A Survey on FEC Codes for 100 G and Beyond Optical Networks

Tzimpragos, Georgios; Kachris, Christoforos; Djordjević, Ivan B.; Cvijetic, Milorad; Soudris, Dimitrios; Tomkos, Ioannis

doi:10.1109/comst.2014.2361754

Cited by 116 publications

(57 citation statements)

References 48 publications

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“…There is a number of advanced coding schemes, such as turbo codes, concatenated codes, low-density parity-check (LDPC) coding of different flavors, etc. that have been proposed so far [15]. We should outline that the coding gain for the next generation of FEC schemes is expected to exceed 12 dB while keeping coding rate for not falling below 0.8.…”

Section: Adaptive Approach In Multidimensional Schemesmentioning

confidence: 99%

Multidimensional aspects of ultra high speed optical networking

Cvijetic

Djordjević

2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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Multidimensional approach in optical channel construction and parallelization in signal processing are the key factors in enabling high spectral efficiency of optical transmission links and the overall throughput increase in optical networks. Multidimensionality is mainly related to employment of advanced modulation and multiplexing schemes operating in combination with the advanced coding and detection techniques. In this paper we discuss the key multidimensional principles that can be used not only of the information capacity increase, but also as enablers of the elastic and dynamic networking.

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Section: Adaptive Approach In Multidimensional Schemesmentioning

confidence: 99%

Multidimensional aspects of ultra high speed optical networking

Cvijetic

Djordjević

2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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“…The same transceiver can operate in metro, long haul, ultra long haul and submarine links with optimal performance and high power efficiency. Towards this end, FEC codes with medium-high net coding gains (NCG) (e.g., N CG = [9 − 13]dB) at a bit error rate (BER) of 10 −15 and variable overhead (OH) (e.g., OH = [7 − 60]%) are mandatory (e.g., see [13] and references therein). Furthermore, the demand for higher symbol rates (e.g., 45 or 64GBd) on long fiber links prompts the implementation of complex and flexible Bulk Chromatic Dispersion (BCD) equalizers capable of compensating a wide range of chromatic dispersion (e.g., [0 − 250] ns/nm) [4], [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Design Tradeoffs and Challenges in Practical Coherent Optical Transceiver Implementations

Morero¹,

Castrillon

Aguirre³

et al. 2016

J. Lightwave Technol.

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This tutorial discusses the design and ASIC implementation of coherent optical transceivers. Algorithmic and architectural options and tradeoffs between performance and complexity/power dissipation are presented. Particular emphasis is placed on flexible (or reconfigurable) transceivers because of their importance as building blocks of software defined optical networks. The article elaborates on some advanced digital signal processing (DSP) techniques such as iterative decoding, which are likely to be applied in future coherent transceivers based on higher order modulations. Complexity and performance of critical DSP blocks such as the forward error correction decoder and the frequency-domain bulk chromatic dispersion equalizer are analyzed in detail. Other important ASIC implementation aspects including physical design, signal and power integrity, and design for testability, are also discussed.

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“…The growth is mainly because of the expanding use of bandwidth-intense video services such as YouTube, Netflix, and IPTV [1]. Recent research efforts focus on scaling the current architectures with interconnections operating at 40-100 Gbps to 400-1000 Gbps for the next generation of optical communication systems [2][3][4][5][6]. The cumulative effect of physical layer impairments in the optical link limits the performance, particularly in high-speed communication [7].…”

Section: Introductionmentioning

confidence: 99%

“…Further, digital signal processing (DSP) combined with high-speed high-resolution analog-to-digital converters (ADCs) in coherent-based receivers mitigate the effects of fiber impairments and improve the overall optical link performance in long-haul applications. The presence of the ADC also provides enhanced link performance using soft-decision decoding [2,6,7]. For instance, by using soft-decision decoding, data transmission over a link of up to 9000 km at 100 Gbps per wavelength channel was demonstrated [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Low-Bit Soft-Decision Error Correction in Optical Front Ends

Fard

Cowan

Liboiron-Ladouceur

2015

J. Opt. Commun. Netw.

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A novel methodology for analyzing the advantageous decoding performance of multibranch configurations of low-bit optical soft-decision forward error correction receivers is presented. The decoding performance and noise behavior of three front-end schemes are evaluated and compared. Arising from a multiple-branch configuration, the concept of inconsistency in the decoder (thermometer code) is presented and used to optimize decoding performance. The experimentally validated methodology considers both optically amplified long-haul and short-reach applications.Index Terms-Optical interconnects; Optical receiver front end; Soft-decision decoding.http://dx.

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A Survey on FEC Codes for 100 G and Beyond Optical Networks

Cited by 116 publications

References 48 publications

Multidimensional aspects of ultra high speed optical networking

Multidimensional aspects of ultra high speed optical networking

Design Tradeoffs and Challenges in Practical Coherent Optical Transceiver Implementations

Analysis of Low-Bit Soft-Decision Error Correction in Optical Front Ends

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