Signal preconditioning using feedforward equalizers in ADC-based data links
Abstract/Contents
- Abstract
- As the data rates for high-speed wireline transceivers continue to increase, intersymbol interference (ISI) due to channel loss is becoming more pronounced and multiple techniques have been suggested to address this issue. One technique that has recently been gaining popularity is the ADC-based receiver. In ADC-based receivers, a digital feedforward equalizer (FFE) is used in conjunction with a decision feedback equalizer (DFE) to equalize the channel and recover the data. However, in order to recover the data with a high fidelity, a power-hungry ADC is needed to digitize the signal. Recent work has shown that an analog receive-side FFE (RX-FFE) prior to the ADC can reduce the required ADC resolution while achieving the same BER. In order to obtain a net improvement for the system, the RX-FFE must be implemented with low power consumption, low noise, and small chip area. In this thesis, an RX-FFE is demonstrated that meets these requirements and outperforms state-of-the-art designs. The RX-FFE is constructed entirely with low-noise and power-efficient analog-inverter transconductors and capacitors, avoiding the use of area-intensive inductors. The delay element is implemented as a single-path Pade-inspired delay shown to be equivalent to the first-order Pade delay in terms of RX-FFE performance. The proof-of-concept RX-FFE is demonstrated to reduce the signal dynamic range by 2x resulting in a 1 bit ADC resolution relaxation. The total power consumed is less than 26 mW with less than 0.62 mVrms output noise for all coefficient values and an area of only 0.003 mm^2 in 40 nm CMOS.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2016 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Boesch, Ryan | |
|---|---|---|
| Associated with | Stanford University, Department of Electrical Engineering. | |
| Primary advisor | Murmann, Boris | |
| Thesis advisor | Murmann, Boris | |
| Thesis advisor | Horowitz, Mark (Mark Alan) | |
| Thesis advisor | Narasimha, Madihally | |
| Advisor | Horowitz, Mark (Mark Alan) | |
| Advisor | Narasimha, Madihally |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Ryan Boesch. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2016. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2016 by Ryan Boesch
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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