Title :
Transmission Performance of 4D 128SP-QAM With Forward Error Correction Coding
Author :
Alreesh, Saleem ; Schmidt-Langhorst, Carsten ; Frey, Felix ; Berenguer, Pablo Wilke ; Schubert, Colja ; Fischer, Johannes Karl
Author_Institution :
Fachgebiet Nachrichtentechnik, Tech. Univ. Berlin, Berlin, Germany
Abstract :
The performance of the 4-D 128SP-QAM format is experimentally investigated in a Nyquist-wavelength division multiplexing system for two different forward error correction (FEC) scenarios. Two soft-decisions FEC schemes are experimentally evaluated for 128SP-QAM, namely, a turbo product code (TPC) and a low-density parity-check (LDPC) code. The results show that after full convergence the LDPC code outperforms the TPC with respect to coding gain at a bit error ratio of 10-8. However, it requires more decoding iterations to achieve convergence toward an optimum performance state.
Keywords :
error statistics; forward error correction; optical communication; optical modulation; parity check codes; product codes; quadrature amplitude modulation; turbo codes; wavelength division multiplexing; 4D 128SP-QAM format; LDPC code; Nyquist-wavelength division multiplexing system; bit error ratio; coding gain; decoding iterations; forward error correction coding; low-density parity-check code; soft-decision FEC schemes; transmission performance; turbo product code; Bit error rate; Decoding; Forward error correction; Iterative decoding; Modulation; Optical fiber communication; Error correction codes; low-density parity-check code; modulation; optical communications; product code;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2391078
