Opportunistic Symbiotic Backscatter Communication Systems

Yang, Hancheng; Ding, Haiyang; Elkashlan, Maged

doi:10.1109/lcomm.2022.3202362

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Another RIS application is information modulation by periodically switching its reflection pattern within the channel coherence time. This creates a free-ride message stream with dual benefits: integrating with legacy transmitter for enhanced channel capacity [11]- [13], or serving as individual source for low-power uplink communication [14]- [16]. Different from above, channel shaping exploits RIS as a stand-alone device to modify the inherent properties of the wireless environment, for example, compensate for the Doppler effect [17], flatten frequency-selective channels [18], improve MIMO channel rank [19], and artificially diversify channel over time for orthogonal [20] and non-orthogonal [21] multiple access schemes.…”

Section: A Backgroundmentioning

confidence: 99%

On-demand field shaping for enhanced magnetic resonance imaging using an ultrathin reconfigurable metasurface

Zhao¹

2021

Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX

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This paper investigates the capability of a passive Reconfigurable Intelligent Surface (RIS) to redistribute the singular values of point-to-point Multiple-Input Multiple-Output (MIMO) channels for achieving power and rate gains. We depart from the conventional Diagonal (D)-RIS with diagonal phase shift matrix and adopt a Beyond Diagonal (BD) architecture that offers greater wave manipulation flexibility through element-wise connections. Specifically, we first provide shaping insights by characterizing the channel singular value regions attainable by D-RIS and BD-RIS via a novel geodesic optimization. Analytical singular value bounds are then derived to explore their shaping limits in typical deployment scenarios. As a side product, we tackle BD-RIS-aided MIMO rate maximization problem by a localoptimal Alternating Optimization (AO) and a shaping-inspired low-complexity approach. Results show that compared to D-RIS, BD-RIS significantly improves the dynamic range of all channel singular values, the trade-off in manipulating them, and thus the channel power and achievable rate. Those observations become more pronounced when the number of RIS elements and MIMO dimensions increase. Of particular interest, BD-RIS is shown to activate multi-stream transmission at lower transmit power than D-RIS, hence achieving the asymptotic Degrees of Freedom (DoF) at low Signal-to-Noise Ratio (SNR) thanks to its higher flexibility of shaping the distribution of channel singular values.

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Section: A Backgroundmentioning

confidence: 99%

On-demand field shaping for enhanced magnetic resonance imaging using an ultrathin reconfigurable metasurface

Zhao¹

2021

Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX

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Linear Transceiver Design for Multi-Tag Symbiotic Radio Systems With Max-Min Fairness

Fang,

Zhou,

et al. 2023

IEEE Commun. Lett.

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Analysis of symbiotic backscatter empowered wireless sensors network with short-packet communications

Do,

Minh,

Nguyen

et al. 2024

PLoS ONE

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Recent progress studies in light of wireless communication systems mainly centred around two focuses: zero-energy consumption and ultra-reliable and low-latency communication (URLLC). Among various cutting-edge areas, exploiting ambient backscatter communication (Backcom) has recently been devised as one of the foremost solutions for achieving zero energy consumption through the viability of ambient radio frequency. Meanwhile, using short-packet communication (SPC) is the cheapest way to reach the goal of URLLCs. Upon these benefits, we investigate the feasibility of Backcom and SPC for symbiotic wireless sensor networks by analyzing the system performance. Specifically, we provide a highly approximated mathematical framework for evaluating the block-error rate (BLER) performance, followed by some useful asymptotic results. These results provide insights into the level of diversity and coding gain, as well as how packet design impacts BLER performance. Numerical results confirm the efficacy of the developed framework and the correctness of key insights gleaned from the asymptotic analyses.

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Opportunistic Symbiotic Backscatter Communication Systems

Cited by 3 publications

References 11 publications

On-demand field shaping for enhanced magnetic resonance imaging using an ultrathin reconfigurable metasurface

On-demand field shaping for enhanced magnetic resonance imaging using an ultrathin reconfigurable metasurface

Linear Transceiver Design for Multi-Tag Symbiotic Radio Systems With Max-Min Fairness

Analysis of symbiotic backscatter empowered wireless sensors network with short-packet communications

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