A 90nm CMOS DSP MLSD Transceiver with Integrated AFE for Electronic Dispersion Compensation of Multi-mode Optical Fibers at 10Gb/s

Agazzi, O.E.; Crivelli, D.E.; Hueda, Mario R.; Carrer, H.S.; Luna, G.; Nazemi, Ali; Grace, C.; Kobeissy, B.; Abidin, C.; Kazemi, Mahmoud; Kargar, Mahyar; Márquez, Carlos; Ramprasad, S.; Bollo, F.; Posse, V.; Wang, S.; Asmanis, G.; Eaton, Gareth R.; Swenson, N.; Lindsay, Thomas; Voois, P.

doi:10.1109/isscc.2008.4523142

Cited by 22 publications

(14 citation statements)

References 25 publications

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“…Some commercial implementations of VD at 10 Gb/s with 4, 8, and 16 states are available in 90 nm CMOS technology [31][32][33]. It should be possible to implement VD's with 64 or 128 states by using the available 28 nm technology.…”

Section: Endnotesmentioning

confidence: 99%

Maximum Likelihood Sequence Detection Receivers for Nonlinear Optical Channels

Maggio

Hueda

Agazzi³

2015

Journal of Electrical and Computer Engineering

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The space-time whitened matched filter (ST-WMF) maximum likelihood sequence detection (MLSD) architecture has been recently proposed (Maggio et al., 2014). Its objective is reducing implementation complexity in transmissions over nonlinear dispersive channels. The ST-WMF-MLSD receiver (i) drastically reduces the number of states of the Viterbi decoder (VD) and (ii) offers a smooth trade-off between performance and complexity. In this work the ST-WMF-MLSD receiver is investigated in detail. We show that the space compression of the nonlinear channel is an instrumental property of the ST-WMF-MLSD which results in a major reduction of the implementation complexity in intensity modulation and direct detection (IM/DD) fiber optic systems. Moreover, we assess the performance of ST-WMF-MLSD in IM/DD optical systems with chromatic dispersion (CD) and polarization mode dispersion (PMD). Numerical results for a 10 Gb/s, 700 km, and IM/DD fiber-optic link with 50 ps differential group delay (DGD) show that the number of states of the VD in ST-WMF-MLSD can be reduced ∼4 times compared to an oversampled MLSD. Finally, we analyze the impact of the imperfect channel estimation on the performance of the ST-WMF-MLSD. Our results show that the performance degradation caused by channel estimation inaccuracies is low and similar to that achieved by existing MLSD schemes (∼0.2 dB).

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Section: Endnotesmentioning

confidence: 99%

Maximum Likelihood Sequence Detection Receivers for Nonlinear Optical Channels

Maggio

Hueda

Agazzi³

2015

Journal of Electrical and Computer Engineering

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“…Also sometimes a variable gain amplifier is used to adjust signal swing. This adjustment of signal swing would properly drive ADC [6].…”

Section: Analog and Mixed-mode Frontendmentioning

confidence: 99%

Design and Simulation of High Speed, Low Powered ADC for Serial link Receiver

Aherrao¹,

Varade²

2013

IJCA

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This paper presents design & Simulation of High Speed, Low Powered ADC for Serial link Receiver. This ADC based receiver uses a low gain analog and mixed mode pre-equalizer in conjunction with the non-uniform reference levels for ADC. This combination compensates for both front-end nonideality and the channel response while maintaining low ADC resolution and hence enables low power consumption. This receiver is based on a low power design of Analog to Digital converter, thus lowering the power consumption of overall system. Tanner tool 13.0 is used for the simulation of the proposed design. From the simulation results it has been observed that the modules used in the proposed ADC lowers the power consumption.

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“…1/T, the design can be relaxed by providing MT seconds for the conversion process of the samples. One of the key challenges in the design of such time-interleaved ADCs is maintaining constant gain and sampling phase across the branches, and as a result, considerable calibration and processing circuitry is employed in such architectures [2]. However, once again, the focus of such extended efforts in calibration are not on minimizing the BER of the communication link, but rather in maximizing the signal to noise plus distortion ratio (SNDR) or in minimizing the total harmonic ͬ d͕Ɖ;ƚͿ ďŶ…”

Section: B Sampling-phase Optimized Ber-aware Adc Architecturesmentioning

confidence: 99%

System-assisted analog mixed-signal design

Shanbhag

Singer

2011

2011 Design, Automation &Amp; Test in Europe

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In this paper, we propose a system-assisted analog mixed-signal (SAMS) design paradigm whereby the mixed-signal components of a system are designed in an application-aware manner in order to minimize power and enhance robustness in nanoscale process technologies. In a SAMS-based communication link, the digital and analog blocks from the output of the information source at the transmitter to the input of the decision device in the receiver are treated as part of the composite channel. This comprehensive systems-level view enables us to compensate for impairments of not just the physical communication channel but also the intervening circuit blocks, most notably the analog/mixed-signal blocks. This is in stark contrast to what is done today, which is to treat the analog components in the transmitter and the analog front-end at the receiver as transparent waveform preservers. The benefits of the proposed system-aware mixed-signal design approach are illustrated in the context of analog-to-digital converters (ADCs) for high-speed links. CAD challenges that arise in designing system-assisted mixed-signal circuits are also described. 1

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A 90nm CMOS DSP MLSD Transceiver with Integrated AFE for Electronic Dispersion Compensation of Multi-mode Optical Fibers at 10Gb/s

Cited by 22 publications

References 25 publications

Maximum Likelihood Sequence Detection Receivers for Nonlinear Optical Channels

Maximum Likelihood Sequence Detection Receivers for Nonlinear Optical Channels

Design and Simulation of High Speed, Low Powered ADC for Serial link Receiver

System-assisted analog mixed-signal design

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