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Channel Analysis of Wireless Sensor Networks

  • 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 : Engineering > Computer Science

Kyung Kwon Jung 1 CHOI , WOO SEUNG 2

1동국대학교
2경원대학교

Accredited

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.

Citation status

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