“…However, traditional radio frequency (RF) and optical signal transmission in such spaces will sustain complex multipath and occlusion, resulting in a dense multipath effect and significant signal attenuation, leading to a large data transmission error rate [8]- [10]. Consequently, electric field communication, also denoted capacitive coupling communication, was proposed in [11], [12] to realize nonline of sight (NLOS) transmission of various sensors for an invehicle environment, which can also be seen as inside a metal cabinet. The capacitive coupling communication technique is currently widely used in intrabody communication (IBC), such as healthcare [13], entertainment, and in-vehicle scenarios [14], with the advantages of high security and data rate, low energy consumption and carrier frequency [13], [15], [16].…”