A code-aided carrier synchronization algorithm based on improved nonbinary low-density parity-check codes

doi:10.1007/s11801-016-6089-z

Home > Archive>Volume 12, Issue 5, 2016 >353-357. DOI:10.1007/s11801-016-6089-z

A code-aided carrier synchronization algorithm based on improved nonbinary low-density parity-check codes
DOI:
                        10.1007/s11801-016-6089-z
                    
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                        BAI Cheng-linBAI Cheng-lin
Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
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CHENG Zhi-huiCHENG Zhi-hui
Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
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Affiliation:Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
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Abstract:

In order to further improve the carrier synchronization estimation range and accuracy at low signal-to-noise ratio (SNR), this paper proposes a code-aided carrier synchronization algorithm based on improved nonbinary low-density parity-check (NB-LDPC) codes to study the polarization-division-multiplexing coherent optical orthogonal frequency division multiplexing (PDM-CO-OFDM) system performance in the cases of quadrature phase shift keying (QPSK) and 16 quadrature amplitude modulation (16-QAM) modes. The simulation results indicate that this algorithm can enlarge frequency and phase offset estimation ranges and enhance accuracy of the system greatly, and the bit error rate (BER) performance of the system is improved effectively compared with that of the system employing traditional NB-LDPC code-aided carrier synchronization algorithm.

Reference

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BAI Cheng-lin, CHENG Zhi-hui. A code-aided carrier synchronization algorithm based on improved nonbinary low-density parity-check codes[J]. Optoelectronics Letters,2016,12(5):353-357

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Received:April 12,2016
Revised:May 03,2016
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Online: September 06,2016
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