The State University of New York

Samir Ranjan Das

Jon P Longtin

Vyas Sekar

Petar Djurić

Yasha Karimi

Max Curran

Ryoo Jihoon

Athalye Akshay

Himanshu Gupta

Milutin Stanacevic

Navid Hamedazimi

Milutin Stanaćević

Navid Hamed Azimi

A method, system and apparatus are provided for estimating at least one characteristic of a wireless communication channel between at least two passive backscattering radio frequency (RF) nodes, the method including measuring backscatter channel state information (BCSI) during communication between the at least two passive RF nodes; estimating, by at least one RF node of the at least two passive RF nodes, the at least one characteristic of the wireless communication channel based on the measured BCSI.

Method for passive wireless channel estimation in radio frequency network and apparatus for same

A method, system and apparatus are provided for estimating characteristics of a wireless communication channel between at least two passive radio frequency (RF) nodes. Backscatter channel state information (BCSI) is measured during communication between the at least two passive RF nodes using the wireless communication channel. An RF node aggregates the measured BCSI and the aggregated BSCI is analyzed to detect at least one activity of a plurality of activities.

A reconfigurable free-space optical inter-rack network includes a plurality of server racks, each including at least one switch mounted on a top thereof, where each top-mounted switch includes a plurality of free-space-optic link connector, each with a free-space optical connection to a free-space-optic link connector on another top-mounted switch, a single ceiling mirror above the plurality of server racks that substantially covers the plurality of server racks, wherein the single ceiling mirror redirects optical connections between pairs of free-space-optic link connectors to provide a clear lines-of-sight between each pair of connected free-space-optic link connectors, and a controller that preconfigures a free-space optical network connecting the plurality of server racks by establishing connections between pairs of free-space-optic link connectors, and that reconfigures connections between pairs of free-space-optic link connectors in response to network traffic demands and events.

Reconfigurable wireless data center network using free-space optics

Disclosed is a data transmission system having a multi-node wireless network in a geographic area within which a plurality of nodes are positioned, having a plurality of directional antennas fixed to respective nodes of the plurality of nodes, with each node including at least two directional antennas to transmit and receive in respective sectors emanating from each respective node. When yaw of a node exceeds a threshold amount, revised routing information is provided to identify preferred directional antennas for use in future link transmissions.

Inter-node communication method and system

Growing community of inventors

Melville, NY, United States of America

Samir Ranjan Das