BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:US/Eastern BEGIN:DAYLIGHT DTSTART:20210314T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20211107T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20210518T020113Z UID:6745861D-57AB-470B-B1E9-979F93D139E0 DTSTART;TZID=US/Eastern:20210517T130000 DTEND;TZID=US/Eastern:20210517T143000 DESCRIPTION:Wireless connectivity is becoming as essential as electricity i n our modern world. Although we would like to deliver wireless broadband s ervices everywhere\, the underlying physics makes it inherently complicate d: the signal power vanishes very quickly with the propagation distance an d is absorbed or scattered when interacting with objects in the way. Even when we have a “strong" signal\, only one in a million parts of the sign al energy is being received\, thus\, there is a huge room for improvements !\n\nWhat if we could tune the propagation environment to our needs? This is the main goal of reconfigurable intelligent surfaces\, which is an emer ging concept for beyond-5G communications. The idea is to support the tran smission from a source to a destination by deploying so-called metasurface s that can reconfigure how incident signal waves are scattered. These surf aces can be electronically configured to interact with the wireless signal s as if they had different shapes. For example\, it can be configured to b ehave as a parabolic reflector that is rotated to gather signal energy and re-radiates it as a beam focused on the receiver. This feature makes use of a new design dimension: we can not only optimize the transmitter and re ceiver but also control the channel. This might be a game-changer when com municating at mmWave and THz frequencies\, where the traditional propagati on conditions are particularly cumbersome.\n\nThis might sound like scienc e fiction but is theoretically possible. In this talk\, Dr. Emil will expl ain the fundamentals of this new technology from a signal processing persp ective. By deriving a signals-and-systems description\, we can look beyond the initial hype and understand what is actually happening when using rec onfigurable intelligent surfaces. Dr. Emil will also describe recent exper imental validations of the fundamentals. The talk will culminate in a desc ription of the main research challenges that need to be tackled in the com ing years.\n\nSpeaker(s): Emil Björnson\, \n\nMontreal\, Quebec\, Canada\ , Virtual: https://events.vtools.ieee.org/m/266024 LOCATION:Montreal\, Quebec\, Canada\, Virtual: https://events.vtools.ieee.o rg/m/266024 ORGANIZER:mansour.nch@ieee.org SEQUENCE:14 SUMMARY:Reconfigurable Intelligent Surfaces: A Signal Processing Perspectiv e URL;VALUE=URI:https://events.vtools.ieee.org/m/266024 X-ALT-DESC:Description: <br /><p>Wireless connectivity is becoming as essen tial as electricity in our modern world. Although we would like to deliver wireless broadband services everywhere\, the underlying physics makes it inherently complicated: the signal power vanishes very quickly with the pr opagation distance and is absorbed or scattered when interacting with obje cts in the way. Even when we have a &ldquo\;strong" signal\, only one in a million parts of the signal energy is being received\, thus\, there is a huge room for improvements!</p>\n<p>&nbsp\;</p>\n<p>What if we could tune the propagation environment to our needs? This is the main goal of reconfi gurable intelligent surfaces\, which is an emerging concept for beyond-5G communications. The idea is to support the transmission from a source to a destination by deploying so-called metasurfaces that can reconfigure how incident signal waves are scattered. These surfaces can be electronically configured to interact with the wireless signals as if they had different shapes. For example\, it can be configured to behave as a parabolic reflec tor that is rotated to gather signal energy and re-radiates it as a beam f ocused on the receiver. This feature makes use of a new design dimension: we can not only optimize the transmitter and receiver but also control the channel. This might be a game-changer when communicating at mmWave and TH z frequencies\, where the traditional propagation conditions are particula rly cumbersome.</p>\n<p>&nbsp\;</p>\n<p>This might sound like science fict ion but is theoretically possible. In this talk\, Dr. Emil will explain th e fundamentals of this new technology from a signal processing perspective . By deriving a signals-and-systems description\, we can look beyond the i nitial hype and understand what is actually happening when using reconfigu rable intelligent surfaces. Dr. Emil will also describe recent experimenta l validations of the fundamentals. The talk will culminate in a descriptio n of the main research challenges that need to be tackled in the coming ye ars.</p> END:VEVENT END:VCALENDAR