Block Error Detection Driven Nonlinearity Compensation for Optical Fiber Communications

The perturbation-based nonlinearity compensation (NLC) method is considered in conjunction with a forward error correction (FEC) code that capable of detecting block errors. FEC decoding performed prior to the NLC, and NLC then only for blocks, could not be decoded correctly. total complexity thus dramatically reduced down 1% some cases w.r.t. standard, hard decision-directed decoding. Negligible increase required subsequent nonlinearity-compensated blocks. proposed achieves sometimes outperforms standard perturbation based at fraction overall complexity. Polar codes are used exemplify method.