Cohere Podcast

  • Our AI podcasts are designed to take extremely complex PHY layer mathematics concepts, and academic materials developed by Cohere and other researchers, into an understandable and readily available conversational format.
    1. What is the Universal Spectrum Multiplier (USM) and how does it fit with 5G?

    Duration: 15:12

    This in-depth podcast gets into the origins of the Universal Spectrum Multiplier, the Delay-Doppler channel model it’s based upon, breakthrough spectral efficiency enabled by bringing MU-MIMO into FDD spectrum and the integration of it into Open RAN and traditional base stations.

    2. How do mobile operators benefit economically from adding USM to existing networks?
    Duration: 20:14

    Under financial pressure? Want to defer major capex while still making investments to expand spectral capacity? If you answered “yes”, this podcast is for you. The podcasters discuss a white paper by Appledore Research that breaks down the positive business and economic impacts of the Universal Spectrum Multiplier.

    3. What is Orthogonal Time Frequency Space (OTFS “primer”)?
    Duration: 10:13

    This short conversational podcast introduces OTFS and its concepts. First developed in 2011 and studied globally by academic researchers in over 1200+ papers since, OTFS has unique properties that solve for some of the gaps that today’s OFDM waveform experiences.

    4. How do OFDM and OTFS stack up to each other?
    Duration: 15:39

    With 6G on the horizon and waveform innovation front and center, let’s discuss one of the candidates, Orthogonal Time Frequency Space (OTFS), and how it stacks up to the legacy Orthogonal Frequency Division Multiplexing (OFDM) used in 4G and 5G systems today.

    5. What is Integrated Sensing and Communications (ISAC) and how does OTFS implement it?
    Duration: 13:44

    In this podcast OTFS is examined for its capabilities to implement both data transmission and sensing in same transmissions. Additionally, applications use cases for ISAC and simulation results will be discussed.

    6. How will “Learning in the Delay-Doppler Domain” transform our handling of the wireless channel?
    Duration: 17:27

    This deep-dive exposes a transformational approach proposed by Dr. Rob Calderbank of Duke University to using OTFS’ Delay-Doppler capabilities to operate “model free” while sending traffic over wireless channels. This adaptive and self-optimizing notion has positive implications to future use of higher frequency and doubly spread channels proposed for 6G spectrum.