Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, ...

Abstract: This paper presents the design and implementation of an Arduino-based ECG heart rate monitoring system. The proposed system uses an ECG sensor module to acquire cardiac signals, which are ...

Abstract: Ultrasonic index modulation can effectively improve the spectral efficiency and energy efficiency of intra-body communication systems. This letter proposes a codeword-based auto-correlation ...

Static calibration: peak output current vs. soil resistance (log-log), showing inverse I ∝ 1/R relationship. Optimized dynamic response at R_soil = 15 kΩ: fast settling (<0.2 ms) with stable 1 kHz ...