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A True Full-Duplex IO (TFD-IO) with Background SI Cancellation for High-Density Interfaces

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posted on 28.05.2021, 11:38 by Sandeep GoyalSandeep Goyal, Ganpat Anant Parulekar, Shalabh Gupta
In this work, we have proposed and experimentally demonstrated a true full-duplex IO (TFD-IO) for high-speed high-density interfaces. The proposed TFD-IO can be used as an independent module that converts a unidirectional IO/interconnect to a fully bidirectional IO/interconnect, to ideally double the throughput of the high-speed interface.
The TFD-IO uses a correlation-based technique to cancel the self-interference (SI) adaptively in the background. The signals transmitted from the near-end and the far-end can use independent baud-rates and signaling schemes in a TFD-IO. A proof-of-concept design of the TFD-IO module has been fabricated in a 65 nm CMOS technology, and demonstrated with bidirectional throughputs of up to 12.8\,Gb/s.

History

Email Address of Submitting Author

sandeepgoyal@ee.iitb.ac.in

ORCID of Submitting Author

sandeepgoyal@ee.iitb.ac.in

Submitting Author's Institution

Indian Institute of Technology Bombay, Mumbai

Submitting Author's Country

India