摘要:
A method for computing a difference between a first propagation delay of a first transmission line and a second propagation delay of a second transmission line. The first and second transmission lines connect a first node and a second node of an optical network. The method comprises, at the second node: receiving first data from the first node along the first transmission line; computing a time offset between a first clock signal recovered from the first data and a second clock signal generated at the second node; receiving second data from the first node along the second transmission line; and computing the difference on the basis of the first data, the second data and the time offset.
摘要:
It is disclosed a method for correcting one or more errors in a codeword received at a network element of a communication network. The method comprises, before receiving the codeword, storing at the network element an error correction table comprising N correction information allowing to correct N correctable error patterns possibly affecting the codeword. The method further comprises, upon reception of the codeword at the network element: calculating a syndrome of the codeword; calculating an address applying an hash function to the calculated syndrome; using the calculated address for selecting in the error correction table one of the N correction information; and using the selected correction information for correcting one or more errors affecting the codeword.