TDC4ISAC (Time-to-Digital conversion based integrated sensing and communication) develops asynchronous sampling and signal-generation techniques to reduce the power/size burden of wideband ISAC transceivers. Modern ISAC needs bandwidths above ~1 GHz for high-accuracy sensing, but this pushes conventional ADC/DAC sampling rates (and power) to impractical levels. TDC4ISAC addresses this by shifting key front-end functions into the time domain: (1) TDC-based time-domain ADC (TD-ADC) with event-based sampling and compressed-sensing (CS) reconstruction, and (2) time-domain DAC (TD-DAC) using digital-to-time conversion for energy-efficient waveform generation. The project validates the approach with TRL3 laboratory prototypes and demonstrates an OTFS/OFDM-based ISAC SLAM use-case (navigation + communication). Planned outputs include two conference papers, one Q1–Q2 journal paper, a national patent filing, and open dissemination via a dedicated project webpage and repositories.
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