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.:
Date of Patent:
Jan. 19, 2021
Filed:
May. 25, 2016
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Fabio Cavaliere, Pisa, IT;
Enrico Forestieri, Pisa, IT;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Digital data () is encoded to a set of five line symbols for optical transmission. The line symbols have amplitude values of 0, ±A1, ±A2, where |A2|>|A1|. A first binary value maps to the line symbols 0 and ±A2 and a second binary value maps to the line symbols ±A1. The amplitude values of the line symbols can be in the ratio A1:A2=1:sqrt(2). At a receiver, the received signal is photodetected to generate an electrical signal which can represent a set of three possible received symbols (RS1, RS2, RS3). Digital data () is recovered from the received symbols by comparing the electrical signal with a first amplitude threshold (TH1) and a second amplitude threshold (TH2).