公开(公告)号：US20250132830A1

公开(公告)日：2025-04-24

申请号：US18917791

申请日：2024-10-16

Applicant: Nokia Solutions and Networks Oy

Inventor： Rajiv BODDEDA ,  Sebastien Bigo ,  Jèrèmie Renaudier ,  Oriol Bertran Pardo ,  Sylvain Almonacil

IPC: H04B10/11 ,  H04B10/516 ,  H04B10/61 ,  H04L1/00

Abstract: Apparatus and methods are provided for transmitting and/or for receiving data over a free-space optical link. An optical data transmitter generates duplicate digital data streams carrying a same digital data sequence with a relative temporal offset and mixes them onto two different polarization channels according to a preselected linear mixing rule. An optical data receiver demodulates first and second digital streams from the two polarization channels and unmixes the demodulated data, to produce first and second output digital data streams according to a preselected linear unmixing rule. The receiver applies a quality indicator to select between segments of the respective output digital data streams that correspond to the same transmitted data sequence.