Performance analysis of diversity effect for in-body to on-body wireless UWB link

... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies Pub Date : 2011-10-26 DOI:10.1145/2093698.2093782

Jingjing Shi, D. Anzai, Jianqing Wang

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引用次数: 1

Abstract

The objective of this study is to perform a quantitative performance analysis of diversity effect for in-body to on-body ultra wideband (UWB) transmission for capsule endoscope. UWB technology has a potential to provide real-time image transmission from inside to outside of human body owing to its inherent features. However, it suffers from large attenuation together with shadowing in human tissues. In view of this distinctive property, a diversity scheme is expected to provide an effective improvement on this wireless link performance. Based on finite-difference time-domain (FDTD) numerically-derived in-body to on-body characteristics, we derive probability density function (PDF) for combined communication channels with two different approximation methods and compare their accuracy at first. Then we calculate average bit error rate (BER) with pulse position modulation (PPM) and on-off keying (OOK) modulation scheme to clarify the possible diversity effect.

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体对体无线超宽带链路分集效应的性能分析

本研究的目的是对胶囊内窥镜体对体超宽带(UWB)传输的分集效应进行定量性能分析。超宽带技术由于其固有的特性，有可能提供从人体内部到外部的实时图像传输。然而，它在人体组织中有很大的衰减和阴影。鉴于这种独特的特性，期望分集方案能有效地改善这种无线链路的性能。基于时域有限差分(FDTD)数值导出的体内体外特性，采用两种近似方法推导了组合信道的概率密度函数，并比较了两种近似方法的精度。然后，我们计算了脉冲位置调制(PPM)和开关键控(OOK)调制方案下的平均误码率(BER)，以阐明可能的分集效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies

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