A Comparison of AI-Enabled Digital Twins for DSP-based Self-Interference Cancellation in Wideband Full-Duplex Communications

Silva, Udara De; Madanayake, Arjuna; Pulipati, Sravan; Belostotski, Leo; Kulatunga, Thisara; Zhao, Haixiang; Mandal, Soumyajit

doi:10.1109/apwc52648.2021.9539817

Cited by 2 publications

(3 citation statements)

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“…Massive MIMO is the dominant technology for scalable 6G wireless systems. We propose a MIMO-capable STAR front-end that cancels self-interference between every transmit antenna and every receive antenna in arrays [3,4].…”

Section: System Overviewmentioning

confidence: 99%

“…The proposed method is both simple and effective in solving the extremely challenging full-duplex MIMO STAR self-interference issue. In fact, use of the array pair {ACOM, ACH} solves the SIC challenges for MIMO when circulators are not used [3,4].…”

Section: System Overviewmentioning

confidence: 99%

“…Following our early work in the sub-6 GHz band [3,4], we extend the array-pair cancellation-based front-end to the FR3 band. Notable, going from a 2.4 GHz system to a 12.5 GHz implies a 5x increase in RF frequency.…”

Section: Electromagnetics Of the Radio Interfacementioning

confidence: 99%

See 2 more Smart Citations

Wideband Full-Duplex MIMO: A 5*5 Example Across 12.5-13.0 GHz with Baseband 100 MHz

Zhao,

De Silva,

Bojja Venkatakrishnan

et al. 2023

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023

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Full-duplex wideband wireless radios with MIMO is a challenging open problem in communications. The adoption of a pair of arrays for physical symmetry-based passive cancellation of self-interference between antenna elements is demonstrated in the FR3 band. Up to 12 dB of additional self-interference cancellation (SIC) is observed. Further, machine learning-based DSP is used to mimic the nonidealities of each power amplifier in the MIMO system, thereby allowing additional 22 dB of digital SIC. A linear FIR MIMO filterbank is envisaged for cancelling environmental reflections across the MIMO interface. Work on both MIMO-RF and DSP-based cancellation is reported in the FR3 range of 12.5-13.0 GHz band with a DSP bandwidth of 100 MHz on Xilinx RF-SoC ZCU-111.

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Section: System Overviewmentioning

confidence: 99%

Section: System Overviewmentioning

confidence: 99%