Digitally Enhanced DAC: Low-Resolution Digital Pre-Compensation for High Speed Optical Links

Yoffe, Yaron; Wohlgemuth, Eyal; Sadot, Dan

doi:10.1364/ofc.2018.m1c.6

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…This section provides a brief introduction to the DRE algorithm proposed by Yoffe in [8], for a more in-depth description, the reader is referred to [9], [10].…”

Section: Digital Resolution Enhancermentioning

confidence: 99%

“…This increase in quantization noise limits the performance. In order to increase the effective resolution of a DAC system, a DRE algorithm has been proposed in [8] which spectrally shapes the quantization noise due to digital-to-analog conversion. By reducing the power of the quantization noise inside the signal band, the effective resolution of the DAC system is artificially increased.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kramers-Kronig Receiver With Digitally Added Carrier Combined With Digital Resolution Enhancer

Hout

Heide

Okonkwo

2022

J. Lightwave Technol.

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“…This section provides a brief introduction to the DRE algorithm proposed by Yoffe in [8], for a more in-depth description, the reader is referred to [9], [10].…”

Section: Digital Resolution Enhancermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kramers-Kronig Receiver With Digitally Added Carrier Combined With Digital Resolution Enhancer

Hout

Heide

Okonkwo

2022

J. Lightwave Technol.

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show abstract

“…Reproduced from [18]. First, the system model is introduced after which a DRE implementation based on [9], [10] is described and next, an extended version of the DRE employing clipping is presented.…”

Section: Digital Resolution Enhancer Combined With Clippingmentioning

confidence: 99%

“…In [9], [10], a digital pre-compensation technique which includes a dynamic quantisation approach, named digital resolution enhancer (DRE), was proposed. In that work, the effective DAC resolution is increased by shaping the DAC quantization noise.…”

Section: Introductionmentioning

confidence: 99%

Digital Resolution Enhancer Employing Clipping for High-Speed Optical Transmission

Hout

Heide

Okonkwo

2020

J. Lightwave Technol.

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“…Digital pre-emphasis (DPE) has been studied in optical transmission system to alleviate the impact of BWL [3] . In general, high-resolution digital-to-analog converters (DACs), which can convert digital signals to complex analog signals, are critical for employing effective DPE [4] . The physical number of bits (PNOB) describes the resolution of the DACs.…”

Section: Introductionmentioning

confidence: 99%

Low-resolution optical transmission using joint shaping technique of signal probability and quantization noise

Huang

Shen

et al. 2023

Chin. Opt. Lett.

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In this paper, we propose and experimentally demonstrate a joint shaping technique to improve the performance of a lowresolution transmission system for the first time, to the best of our knowledge. The joint shaping technique combines probabilistic shaping (PS) and error feedback noise shaping (EFNS). In the 40-Gbaud intensity-modulation direct-detection (IM/DD) experimental transmission system, a bit-error-rate (BER) of 3.8 × 10 −3 can be achieved easily with the joint shaping at the physical number of bits (PNOB) of 3. In the 30-Gbaud dual polarization (DP) coherent experimental transmission system, a BER below 1 × 10 −3 is easily obtained with a 3-bit quantizer by using joint shaping. The optimization of the shaping degree is also analyzed.

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Digitally Enhanced DAC: Low-Resolution Digital Pre-Compensation for High Speed Optical Links

Cited by 13 publications

References 4 publications

Kramers-Kronig Receiver With Digitally Added Carrier Combined With Digital Resolution Enhancer

Kramers-Kronig Receiver With Digitally Added Carrier Combined With Digital Resolution Enhancer

Digital Resolution Enhancer Employing Clipping for High-Speed Optical Transmission

Low-resolution optical transmission using joint shaping technique of signal probability and quantization noise

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