| Jian-guo Yuan,Ya Xie,Lin Wang,Sheng Huang,Yong Wang.A novel concatenated code based on the improved SCG-LDPC code for optical transmission systems[J].Optoelectronics Letters,2013,9(1):42-44 |
| A novel concatenated code based on the improved SCG-LDPC code for optical transmission systems |
| Author Name | Affiliation | E-mail | | Jian-guo Yuan | Key Lab of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China | yuanjg@cqupt.edu.cn | | Ya Xie | Key Lab of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China | | | Lin Wang | Key Lab of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China | | | Sheng Huang | Key Lab of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China | | | Yong Wang | Key Lab of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China | |
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| Abstract: |
| Based on the optimization and improvement for the construction method of systematically constructed Gallager (SCG) (4, k) code, a novel SCG low density parity check (SCG-LDPC)(3969, 3720) code to be suitable for optical transmission systems is constructed. The novel SCG-LDPC (6561,6240) code with code rate of 95.1% is constructed by increasing the length of SCG-LDPC (3969,3720) code, and in a way, the code rate of LDPC codes can better meet the high requirements of optical transmission systems. And then the novel concatenated code is constructed by concatenating SCG-LDPC(6561,6240) code and BCH(127,120) code with code rate of 94.5%. The simulation results and analyses show that the net coding gain (NCG) of BCH(127,120)+SCG-LDPC(6561,6240) concatenated code is respectively 2.28 dB and 0.48 dB more than those of the classic RS(255,239) code and SCG-LDPC(6561,6240) code at the bit error rate (BER) of 10?7. |
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