Design of Spatially Coupled Turbo Product Codes for Optical Communications
G. Montorsi, Sergio Benedetto · 2021
A new design is proposed for spatial coupled turbo product codes matching the challenging constraints of forward error correcting codes for optical communication applications. The design includes a simple encoding algorithm that matches the reduced rate of the code w.r.t. the block turbo product codes and keeps the frame structure of the original block product code by replacing part of the information bits with properly designed check on checks. Moreover, conditions are shown on the spatial coupling matrix on the code that allows to increase the minimum distance of the code, thus coping with the very low bit error probability required in optical communications.