Columbia University

Keynote at IFIP WWIC 2018

ifipProf. Zussman gave a keynote talk at the 16th International Conference on Wired/Wireless Internet Communications (IFIP WWIC 2018).

The keynote focused on the COSMOS and FlexICoN projects. The abstract is below and the presentation slides are available here.

The COSMOS Wireless Testbed and Full Duplex Experimentation

Abstract: This talk will provide an overview of the COSMOS testbed, that will be deployed as part of the NSF Platforms for Advanced Wireless Research (PAWR) program, and of one of the first testbed experiments that will focus on Full Duplex wireless.

COSMOS (Cloud-Enhanced Open Software-Defined Mobile-Wireless Testbed for City-Scale Deployment) will be deployed in West Harlem (New York City) by Rutgers, Columbia and NYU in partnership with NYC, CCNY, U. Arizona, and Silicon Harlem. It targets the technology “sweet spot” of ultra-high bandwidth and ultra-low latency, a capability that will enable a broad new class of applications including augmented/virtual reality and cloud-based autonomous vehicles. Realization of such high bandwidth/low latency wireless applications involves research not only on faster radio links, but also on the system as a whole including aspects such as spectrum use, networking, and edge computing. Hence, the key enabling technologies will include Software Defined Radios, mmWave radios (at 28 GHz), optical/SDN x-haul network, edge cloud, and testbed control & management software. The deployment will incorporate 9 Large nodes, about 40 Medium nodes, and about 200 small nodes in an area of ~1 sq mile.

One of the first COSMOS pilot experiments will focus on Full-Duplex (FD) wireless, since FD communication, namely, simultaneous transmission and reception on the same frequency channel, can substantially improve spectrum efficiency. Within the Columbia Full-duplex Wireless: From Integrated Circuits to Networks (FlexICoN) project we have been focusing on Integrated Circuit (IC) implementations that are appropriate for mobile and small-form-factor devices. We will discuss the FlexICoN Gen-1 FD transceiver that has been integrated in the ORBIT testbed. Then, we will discuss the FlexICoN Gen-2 FD transceiver and recent analytical and measurement results. Both the Gen-1 and Gen-2 transceivers will be integrated in the COSMOS testbed to allow experimental evaluations of FD-related algorithms at the higher layers.

The COSMOS testbed design and deployment is joint work with the COSMOS team ( The full duplex results are based on joint work with Tingjun Chen, Harish Krishnaswamy, Jelena Diakonikolas, Mahmood Baraani Dastjerdi, and Guy Farkash (Columbia University)