US Patent Issued to Ciena on Nov. 25 for "Probabilistic constellation shaping of multi-dimensional symbols for improved tolerance to nonlinear impairments" (Canadian, American Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,352, issued on Nov. 25, was assigned to Ciena Corp. (Hanover, Md.).

"Probabilistic constellation shaping of multi-dimensional symbols for improved tolerance to nonlinear impairments" was invented by Hamid Ebrahimzad (Ottawa), Michael Reimer (Stittsville, Canada), Vladimir S. Grigoryan (Elkridge, Md.) and Shahab Oveis Gharan (Ottawa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical transmitter device includes a digital signal processor (DSP) having digital hardware. The DSP is operative to generate shaped bits from a first set of information bits, and to apply a systematic forward error correction (FEC) scheme to encode the shaped bits and a ...