Search results for "Frequency band"

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Effects of Temperature and Humidity on Radio Signal Strength in Outdoor Wireless Sensor Networks

2015

Many wireless sensor networks operating outdoors are exposed to changing weather conditions, which may cause severe degradation in system performance. Therefore, it is essential to explore the factors affecting radio link quality in order to mitigate their impact and to adapt to varying conditions. In this paper, we study the effects of temperature and humidity on radio signal strength in outdoor wireless sensor networks. Experimental measurements were performed using Atmel ZigBit 2.4GHz wireless modules, both in summer and wintertime. We employed all the radio channels specified by IEEE 802.15.4 for 2.4GHz ISM frequency band with two transmit power levels. The results show that changes in …

ta113ta213radio signal strengthComputer scienceFrequency bandbusiness.industryRadio Link ProtocolhumiditytemperatureTransmitter power outputTemperature measurementlaw.inventionlawMobile wireless sensor networkElectronic engineeringWirelesslämpötilaTelecommunicationsbusinesswireless sensor networksWireless sensor networkDiversity scheme

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PEPhysical Sciences and Engineering
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LSLife Sciences
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SHSocial Sciences and Humanities
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