Channel Analysis of Wireless Sensor Networks

Kyung Kwon Jung; CHOI , WOO SEUNG

Journal of The Korea Society of Computer and Information

Abbr : JKSCI
2008, 13(5), pp.179-186
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science

Kyung Kwon Jung ¹ , CHOI , WOO SEUNG ²

¹ 동국대학교
² 경원대학교

ABSTRACT

In proportion as the growth of the wireless sensor network applications, we need for more accuracy wireless channel information. In the case of indoor or outdoor wireless sensor networks, multipath propagation causes severe problems in terms of fading. Therefore, a path-loss model for multipath environment is required to optimize communication systems. This paper deals with log-normal path loss modeling of the indoor 2.4 GHz channel. We measured variation of the received signal strength between the sender and receiver of which separation was increased from 1 to 30 m. The path-loss exponent and the standard deviation of wireless channel were determined by fitting of the measured data. By using the PRR(Packet Reception Rate) of this model, Wireless sensor channel is defined CR (Connect Region), DR(Disconnected Region). In order to verify the characteristics of wireless channel, we performed simulations and experiments. We demonstrated that connection ranges are 24 m in indoor, and 14 m in outdoor.
KEYWORDS

무선 센서 네트워크(Wireless Sensor Networks) , 채널 모델링(channel modeling) , Log-normal path loss model , 연결 영역(Connect Region) , 차단 영역(Disconnected Region)
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KCI Citation (2)

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