Kandou Bus Applauds the OIF on Publication of CEI 4.0

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The Optical Internetworking Forum (OIF) has published their CEI 4.0 Interoperability Agreement (IA) that contains a clause using Ensemble Non-Return-to-Zero (ENRZ) signaling, which was developed and first proposed by Kandou Bus

Kandou Bus CEO, Dr. Amin Shokrollahi said, > We are happy and proud that the OIF members saw fit to include an ENRZ-based clause in the new CEI 4.0 IA. Kandou has worked for many years to develop this disruptive form of signaling that delivers more bits for less power and can operate over challenging channels.

A new clause in the CEI 4.0 IA, CEI-56G-ENRZ-LR, defines a multi-vendor interoperability specification for chip-to-chip communication across backplane and cabled channels between semiconductor devices on different line cards. These Long Reach (LR) channels are among the most challenging used because of their high loss. At the same time, the power constraints for such links are still tight, making this among the industry’s hardest problems. 

ENRZ (see here) is in a new class of signaling called Chord™ signaling and transmits 3 bits on 4 wires. One of ENRZ’s main advantages over competing modulation techniques, such as PAM-4, is its resilience to Inter-Symbol-Interference (ISI), a prevalent impairment found in chip-to-chip links. The low power consumption of ENRZ links is a direct consequence of its native ISI resilience since less power is consumed in cleaning up the signals than in alternative solutions.  This ability of ENRZ is likely to have been an important factor in its inclusion in CEI 4.0.    Dr. Shokrollahi continued: > I am so proud of my entire team.  A new theory of signaling, excellence in implementation, wonderful enablement of customers, and strong industry advocacy were all needed to bring this day to fruition.

About Kandou Bus S.A.

Bandwidth and power challenges for next-generation links are being addressed by the industry’s leading standards organizations such as OIF, IEEE and JEDEC. Kandou advocates for industry standards, contributing its technology and support via membership and board positions within these organizations. 

Headquartered in Lausanne, Switzerland and founded in 2011, Kandou Bus is an innovative interface technology company specializing in the the invention, design, license and implementation of unmatched chip-to-chip link solutions.  Kandou’s Chord™ signaling technology lowers power consumption and improves overall performance of semiconductors, unlocking new capabilities in electronic devices and systems.  http://www.kandou.com. 

About the OIF

The OIF facilitates the development and deployment of interoperable networking solutions and services. Members collaborate to drive Implementation Agreements (IAs) and interoperability demonstrations to accelerate and maximize market adoption of advanced internetworking technologies. OIF work applies to optical and electrical interconnects, optical component and network processing technologies, and to network control and operations including software defined networks and network function virtualization. The OIF actively supports and extends the work of national and international standards bodies. Launched in 1998, the OIF is the only industry group uniting representatives from across the spectrum of networking, including many of the world’s leading service providers, system vendors, component manufacturers, software and testing vendors. Information on the OIF can be found at www.oiforum.com.

OIF Press Contact:

Deborah Porchivina PAPR for the OIF Email: Deborah@papr.com Mobile: 415-272-0943 deborah@papr.com

Chord is a trademark of Kandou Bus. All other trademarks or registered trademarks are properties of their respective owners.