Millimeter-wave full duplex radios

Singh, Vaibhav; Mondal, Susnata; Gadre, Akshay; Srivastava, Milind; Paramesh, Jeyanandh; Kumar, Swarun

doi:10.1145/3372224.3380879

Cited by 32 publications

(8 citation statements)

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“…Other schemes for JCRS leverage a full-duplex capability that allows for the simultaneously transmitting and receiving signals [93]. Novel approaches for cancelling the self-interference between transmit and receive antennas are described in [94][95][96][97][98]. The IEEE 802.11ad wireless standard for 60GHz has also been explored for JCRS because of its available 2 GHz bandwidth [91,[99][100][101][102].…”

Section: E Sar Processing Of Communication Waveformsmentioning

confidence: 99%

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Vouras¹,

Mishra²,

Artusio‐Glimpse³

et al. 2022

Preprint

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Rapid developments in synthetic aperture (SA) systems, which generate a larger aperture with greater angular resolution than is inherently possible from the physical dimensions of a single sensor alone, are leading to novel research avenues in several signal processing applications. The SAs may either use a mechanical positioner to move an antenna through space or deploy a distributed network of sensors. With the advent of new hardware technologies, the SAs tend to be denser nowadays. The recent opening of higher frequency bands has led to wide SA bandwidths. In general, new techniques and setups are required to harness the potential of wide SAs in space and bandwidth. Herein, we provide a brief overview of emerging signal processing trends in such spatially and spectrally wideband SA systems. This guide is intended to aid newcomers in navigating the most critical issues in SA analysis and further supports the development of new theories in the field. In particular, we cover the theoretical framework and practical underpinnings of wideband SA radar, channel sounding, sonar, radiometry, and optical applications. Apart from the classical SA applications, we also discuss the quantum electric-field-sensing probes in SAs that are currently undergoing active research but remain at nascent stages of development.

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Section: E Sar Processing Of Communication Waveformsmentioning

confidence: 99%

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

Vouras¹,

Mishra²,

Artusio‐Glimpse³

et al. 2022

Preprint

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“…mmWave Communication. mmWave communication systems have been discussed for their superior bandwidth over Sub-6 GHz counterparts [32,50,65,76]. Due to significant signal strength degradation, mmWave communication often requires smart tracking of receivers for beam steering [16, 18, 20, 41, 54-56, 66, 67].…”

Section: Related Workmentioning

confidence: 99%

OmniScatter

Bae

Ahn

Chae

et al. 2022

Proceedings of the 20th Annual International Conference on Mobile Systems, Applications and Services

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Massive connectivity is a key to the success of the Internet of Things. While mmWave backscatter has great potential, substantial signal attenuation and overwhelming ambient reflections impose significant challenges. We present OmniScatter, a practical mmWave backscatter with an extreme sensitivity of -115 dBm. The performance is theoretically comparable to the popular commodity RFID EPC Gen2 (900 MHz), and is empirically validated via evaluations under various practical settings with abundant ambient reflections and blockages -e.g., In an office where a tag is locked in a wooden closet 6m away, as well in libraries and retail stores where a tag is placed across two rows of metal shelves. At the heart of OmniScatter is the new High Definition FMCW (HD-FMCW), which interplays with the tag (FSK) signal to disentangle the ambient reflections from the tag signal in the frequency domain, essentially offering immunity to ambient reflections. To further support practical deployment, OmniScatter offers coordination-free Frequency Division Multiple Access (FDMA) that effortlessly scales to thousands of concurrent tags. The readers were built on commodity radars and the tags were prototyped on PCB. The trace-driven evaluation demonstrates concurrent communication of 1100 tags with the BER < 1.5%, paving a pathway towards practical mmWave backscatter for everyday and anywhere use.

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“…For instance, in [64], a hybrid beamforming design is presented that guarantees SI is below some power level at each LNA and each ADC at the receiver of the full-duplex mmWave device, ensuring they do not saturate. In addition to using beamforming alone to mitigate SI, researchers have also considered analog and/or digital SIC in conjunction, which relaxes the cancellation requirements of beamforming, allowing it to better serve uplink and downlink at the cost of added hardware or signal processing [47,[65][66][67][68][69][70][71]. The rate region boundaries with spatial cancellation via beamforming (sometimes termed beamforming cancellation) and analog SIC are shown in Fig.…”

Section: Exciting Potential To Tackle Self-interference Via Beamformingmentioning

confidence: 99%

Full-Duplex Transceivers for Next-Generation Wireless Communication Systems

Roberts¹,

Suraweera²

2022

Preprint

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Wireless communication systems can be enhanced at the link level, in medium access, and at the network level when transceivers are equipped with fullduplex capability: the transformative ability to simultaneously transmit and receive over the same frequency spectrum. Effective methods to cancel self-interference are required to facilitate full-duplex operation, which we overview herein in the context of traditional radios, along with those in next-generation wireless networks. We highlight advances in self-interference cancellation that leverage machine learning, and we summarize key considerations and recent progress in full-duplex millimeterwave systems and their application in integrated access and backhaul. We present example design problems and noteworthy findings from recent experimental research to introduce and motivate the advancement of full-duplex millimeter-wave systems. We conclude this chapter by forecasting the future of full-duplex and outlining important research directions that warrant further study.

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Millimeter-wave full duplex radios

Cited by 32 publications

References 50 publications

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures

OmniScatter

Full-Duplex Transceivers for Next-Generation Wireless Communication Systems

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