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Wireless Body Area Channel Measurement and Modeling

Wireless Body Area Channel Measurement and Modeling
Translated Title
무선 인체 영역 채널 측정 및 모델링
Jin, Chan Ho
DGIST Authors
Jin, Chan Ho; Choi, Ji Woong; Kang, Won Seok
Choi, Ji Woong
Kang, Won Seok
Issue Date
Available Date
Degree Date
2015. 2
WBANchannel modelingchannel measurement
Attention about the wireless body area networks (WBAN) system which based on IEEE802.15.6 for implantable medical device or wearable equipment has been increasing. While key devices, such as wearable device, medical device, demonstrate the potential for key technology of future. There are utilized in smart-watch to provide a variety of functions by interlocking smartphones, activity tracker to record user daily workouts or exercise information, u-healthcare to record biometric information such as blood glucose, blood pressure, heart rate, etc. Channel modeling is required in order to design and test the WBAN system. For the wearable devices, the positions of the device is changed according to the human movement. The state of the channel is changed by the position or velocity of the body. For the channel model considering the static situation, it is not appropriate to model the time varying channel according to the changes of human body posture. In addition, channel modeling through a body is quite difficult unlike that in the air since. It can be affected the channel characteristic such as propagation speed, channel gain, absorption depends on the permittivity values of the propagation medium. Therefore, communication channel should be considered the implantable cases. In this paper, our goal is to implement the channel modelling through practical experiment that can reflect time changes due to movement of the body. I analyzed the channel characteristics such as multipath, Doppler effect, Shadowing through practical experiment through time variation according to the human moves. I determined the human body channel according to the changes in the changes of posture or the implants in the human body. ⓒ 2015 DGIST
Table Of Contents
Abstract 1-- List of contents 2-- Ⅰ. INTRODUCTION 3-- Ⅱ. PROPAGATION MODEL AND MEASUREMENT METHOD 6-- 2.1 Electromagnetic characteristics of the human body 6-- 2.2 Multipath channel 7-- 2.3 Parameters for multipath model 9-- 2.4 Doppler channel 11-- 2.5 Parameters for Doppler model 13-- 2.6 Shadowing channel 15-- 2.7 Measurement method 17-- Ⅲ. MEASUREMENT SETUP AND SCENARIO 25-- 3.1 Design Implantable Antenna 25-- 3.2 Measurement setup and scenario for multipath channel 28-- 3.3 Measurement Setup and Scenario for Doppler Channel 31-- 3.4 Measurement Setup and Scenario for Shadowing Channel 32-- Ⅳ. MEASUREMET RESULTS 34-- 4.1 Measurement results for multipath channel 34-- 4.2 Measurement results for Doppler channel 37-- 4.3 Measurement results for Shadowing channel 39-- 4.3 Channel modeling 41-- Ⅴ. CONCLUSIONS 48-- References 49
Information and Communication Engineering
Information and Communication EngineeringThesesMaster

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