Concatenated QC-LDPC and SPC Codes for 100 Gbps Ultra Long-Haul Optical Transmission Systems

Kamiya, Norifumi; Shioiri, Satoshi

doi:10.1364/ofc.2010.othl2

Cited by 19 publications

(27 citation statements)

References 4 publications

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“…Recently, several LDPC based FEC schemes were introduced to apply into the optical transport systems. Djordjevic et al expended their efforts [3], and the demonstration of concatenated LDPC + RS FEC was performed by Mitsubishi Electric Corp. [4]- [6]. Mitsubishi works outperformed NCG of 10 dB at a post-FEC BER of 10 -15 .…”

Section: Introductionmentioning

confidence: 99%

Concatenated non-binary LDPC and HD-FEC codes for 100Gb/s optical transport systems

Choi

Lee

Kaneda³

et al. 2012

2012 IEEE International Symposium on Circuits and Systems

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Abstract-In this paper, we propose a soft-decision-based FEC scheme which is the concatenation of a non-binary LDPC (NB-LDPC) code and hard-decision FEC code having a compatibility with existing OTU-4 frame structure. The proposed concatenated NB-LDPC + RS frame structure is also provided and the entire frame size is 18,368 bytes. The proposed NB-LDPC(2304,2048) code over GF(2 4 ) provides a superior performance at the higher BER region and can be concatenated with HD-FEC code. The simulation result shows that the proposed concatenated NB-LDPC(2304,2048) and RS(255,239) FEC can provide a superior NCG performance over 10.3 dB at a post-FEC BER 10 -15 and over 10.8 dB with enhanced HD-FEC in the outer code. As a result, the proposed NB-LDPC codes are expected to be strong FEC candidates of soft-decision FEC for 100Gb/s optical transmission system.

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Section: Introductionmentioning

confidence: 99%

Concatenated non-binary LDPC and HD-FEC codes for 100Gb/s optical transport systems

Choi

Lee

Kaneda³

et al. 2012

2012 IEEE International Symposium on Circuits and Systems

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Section: Introductlonmentioning

confidence: 99%

“…For example, net coding gains (NCGs) 2: 10dB at a bit error rate (BER) of 10-15 with an overhead (OR) as low as possible (e.g., rv 20%) are mandatory for next generation optical transport networks (OTN) [1], [2], [3]. Given their superior performance and suitability for parallel processing, large block size low density parity check (LDPC) codes and turbo product (TP) codes have been considered as FEC coding schemes for ultra-high speed transmission systems.…”

Section: Introductlonmentioning

confidence: 99%

“…reduce complexity. For instance, several SCC FEC schemes for 100 Gigabits per second (Gb/s) OTN applications have been proposed (see [2], [3] and references therein). In [2] it is experimentally shown that a 20.5% concatenated code based on an inner LDPC and an outer Reed-Solomon (RS) code achieves an NCG of 9 dB at a BER=1O-13.…”

Section: Introductlonmentioning

confidence: 99%

“…The total overhead of this triple-concatenated approach is 20% and the expected NCG is 10.80 dB at a BER=1O-15. A concatenated LDPC+RS coding scheme with 20.5% OR and NCG=11.30 dB at a BER=1O-15 is proposed in [3].Practical applications of large block size outer codes to multigigabit systems have been precluded so far as a result of their prohibitive complexity for implementation in integrated circuits. To mitigate this problem, the use of short outer block codes with interleaving has been considered [6].…”

mentioning

confidence: 99%

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Efficient concatenated coding schemes for error floor reduction of LDPC and turbo product codes

Morero

Hueda

2012

2012 IEEE Global Communications Conference (GLOBECOM)

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This work introduces a novel serial code concatena tion (SeC) scheme to combat the error f100r problem experienced in iterated sparse graph-based error correcting codes such as turbo product (TP) codes and low density parity check (LDPC) codes. see has been widely used in the past to reduce the error f100r in iterative decoders. However, the main stumbling block for its practical application in high speed communication systems has been the need for long and complex outer codes. The use of short outer block codes with interleaving has been shown to provide a good tradeofl" between complexity and performance.Nevertheless, its application to next-generation ultra high-speed communication systems is still a major challenge as a result of the careful design of long complex interleavers needed to meet the requirements of these applications (e.g., a net coding gain > 10 dB at a bit error rate of 10-15 with an overhead of rv 20% for 100 Gb/s optical transport networks [1]). In this paper we present a new see scheme buHt from short outer block codes. Unlike previous proposals, the long interleaver is replaced by a simple block code combined with a novel encoding/decoding strategy.Based on this finding, we show that complexity and latency can be drastically reduced with negligible penalty. The see technique introduced here provides a new general framework for solving the error f100r problem induced by low-weight error patterns of any coding scheme. I. INTRODUCTlONPowerful forward error correction (FEC) codes are needed to satisfy the requirements imposed by future high speed com munication systems. For example, net coding gains (NCGs) 2: 10dB at a bit error rate (BER) of 10-15 with an overhead (OR) as low as possible (e.g., rv 20%) are mandatory for next generation optical transport networks (OTN) [1], [2], [3]. Given their superior performance and suitability for parallel processing, large block size low density parity check (LDPC) codes and turbo product (TP) codes have been considered as FEC coding schemes for ultra-high speed transmission systems.Because of the high implementation complexity of the large block size needed to achieve high NCGs, the use of serial concatenated codes (SCC) is required when aiming at an efficient very large scale integration (VLSI). SCC schemes based on an inner LDPC or TP code with a hard-decision based outer block code have shown to be a reasonable FEC solution to (i) provide NCG2: 10dB, (ii) mitigate the well known error floor problem of LDPC and TP codes I, and (iii) I Post-processing [1] , [4] and improved decoding algorithms [5] have also been proposed to combat the error floor problem. However, their design and performance evaluation may be difficult since the knowledge of both the weight and structure of the dominant error patterns is required. reduce complexity. For instance, several SCC FEC schemes for 100 Gigabits per second (Gb/s) OTN applications have been proposed (see [2], [3] and references therein). In [2] it is experimentally shown that a 20.5% concatenated code based o...

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Evaluation of block turbo codes for long-haul optical networks

Cho

Sung

2016

2016 22nd Asia-Pacific Conference on Communications (APCC)

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Concatenated QC-LDPC and SPC Codes for 100 Gbps Ultra Long-Haul Optical Transmission Systems

Cited by 19 publications

References 4 publications

Concatenated non-binary LDPC and HD-FEC codes for 100Gb/s optical transport systems

Concatenated non-binary LDPC and HD-FEC codes for 100Gb/s optical transport systems

Efficient concatenated coding schemes for error floor reduction of LDPC and turbo product codes

Evaluation of block turbo codes for long-haul optical networks

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