US 8,078,929 B2 · Optical line terminal and optical network terminal

Abstract

There are provided an optical line terminal and an optical network terminal, which can process with the same forward error correction code even if an EFC frame size of G-PON descending signals is different between two types of 255 and 120. The optical network terminal includes a photoelectric converter, a PON transceiver, and a physical layer. The PON transceiver includes an error correction code encoder including a shortening compensation parameter table and a shortening compensation calculator for calculating compensated data by referring to the shortening compensation parameter table. Also the optical line terminal includes a photoelectric converter, a PON transceiver, and a physical layer. The optical line terminal includes an error correction code encoder including a shortening compensation parameter table and a shortening compensation calculator for calculating compensated data by referring to the shortening compensation parameter table.

Claims8

Dependent claims

An optical line terminal comprising:

a photoelectric converter;
a PON transceiver;
and
a physical layer,
wherein said PON transceiver includes an error correction code encoder including:
a shortening compensation parameter table showing corresponding relation between a forward error correction code frame size and shortening compensation parameters;
and
a shortening compensation calculator for receiving input data, obtaining the shortening compensation parameters from the shortening compensation parameter table in accordance with the forward error correction code frame size, and calculating compensated data based on the input data and the shortening compensation parameters.

5 more elements

Dependencies are inferred from the claim text.

Optical line terminal and optical network terminal

Life of this patent

Optical line terminal and optical network terminal

Life of this patent

Abstract

Claims8