The Amp Hour

Shahriar Discusses 5G

Listen Later

Welcome back, Shahriar Shahramian from The Signal Path!

  • Shahriar has been a guest on the show twice before
    • Episode 228
    • We posted the audio from Dave's in-person interview with Shahriar
    • Bell Labs bought by Nokia
    • Shahriar works at the Murray Hill campus
    • He is the head of the mmwave ASIC research group
    • Research group only has 8 people
    • Have multiple designs happening at once
    • Task switching between optical and RF chips
    • Software stuff at Bell Labs research is wide ranging
    • Moore's law for RF
    • Going beyond the Marconi era: Doing phased array transmissions
    • Cramming more bits per hertz
    • Going from 4G to 5G requires going to higher frequencies
    • Transmitting GHz frequencies in all directions would blow the link budget
    • Would require Phased Arrays in order to transmit only power to reach individual devices
    • 256 transmitter and 128 receiver antennas in order to beamform
    • Beamforming in 5G will require line of sight
    • At 90 GHz (5G frequencies), the signal would not be able to pass through modern windows (because of the coating on the glass)
    • 5G will solve the latency issues that plagues 4G LTE
    • Link margin is how much above the absolute noise of the system are you
    • Types of modulation
      • OFDM
      • QAM constellations
      • Encoding based on the momentum of the polarization of the signal
      • Common mode modulation creating phantom channels
      • "The Fact That It Works Is Absolute Magic"
      • Bose Einstein Condensate Experiment
      • The dynamic range of peoples' perspectives
      • "If you don't teach people how to sort through information during the information age, then you have no idea how the world is going to turn out"
      • How to initiate a phased array connection
      • Why do you need so many antenna elements in receive mode?
      • Active denial system tested by the military
      • Shahriar bought a SiBEAM (now "Silicon Image") 60 GHz phased array system that creates a wireless HDMI link off of eBay
        • ...more
        View all episodesView all episodes
        Download on the App Store
        The Amp HourBy The Amp Hour (Chris Gammell and David L Jones)
        • 4.9
        • 4.9
        • 4.9
        • 4.9
        • 4.9

        4.9

        226 ratings

        More shows like The Amp Hour

        View all
        The Changelog: Software Development, Open Source by Changelog Media

        The Changelog: Software Development, Open Source

        289 Listeners

        This Week in Tech (Audio) by TWiT

        This Week in Tech (Audio)

        3,061 Listeners

        Security Now (Audio) by TWiT

        Security Now (Audio)

        2,009 Listeners

        Software Engineering Daily by Software Engineering Daily

        Software Engineering Daily

        626 Listeners

        Talk Python To Me by Michael Kennedy

        Talk Python To Me

        583 Listeners

        SpyCast by SpyCast

        SpyCast

        1,534 Listeners

        SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast) by Johannes B. Ullrich

        SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

        648 Listeners

        Embedded by Logical Elegance

        Embedded

        190 Listeners

        Smashing Security by Graham Cluley

        Smashing Security

        317 Listeners

        Darknet Diaries by Jack Rhysider

        Darknet Diaries

        8,051 Listeners

        Physics World Weekly Podcast by Physics World

        Physics World Weekly Podcast

        77 Listeners

        Practical AI by Daniel Whitenack and Chris Benson

        Practical AI

        208 Listeners

        Hackaday Podcast by Hackaday

        Hackaday Podcast

        64 Listeners

        Latent Space: The AI Engineer Podcast by Latent.Space

        Latent Space: The AI Engineer Podcast

        101 Listeners

        Robinson's Podcast by Robinson Erhardt

        Robinson's Podcast

        265 Listeners