Learning To Communicate
summary
Claims that a Zak-OTFS waveform (a pulse quasi‑periodic in delay‑Doppler, produced by an inverse Zak transform) yields a predictable I/O relation and eliminates "fading" by avoiding delay‑Doppler aliasing. Uses pulsones, Zak transform and twisted convolution, plus simulations comparing Zak versus multicarrier OTFS; shows Zak reads effective channel taps almost as well as perfect channel estimation, that root‑raised‑cosine filters outperform sinc, and that operation succeeds inside the crystalline regime but breaks down when aliasing appears.
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chapters (10)
- 0:00Welcome and logistics
- 2:06Conference updates
- 3:37Context for 6G wireless
- 9:27Pulse in the delay-Doppler
- 15:40Ambiguity and channel dynamics
- 21:05Aliasing and fading
- 24:51Predictability and performance
- 31:23Algebraic perspective
- 34:03Evolution of standards
- 36:54Conclusion and Q&A
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