Name
Title | ||
|---|---|---|
A 56-Gb/s PAM4 Receiver With Low-Overhead Techniques for Threshold and Edge-Based DFE FIR- and IIR-Tap Adaptation in 65-nm CMOS |
Abstract | ||
|---|---|---|
This paper presents a four-level pulse amplitude modulation (PAM4) quarter-rate receiver that efficiently compensates for moderate channel loss in a robust manner through background adaptation of the receiver thresholds and equalization taps. The front-end utilizes an input single-stage continuous-time linear equalizer (CTLE) to boost the main cursor and relax the pre-cursor cancellation requirement, requiring only a 2-tap pre-cursor feed-forward equalizer (FFE) on the transmitter side. A 2-tap decision feedback equalizer (DFE) follows that includes one finite impulse response (FIR) tap and one infinite impulse response (IIR) tap to cancel first post-cursor and long-tail inter-symbol interference (ISI), respectively. In addition to the per-slice main three data samplers, a single error sampler is utilized for background threshold control and an edge-based sampler performs both phase-locked loop (PLL)-based clock and data recovery (CDR) phase detection and generates information for background DFE tap adaptation. Fabricated in general purpose (GP) 65-nm CMOS, the 56-Gb/s receiver achieves 4.63 mW/Gb/s and compensates for up to 20.8-dB loss at a bit error rate (BER) < 10
<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−12</sup>
when operated with a 2-tap FFE transmitter. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1109/JSSC.2018.2881278 | IEEE Journal of Solid-State Circuits |
Keywords | Field | DocType |
Receivers,Decision feedback equalizers,Finite impulse response filters,Clocks,Transmitters,Bit error rate | Phase-locked loop,Transmitter,Equalization (audio),Control theory,Computer science,Infinite impulse response,Electronic engineering,Phase detector,Finite impulse response,Pulse-amplitude modulation,Bit error rate | Journal |
Volume | Issue | ISSN |
54 | 3 | 0018-9200 |
Citations | PageRank | References |
8 | 0.69 | 0 |
Authors | ||
10 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ashkan Roshan-Zamir | 1 | 19 | 4.24 |
| Takayuki Iwai | 2 | 8 | 1.36 |
| Yang-Hang Fan | 3 | 8 | 2.04 |
| Ankur N Kumar | 4 | 8 | 3.39 |
| haewoong yang | 5 | 19 | 2.55 |
| Lee Sledjeski | 6 | 8 | 0.69 |
| John Hamilton | 7 | 14 | 3.02 |
| Soumya Chandramouli | 8 | 8 | 0.69 |
| Arlo Aude | 9 | 8 | 1.03 |
| Samuel Palermo | 10 | 46 | 7.88 |