My research explores the methods and applications of simultaneous transmission and reception in-band, with a focus on millimeter wave transceivers.

Preprint

Downlink Analysis of LEO Multi-Beam Satellite Communication in Shadowed Rician Channels
by E. Kim, I. P. Roberts, P. A. Iannucci, and J. G. Andrews
Submitted to the 2021 IEEE Global Communications Conference, May 2021
An examination of signal and interference in LEO satellite communication systems under Shadowed Rician channels.
[PDF] [arXiv]

Millimeter Wave Analog Beamforming Codebooks Robust to Self-Interference
by I. P. Roberts, H. B. Jain, S. Vishwanath, and J. G. Andrews
Submitted to the 2021 IEEE Global Communications Conference, May 2021
A design methodology for codebooks that offer high beamforming gain while minimizing self-interference.
[PDF] [arXiv]

Journal and Magazine

Hybrid Beamforming for Millimeter Wave Full-Duplex under Limited Receive Dynamic Range
by I. P. Roberts, J. G. Andrews, and S. Vishwanath
IEEE Transactions on Wireless Communications, June 2021
A beamforming design for mmWave full-duplex that prevents self-interference-induced receiver-side saturation.
[PDF] [IEEE] [arXiv]

Millimeter Wave Full-Duplex Radios: New Challenges and Techniques
by I. P. Roberts, J. G. Andrews, H. B. Jain, and S. Vishwanath
IEEE Wireless Communications Magazine, February 2021
Outlining key system-level challenges, unknowns, and potential solutions for mmWave full-duplex.
[PDF] [IEEE] [arXiv]

Conference

Collision Detection in Dense Wi-Fi Networks using Self-Interference Cancellation
by R. K. Mishra, Y. Chen, I. P. Roberts, and S. Vishwanath
Proceedings of the IEEE International Conference on Communications Workshop on Full-Duplex Communications for Future Wireless Networks, June 2020
A method to improve dense network performance by leveraging self-interference cancellation to detect and avoid collisions.
[PDF] [IEEE]

Equipping Millimeter-Wave Full-Duplex with Analog Self-Interference Cancellation
by I. P. Roberts, H. B. Jain, and S. Vishwanath
Proceedings of the IEEE International Conference on Communications Workshop on Full-Duplex Communications for Future Wireless Networks, June 2020
Examining how analog self-interference cancellation can supplement beamforming cancellation to enable mmWave full-duplex.
[PDF] [IEEE] [arXiv] [YouTube] [slides]

Frequency-Selective Beamforming Cancellation Design for Millimeter-Wave Full-Duplex
by I. P. Roberts, H. B. Jain, and S. Vishwanath
Proceedings of the IEEE International Conference on Communications, June 2020
Extending our beamforming cancellation design for mmWave full-duplex to frequency-selective settings.
[PDF] [IEEE] [arXiv] [YouTube] [slides]

Enabling In-Band Coexistence of Millimeter-Wave Communication and Radar
by H. B. Jain, I. P. Roberts, and S. Vishwanath
Proceedings of the IEEE International Radar Conference, April 2020
A first look at how concepts of mmWave full-duplex can enable in-band coexistence of communication and radar.
[PDF] [IEEE] [arXiv] [YouTube] [slides]

Beamforming Cancellation Design for Millimeter-Wave Full-Duplex
by I. P. Roberts and S. Vishwanath
Proceedings of the IEEE Global Communications Conference, December 2019
Enabling in-band full-duplex at mmWave via strategic MIMO precoding and combining.
[PDF] [IEEE] [arXiv] [slides]

Acknowledgment

Much of my work beginning Fall 2020 is supported by the National Science Foundation Graduate Research Fellowship Program (Grant No. DGE-1610403). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. I appreciate their support of my graduate research and studies.

Disclaimer

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