Integer Codes Correcting Single Errors and Random Asymmetric Errors within a Byte

In optical networks without optical amplifiers (ONWOAs) photons may fade or fail to be detected, but new photons cannot be generated. Hence, under normal conditions, only 1→0 errors can occur. However, in some situations, the photodetector may generate a false 0→1 error. This mostly occurs in cases when the dark current is higher than specified. With this in mind, in this paper, the authors present a class of codes suitable for use in ONWOAs using self-synchronous scramblers. The presented codes can correct single errors and random asymmetric (1→0) errors within a b-bit byte. Unlike classical codes, these codes use integer and lookup table operations. As a result, their interleaved version, implemented on a dual-core 3.0 GHz processor, achieves the theoretical throughput above the operating rate of 10G networks.