Recent advances in both optical wireless communication systems and implantable medical devices have paved the way for the establishment of high-speed transdermal optical wireless (TOW) communication links for telemetry with medical implants. However, the performance of such wireless links is primary degraded by skin-induced attenuation effect along with spatial jitter. In order to deal with these limitations, in this work, we propose, for the first time in the TOW communication field, the subcarrier intensity modulation technique. On top of that, the stochastic nature of pointing errors which little has been reported in the open TOW technical literature, is considered. Under these circumstances, an average symbol error propability (ASEP) analysis for typical subcarrier L-PSK or DBPSK TOW link configurations with time diversity technique is performed. In this context, novel analytical ASEP expressions are derived, while appropriate analytical results are depicted and validated by Monte Carlo simulations over a wide signal-to-noise ratio range.

中文翻译：

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具有时间分集、皮肤衰减和空间抖动的经皮副载波 L-PSK 或 DBPSK 光学无线链路

光无线通信系统和植入式医疗设备的最新进展为建立高速透皮光无线 (TOW) 通信链路与医疗植入物进行遥测铺平了道路。然而，这种无线链路的性能主要因皮肤引起的衰减效应和空间抖动而降低。为了解决这些限制，在这项工作中，我们首次在 TOW 通信领域提出了副载波强度调制技术。最重要的是，考虑了在公开的 TOW 技术文献中很少报道的指向错误的随机性。在这些情况下，使用时间分集技术对典型副载波 L-PSK 或 DBPSK TOW 链路配置执行平均符号错误概率 (ASEP) 分析。在这种情况下，推导出了新的分析 ASEP 表达式，同时通过蒙特卡罗模拟在宽信噪比范围内描述和验证了适当的分析结果。