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A novel super-FEC code based on concatenated code for high-speed long-haul optical communication systems

OPTICS COMMUNICATIONS 2007年第2期273卷 421-427页

作者： Yuan, Jianguo Ye, Wenwei Jiang, Ze Mao, Youju Wang, Wei Chongqing Univ Posts & Telecommun Inst Opt Fiber Commun Chongqing 400065 Peoples R China Chongqing Univ Coll Optoelect Engn Chongqing 400044 Peoples R China

The structures of the novel super forward error correction (Super-FEC) code type based on the concatenated code for high-speed long-haul optical communication systems are studied in this paper. The Reed-Solomon (RS) (255,239) + Bose-Chaudhuri-Hocguenghem (BCH) (1023,963) concatenated code is presented after the characteristics of the concatenated code and the two Super-FEC code type presented in ITU-T G.975.1 have theoretically been analyzed, the simulation result shows that this novel code type, compared with the RS (255,239) + convolutional-self-orthogonal-code (CSOC) (k(0)/n(0) = 6/7,J= 8) code in ITU-T G.975.1, has a lower redundancy and better error-correction capabilities, and its net coding gain (NCG) at the third iteration is 0.57 dB more than that of RS (255,239) + CSOC (k(0)/n(0) = 6/7,J= 8) code in ITU-T G.975.1 at the third iteration for the bit error rate (BER) of 10(-12). Therefore, the novel code type can better be used in long-haul, larger capacity and higher bit-rate optical communication systems. Furthermore, the design and implementation of the novel concatenated code type are also discussed. (c) 2007 Elsevier B.V. All rights reserved.

关键词： concatenated code optical communication systems super forward error correction net coding gain

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The effect of block interleaving in an LDPC-turbo concatenated code

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ETRI JOURNAL 2006年第5期28卷 672-675页

作者： Lee, Sang Hoon Joo, Eon Kyeong Kyungpook Natl Univ Sch Elect Engn & Comp Sci Taegu South Korea

The effect of block interleaving in a low density parity check (LDPC)-turbo concatenated code is investigated in this letter Soft decoding can be used in an LDPC code unlike the conventional Reed-Solomon (RS) code. Thus, an LDPC-turbo concatenated code can show better performance than the conventional RS-turbo concatenated code. Furthermore, the performance of an LDPC-turbo code can be improved by using a block interleaver between the LDPC and turbo code. The average number of iterations in LDPC decoding can also be reduced b a block interleaver.

关键词： block interleaver turbo code LDPC code concatenated code

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The Influence of A Particular Error Pattern on the Error Correction Performance of RS plus Convolutional concatenated code

The Influence of A Particular Error Pattern on the Error Cor...

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International Conference on Computer Systems, Electronics and Control (ICCSEC)

作者： Wang, Dongming Zhang, Junyi Res Inst China Elect Technol Grp Corp 54 Inst Educ Shijiazhuang Hebei Peoples R China

ISBN: (纸本)9781538635735

Our paper introduces a typical concatenated code, analyzes its performance about the error correcting capability and possible vulnerability. Moreover, an error pattern is proposed based on its coding structure. We also made a simulation to compare the influence to the decoding performance of concatenated code between the proposed error pattern and the traditional random error patterns. The simulation results show that the effect degree of erroneous pattern proposed on the concatenated code is higher than that of the random error pattern.

关键词： concatenated code Error-Correcting Error Pattern

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Iterative Soft Decoding of Single Parity Check Convolutional concatenated code 46

Iterative Soft Decoding of Single Parity Check Convolutional...

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IEEE 46th Conference on Local Computer Networks (LCN)

作者： Chen, Junmei Chen, Hao Li, Zongpeng Wuhan Univ Sch Comp Sci Wuhan 430000 Peoples R China Huawei Technol Network Technol Lab Nanjing 210012 Peoples R China Huawei Nanjing Peoples R China

ISBN: (纸本)9780738124766

By establishing a single parity check relationship between convolutional codewords, a concatenated code, termed single parity check convolutional code (SPC-CC), is proposed. By jointly en/decoding the SPC and CC, as well as carefully allocating redundant information between the pair, we can improve BER more promptly during iterative decoding. Each codeword in SPC-CC consists of only one SISO decoder, which generates one extrinsic information. The key is to simulate another using extrinsic information from other decoders. Then iteratively feed back extrinsic information to each other in a manner similar to a Turbo engine. We design en/decoding scheme of the SPC-CC, and then analyze its performance and complexity. Simulation results show that SPC-CC can effectively improve communication reliability with a moderate complexity. In addition, thanks to SPC code, SPC-CC can correct packet erasures due to fading or interference.

关键词： reliable communication concatenated code Turbo Principle single parity check code redundant allocation

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Serial and Parallel concatenated code for MC DS CDMA Using Verilog HDL 3

Serial and Parallel Concatenated Code for MC DS CDMA Using V...

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3rd International Conference on Communications and Signal Processing (ICCSP)

作者： Saravanakumar, S. Nagarajan, V. Adhiparasakthi Engn Coll Dept ECE VLSI Design Melmaruvathur India Adhiparasakthi Engn Coll Dept ECE Melmaruvathur India

ISBN: (纸本)9781479933587

Multi Carrier Direct Sequence code Division Multiple Access(MC DS CDMA) technique is the future generation mobile communication system and to access technology in future advances. Serial and Parallel concatenated codes are used for correcting the errors in data transmission. We proposed hybrid concatenated code for MC DS CDMA structure and estimate parameters like memory and design time. Use of interleavers are reduce the burst errors between outer and inner code of encoding and decoding operation in the MC DS CDMA model. Modelsim synthesis technology used for simulate the entire model and Verilog Hardware Description Languages (HDL) are used for design the codes of MC DS CDMA systems.

关键词： MC DS CDMA concatenated code Interleaver Verilog HDL

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Forward error correction concatenated code in DWDM systems

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Frontiers of Optoelectronics 2008年第Z1期1卷 20-24页

作者： Jianguo YUAN Ze JIANG Youju MAO Wenwei YE Key Lab of Optical Fiber Communications Technology Chongqing University of Posts and Telecommunications

The three concatenated coding schemes of the inner-outer type, the parallel type and the consecutive type to improve the current forward error correction(FEC)coding technologies are proposed for dense wavelengthdivision multiplexing(DWDM) systems, after introducing the development trend of DWDM optical communication systems. The concatenated code is theoretically *** theoretical analyses and simulation results show that inner-outer concatenated code has a greater redundancy and the decoding of parallel concatenated code is too complex. However, consecutive concatenated code is superior coding scheme with advantages such as better error correction performance, moderate redundancy and easy implementation, therefore it could be better used in high-speed and long-haul DWDM systems.

关键词： dense wavelength-division multiplexing (DWDM) system super forward error correction (Super-FEC) concatenated code net coding gain (NCG)

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A binary block concatenated code based on two convolutional codes

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Electronic Notes in Discrete Mathematics 2017年 57卷 219-224页

作者： Zhilin, Igor Zyablov, Victor Zigangirov, Dmitry Lab. #3 Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute) Moscow Russian Federation

关键词： active distance concatenated code convolutional code free distance minimum distance

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A double serial concatenated code using CRC-aided error correction for highly reliable communication

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COMPUTER NETWORKS 2022年 216卷 1页

作者： Chen, Junmei Chen, Hao Li, Zongpeng Wuhan Univ Sch Comp Sci Wuhan Peoples R China Network Technol Lab Huawei Technol Nanjing Peoples R China

Highly Reliable Communication (HRC) is an emerging paradigm for meeting the quality of service requirements of new applications such as intelligent vehicle networking and industrial Internet. HRC brings challenges to channel coding and multiple access. Various channel coding techniques have been proposed to improve reliability, but often suffer from limited reliability and high decoding complexity. This work presents a double serial concatenated code using CRC-aided error correction, abbreviated as (DSCEC)-E-3, to improve reliability and reduce complexity. The encoding scheme is a double serial concatenated code, with the cascade of a set of CRC encoders, a linear block encoder, a series of interleavers, and a set of convolutional encoders. The decoding scheme consists of two modules: (i) decoding of serial concatenated codes, which includes the decoding of single parity check convolutional code (SPC-CC) and the decoding of Reed-Solomon convolutional code (RSCC) for intra-block error correction at the physical layer to control BER;(H) decoding of CRC-aided linear error correction, which can effectively identify, locate and correct error bits at the inter-block level to solve the problem of block loss caused by residual errors at the physical layer. Simulation results show that the joint scheme can effectively improve communication reliability while reducing complexity.

关键词： Highly reliable communication concatenated code Turbo principle Single parity check code Reed-Solomon code CRC code

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Improved FEC code Based on concatenated code for Optical Transmission Systems

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Semiconductor Photonics and Technology 2006年第3期12卷 211-216页

作者： YUAN Jian-guo JIANG Ze MAO You-ju College of Optoelectronics Engineering Chongqing University Chongqing 400044 CHN Institute of Optical Fiber Communications Chongqing University of Posts ＆ Telecommunications Chongqing 400065 CHN

The improved three novel schemes of the super forward error correction （super-FEC） concatenated codes are proposed after the development trend of long-haul optical transmission systems and the defects of the existing FEC codes have been analyzed. The performance simulation of the Reed-Solomon（RS）＋ Bose-Chaudhuri-Hocguenghem（BCH） inner-outer serial concatenated code is implemented and the conceptions of encoding/decoding the parallel-concatenated code are presented. Furthermore, the simulation results for the RS（255,239）＋RS（255,239） code and the RS（255,239）＋RS（255,223） code show that the two consecutive concatenated codes are a superior coding scheme with such advantages as the better error correction, moderate redundancy and easy realization compared to the classic RS（255,239） code and other codes, and their signal to noise ratio gains are respectively 2-3 dB more than that of the RS（255,239）code at the bit error rate of 1 × 10^-13. Finally, the frame structure of the novel consecutive concatenated code is arranged to lay a firm foundation in designing its hardware.

关键词： Optical transmission systems Super forward error correction concatenated code Frame structure

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Study on New concatenated code in WDM Optical Transmission Systems

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Semiconductor Photonics and Technology 2007年第2期13卷 126-131页

作者： YUAN Jian-guo JIANG Ze MAO You-ju YE Wen-wei College of Optoelectronics Engineering Chongqing University Chongqing 400044 CHN Institute of Optical Fiber Communications Chongqing University of Posts ＆ Telecommunications Chongqing 400065 CHN

A new concatenated code of RS（255,239）＋BCH（2 040,1 930） code to he suitable for WDM optical transmission systems is proposed. The simulation resuhs show that this new concatenated code. compared with the RS（255,239）4-CSOC（k0/n0=6/7, J= 8） code in ITU-TG. 75.1, has a lower redundancy and better error-correction performance, furthermore, its net coding gain（NCG） is respectively 0. 46 dB, 0.43 dB morethanthatofRS（255,239）＋CSOC（k0/n0= 6/7, J= 8） code and BCH（3860,3824）＋BCH （2 040,1 930） code in ITU TG. 75. 1 at the third iteration for the bit error rate（BER） of 10^-12. Therefore, the new super forward error correction（Super-FEC） concatenated code can be better used in ultra long-haul, ultra large-capacity and ultra high-speed WDM optical communication systems.

关键词： concatenated code WDM optical transmission systems super forward error correction net coding gain

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