

Inventors:

Kengo Horikoshi, Musashino, JP;

Masanori Nakamura, Musashino, JP;

Seiji Okamoto, Musashino, JP;

Etsushi Yamazaki, Musashino, JP;

Asuka Matsushita, Musashino, JP;

Takeo Sasai, Musashino, JP;

Assignee:

NTT, Inc., Tokyo, JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Andrew Jordan

Int. Cl.
CPC ...
H04B 10/2525 (2013.01); H04B 10/61 (2013.01);
U.S. Cl.
CPC ...
H04B 10/2525 (2013.01); H04B 10/6161 (2013.01);
Abstract

An optical reception apparatus includes a wavelength dispersion compensation unit that performs wavelength dispersion compensation individually on reception signals that are obtained by receiving, by a coherent detecting scheme, an optical signal modulated in a subcarrier modulation scheme and by performing division on a subcarrier-by-subcarrier basis, and a plurality of delay compensation units that compensate for a delay between reception signals at different subcarriers among the reception signals at subcarriers obtained by the wavelength dispersion compensation.

Find Patent Forward Citations

Horikoshi, Kengo. (2026). Optical receiving apparatus and optical receiving method using changing coefficient values for fast fourier transform (U.S. Patent No. 12671498). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12671498

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…