A 40-to-56 Gb/s PAM-4 Receiver With Ten-Tap Direct Decision-Feedback Equalization in 16-nm FinFET

Im, Jungho; Dave, Freitas; Roldan, Arianne; Casey, Ronan; Chen, Stanley; Chou, Chuen-huei Adam; Cronin, Tim; Geary, Kevin; McLeod, Scott; Zhou, Lei; Ian, Zhuang; Han, Jaeduk; Lin, Sen; Upadhyaya, Parag; Geoff, Zhang; Frans, Yohan; Chang, Ken

doi:10.1109/jssc.2017.2749432

Cited by 51 publications

(27 citation statements)

References 2 publications

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“…The eye-diagrams clearly show that the equalization improves the quality of multi-channel transmission, and hence improved performance can be achieved as compared with the OCN without equalization. BER below 10 −5 and Q-factor of more than 5 are achieved through simulation, which shows better efficiency as compared with other models, which were presented in [14][15][16][17][18].…”

Section: Paper Contributionsmentioning

confidence: 83%

“…This is, however, a constantly improving number [17]. In this paper, multi-channel OCN is proposed, where CD and PMD losses are mitigated by implementing decision feed forward equalization (FFE) [18] and decision feedback equalization (DFE) [19] techniques. FFE and DFE techniques are combined in an electronic equalizer block to be used for dispersion mitigation in the presented model of an OCN.…”

Section: High Order Mode Fibersmentioning

confidence: 99%

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Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

et al. 2019

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Optical communication networks (OCNs) provide promising and cost-effective support for the ultra-fast broadband solutions, thus enabling them to address the ever growing demands of telecommunication industry such as high capacity and end users’ data rate. OCNs are used in both wired and wireless access networks as they offer many advantages over conventional copper wire transmission such as low power consumption, low cost, ultra-high bandwidth, and high transmission rates. Channel effects caused by light propagation through the fiber limits the performance, hence the data rate of the overall transmission. To achieve the maximum performance gain in terms of transmission rate through the OCN, an optical downlink system is investigated in this paper using feed forward equalizer (FFE) along with decision feedback equalizer (DFE). The simulation results show that the proposed technique plays a key role in dispersion mitigation in multi-channel optical transmission to uphold multi-Gb/s transmission. Moreover, bit error rate (BER) and quality factor (Q-factor) below 10 − 5 and above 5, respectively, are achieved with electrical domain equalizers for the OCN in the presence of multiple distortion effects showing the effectiveness of the proposed adaptive equalization techniques.

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Section: Paper Contributionsmentioning

confidence: 83%

Section: High Order Mode Fibersmentioning

confidence: 99%

Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

et al. 2019

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“…By utilizing advanced CMOS technologies and equalization techniques, operations at higher than 25 Gb/s even in severe loss conditions of more than 40 dB were achieved [ 9 , 10 , 11 ]. Recently, circuit designers attempt to overcome the limitations of copper by introducing a pulse-amplitude-modulation (PAM) signaling that can enhance the effective data rate for the same loss condition as the conventional binary signaling [ 12 , 13 , 14 , 15 ]. Figure 4 summarizes the binary and PAM-4 transceivers which recorded the fastest operating speed each year over the past 10 years [ 14 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Silicon Photonics For High-speed Data Communicationsmentioning

confidence: 99%

Review of CMOS Integrated Circuit Technologies for High-Speed Photo-Detection

Jeong

Bae

Jeong

2017

Sensors

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The bandwidth requirement of wireline communications has increased exponentially because of the ever-increasing demand for data centers and high-performance computing systems. However, it becomes difficult to satisfy the requirement with legacy electrical links which suffer from frequency-dependent losses due to skin effects, dielectric losses, channel reflections, and crosstalk, resulting in a severe bandwidth limitation. In order to overcome this challenge, it is necessary to introduce optical communication technology, which has been mainly used for long-reach communications, such as long-haul networks and metropolitan area networks, to the medium- and short-reach communication systems. However, there still remain important issues to be resolved to facilitate the adoption of the optical technologies. The most critical challenges are the energy efficiency and the cost competitiveness as compared to the legacy copper-based electrical communications. One possible solution is silicon photonics which has long been investigated by a number of research groups. Despite inherent incompatibility of silicon with the photonic world, silicon photonics is promising and is the only solution that can leverage the mature complementary metal-oxide-semiconductor (CMOS) technologies. Silicon photonics can be utilized in not only wireline communications but also countless sensor applications. This paper introduces a brief review of silicon photonics first and subsequently describes the history, overview, and categorization of the CMOS IC technology for high-speed photo-detection without enumerating the complex circuital expressions and terminologies.

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“…However, while the CTLE amplifies the high-frequency component of the signal, noise and crosstalk are potentially amplified. DFE can effectively eliminate inter-symbol interference caused by finite band, crosstalk, and reflection, but it is effective to eliminate the precursor [6,7,8,9]. Therefore, the combination of CTLE and DFE is widely used to eliminate inter-symbol interference at the receiver [10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

A 36 Gb/s wireline receiver with adaptive CTLE and 1-tap speculative DFE in 0.13 µm BiCMOS technology

Zhang

Yang

2020

IEICE Electron. Express

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This paper presents a 36 Gb/s receiver equalizer including an adaptive continuous time linear equalizer (CTLE), which is based on slope detection and a half-rate speculative decision feedback equalizer (DFE) in 0.13 µm BiCMOS technology for high speed serial link. The CTLE with middle frequency compensation can not only adjust the ratio of high frequency and low frequency components adaptively, but also provide a small amount of equalization to middle frequency range. A half-rate speculative DFE, which is connected to the back of the CTLE, can satisfy the time constraints and eliminate the residual intersymbol interference. The chip area including pads is about 1.2 mm 2 and the power consumption is about 750 mW under 3.3 V power supply. Measurement results show that the receiver chip can effectively equalize 24 dB loss at Nyquist frequency and a clear eye diagram can be captured at 36 Gb/s.

show abstract

A 40-to-56 Gb/s PAM-4 Receiver With Ten-Tap Direct Decision-Feedback Equalization in 16-nm FinFET

Cited by 51 publications

References 2 publications

Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

Adaptive Equalization for Dispersion Mitigation in Multi-Channel Optical Communication Networks

Review of CMOS Integrated Circuit Technologies for High-Speed Photo-Detection

A 36 Gb/s wireline receiver with adaptive CTLE and 1-tap speculative DFE in 0.13 µm BiCMOS technology

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