TY - GEN
T1 - Bit loading-based irregular LDPC coded-modulation for high-speed optical communications
AU - Zou, Ding
AU - Djordjevic, Ivan B.
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/8/23
Y1 - 2016/8/23
N2 - In state-of-the-art fibre-optics communication systems, the forward error correction (FEC) and high-order constellation formats are employed. It is important to approach the Shannon limit by using turbo product codes (TPC) and low-density parity-check (LDPC) codes with soft-decision decoding (SDD) algorithms. In this paper, we first study the rate-adaptive irregular LDPC coding technique in wide range of code rates enabling the flexible adjustment according to channel conditions and the simulation results show an improved SNR gain of 0.15 ∼ 0.44 dB compared with regular LDPC codes under BPSK transmission. Then we propose a bit-loading rule for irregular LDPC codes combined with 16QAM and demonstrate additional 0.3 dB SNR improvements in low code rate regime, making it a viable solution for next generation high-speed optical communication systems.
AB - In state-of-the-art fibre-optics communication systems, the forward error correction (FEC) and high-order constellation formats are employed. It is important to approach the Shannon limit by using turbo product codes (TPC) and low-density parity-check (LDPC) codes with soft-decision decoding (SDD) algorithms. In this paper, we first study the rate-adaptive irregular LDPC coding technique in wide range of code rates enabling the flexible adjustment according to channel conditions and the simulation results show an improved SNR gain of 0.15 ∼ 0.44 dB compared with regular LDPC codes under BPSK transmission. Then we propose a bit-loading rule for irregular LDPC codes combined with 16QAM and demonstrate additional 0.3 dB SNR improvements in low code rate regime, making it a viable solution for next generation high-speed optical communication systems.
KW - fibre-optics and optical communications
KW - low-density parity-check (LDPC)
UR - http://www.scopus.com/inward/record.url?scp=84985904934&partnerID=8YFLogxK
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U2 - 10.1109/ICTON.2016.7550345
DO - 10.1109/ICTON.2016.7550345
M3 - Conference contribution
AN - SCOPUS:84985904934
T3 - International Conference on Transparent Optical Networks
BT - 2016 18th International Conference on Transparent Optical Networks, ICTON 2016
PB - IEEE Computer Society
T2 - 18th International Conference on Transparent Optical Networks, ICTON 2016
Y2 - 10 July 2016 through 14 July 2016
ER -