time synchronization

• Time sync is critical at many layers

  • Beam-forming, localization, distributed DSP
  • Data aggregation & caching
  • TDMA guard bands
  • “Traditional” uses (debugging, user interaction…)

• But time sync needs are non-uniform

  • Maximum Error
  • Lifetime
  • Scope & Availability
  • Efficiency (use of power and time)
  • Cost and form factor

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