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Updated: Jan 23, 2026

Implantation of Electrospun Vascular Grafts with Optimized Structure in a Rat Model

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インプラント通信のためのMIMO-UWB分散ビームフォーミングの重量最適化

Takumi Kobayashi¹, Jaakko Hyry¹, Manato Fujimoto¹

¹Graduate School of Informatics, Osaka Metropolitan University, Sakai, 599-8531, Japan.

Scientific reports

|January 21, 2026

Abstract:

This paper discussed a frequency-dependent distributed beamforming technique to improve the reliability in implant multiple-input multiple-output (MIMO)-ultra wideband (UWB) communications. To realize distributed beamforming for implant MIMO-UWB systems, we propose an optimization method to theoretically determine the weight coefficients optimized for the implant UWB communication. To evaluate the performance improvement, the propagation characteristics of the implant channel in the low band UWB (3.4-4.8 GHz) were analyzed by the finite difference time domain (FDTD) method with a numerical human model. Subsequently, this study conducted computer simulations based on the derived propagation channel model. The evaluation results demonstrate that the proposed beamforming effectively improved the [Formula: see text] performance by 5 dB in a capsule endoscopy scenario, compared to the conventional method, which can improve implantable medical devices in the future.

キーワード:

インプラント通信 MIMO-UWB 分散ビームフォーミング重量最適化ワイヤレスカプセル内視鏡

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