What is it about?
SmartShell utilizes a near-field smart reflective surface to enhance the WiFi signal strength at the receiving end of the phone. Results show that the SmartShell can increase the received signal strength (RSS) of the wireless node by 5–10 dB, which is comparable to far-field large-scale reflective surfaces but at a much lower cost.
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Why is it important?
We propose using a small-sized and low-cost reflective surface attached to the mobile device, called SmartShell, to program the micro-environment of radio propagation near the device. We provide a systematic analysis of the near-field reflective surface, laying the theoretical foundation for the feasibility and effectiveness of SmartShell. We then present insight into controlling the surface units of SmartShell, showing that this is fundamentally different from existing far-field designs and can be formulated as a binary quadratic programming (BQP) problem, with performance bounds derived. We develop a prototype of the SmartShell system and conduct comprehensive experiments. Results show that the SmartShell can increase the received signal strength (RSS) of the wireless node by 5–10 dB, which is comparable to far-field large-scale reflective surfaces but at a much lower cost.
Perspectives
I hope this article has inspired researchers in the design of near-field smart reflective surfaces.
Linling Zhong
Shanghai Jiao Tong University
Read the Original
This page is a summary of: SmartShell: A Near-Field Reflective Surface Enhancing RSS, June 2023, ACM (Association for Computing Machinery),
DOI: 10.1145/3581791.3596866.
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