应用于无线胶囊内窥镜的超宽带人体信道特性研究进展

Research progress of human channel characteristics for the ultra-wide band wireless capsule endoscopy

无线胶囊内窥镜(wireless capsule endoscopy,WCE)作为一种用于胃肠道(gastrointestinal tract,GI)无痛、无创检查的植入式器件,已得到广泛应用。为了在WCE中实现更高的图像帧分辨率和传输速率,从而发现病变部位,帮助诊断,建立由体内到体外的高速数据传输信道必不可少。在不增加传输功耗的条件下,基于超宽带频段内进行传输信道路径分析已成为热门趋势。本研究主要基于信道传播特性和实验分析方法两方面介绍了应用于超宽带频段内WCE的人体信道特性研究现状,并对未来超宽带频段人体信道传输特性的研究方向进行分析与展望。

Wireless capsule endoscopy(WCE)as an implantable device implanted in the gastrointestinal tract(GI)with painless and noninvasive examination,has been widely used in the detection of gastrointestinal diseases.In order to achieve higher image frame resolution and transmission rate in WCE,find lesions and help diagnosis,it is essential to establish a high-speed data transmission channel from in vivo to in vitro.Transmission channel paths analysis based on ultra-wide band(UWB)frequency bands without increasing transmission power consumption has become a tendency.We mainly introduce the research status of human channel characteristics applied to WCE in the UWB based on channel propagation characteristics and experimental analysis methods,analyze and prospect the future research direction of the human channel transmission characteristics in the UWB.