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首页> 外文期刊>IEICE Transactions on Communications >Performance Evaluation on RSSI-Based Localization for Capsule Endoscopy Systems with 400 MHz MICS Band Signals
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Performance Evaluation on RSSI-Based Localization for Capsule Endoscopy Systems with 400 MHz MICS Band Signals

机译:基于RSSI的400 MHz MICS频带信号胶囊内窥镜系统定位的性能评估

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摘要

One of promising application offered by implant body area networks (BANs) is a capsule endoscope localization system. To begin with, this paper performs finite-difference time-domain (FDTD) simulations on implant BAN propagation with a numerical human model, and investigates the propagation characteristics of implant BAN signals at 400 MHz medical implant communication service (MICS) band. Then, the paper presents a capsule endoscope localization system which utilizes only received signal strength indicator (RSSI) and two estimation methods, such as a maximum likelihood (ML) estimation method and a least squares (LS) method. Furthermore, we evaluate the two localization methods by two computer simulation scenarios. Our computer simulation results demonstrate that the ML localization can improve the location estimation accuracy as compared with the LS localization, that is, our performance comparison reveals that a careful consideration the propagation characteristics of implant BANs signals is efficient in terms of estimation performance improvement in capsule endoscope localization.
机译:植入物人体局域网(BAN)提供的有前途的应用之一是胶囊内窥镜定位系统。首先,本文使用数字人体模型对植入物BAN传播进行了有限差分时域(FDTD)仿真,并研究了植入物BAN信号在400 MHz医用植入物通信服务(MICS)频段上的传播特性。然后,本文提出了一种胶囊内窥镜定位系统,该系统仅利用接收信号强度指示器(RSSI)和两种估计方法,例如最大似然(ML)估计方法和最小二乘(LS)方法。此外,我们通过两种计算机模拟方案评估了两种定位方法。我们的计算机仿真结果表明,与LS定位相比,ML定位可以提高位置估计的准确性,也就是说,我们的性能比较表明,仔细考虑植入物BAN信号的传播特性对于改善胶囊的估计性能是有效的内窥镜定位。

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