Evaluation of large girth LDPC codes for PMD compensation by turbo equalization

Lyubomir L. Minkov; Ivan B. Djordjevic; Lei Xu; Ting Wang; Franko Kueppers

doi:10.1364/OE.16.013450

Evaluation of large girth LDPC codes for PMD compensation by turbo equalization

Lyubomir L. Minkov, Ivan B. Djordjevic, Lei Xu, Ting Wang, Franko Kueppers

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Large-girth quasi-cyclic LDPC codes have been experimentally evaluated for use in PMD compensation by turbo equalization for a 10 Gb/s NRZ optical transmission system, and observing one sample per bit. Net effective coding gain improvement for girth-10, rate 0.906 code of length 11936 over maximum a posteriori probability (MAP) detector for differential group delay of 125 ps is 6.25 dB at BER of 10^-6. Girth-10 LDPC code of rate 0.8 outperforms the girth-10 code of rate 0.906 by 2.75 dB, and provides the net effective coding gain improvement of 9 dB at the same BER. It is experimentally determined that girth-10 LDPC codes of length around 15000 approach channel capacity limit within 1.25 dB.

Original language	English (US)
Pages (from-to)	13450-13455
Number of pages	6
Journal	Optics Express
Volume	16
Issue number	17
DOIs	https://doi.org/10.1364/OE.16.013450
State	Published - Aug 18 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OE.16.013450

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abstract = "Large-girth quasi-cyclic LDPC codes have been experimentally evaluated for use in PMD compensation by turbo equalization for a 10 Gb/s NRZ optical transmission system, and observing one sample per bit. Net effective coding gain improvement for girth-10, rate 0.906 code of length 11936 over maximum a posteriori probability (MAP) detector for differential group delay of 125 ps is 6.25 dB at BER of 10-6. Girth-10 LDPC code of rate 0.8 outperforms the girth-10 code of rate 0.906 by 2.75 dB, and provides the net effective coding gain improvement of 9 dB at the same BER. It is experimentally determined that girth-10 LDPC codes of length around 15000 approach channel capacity limit within 1.25 dB.",

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T1 - Evaluation of large girth LDPC codes for PMD compensation by turbo equalization

AU - Minkov, Lyubomir L.

AU - Djordjevic, Ivan B.

AU - Xu, Lei

AU - Wang, Ting

AU - Kueppers, Franko

PY - 2008/8/18

Y1 - 2008/8/18

N2 - Large-girth quasi-cyclic LDPC codes have been experimentally evaluated for use in PMD compensation by turbo equalization for a 10 Gb/s NRZ optical transmission system, and observing one sample per bit. Net effective coding gain improvement for girth-10, rate 0.906 code of length 11936 over maximum a posteriori probability (MAP) detector for differential group delay of 125 ps is 6.25 dB at BER of 10-6. Girth-10 LDPC code of rate 0.8 outperforms the girth-10 code of rate 0.906 by 2.75 dB, and provides the net effective coding gain improvement of 9 dB at the same BER. It is experimentally determined that girth-10 LDPC codes of length around 15000 approach channel capacity limit within 1.25 dB.

AB - Large-girth quasi-cyclic LDPC codes have been experimentally evaluated for use in PMD compensation by turbo equalization for a 10 Gb/s NRZ optical transmission system, and observing one sample per bit. Net effective coding gain improvement for girth-10, rate 0.906 code of length 11936 over maximum a posteriori probability (MAP) detector for differential group delay of 125 ps is 6.25 dB at BER of 10-6. Girth-10 LDPC code of rate 0.8 outperforms the girth-10 code of rate 0.906 by 2.75 dB, and provides the net effective coding gain improvement of 9 dB at the same BER. It is experimentally determined that girth-10 LDPC codes of length around 15000 approach channel capacity limit within 1.25 dB.

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Evaluation of large girth LDPC codes for PMD compensation by turbo equalization

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