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http://dx.doi.org/10.6109/jkiice.2007.11.12.2233

Radio Path Loss and Angle of Arrival Measurements to the Radio Environments at 60GHz  

Song, Ki-Hong (Dong Eui Institute of Technology)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.11, no.12, 2007 , pp. 2233-2240 More about this Journal
Abstract
This paper presents the measured path loss exponents and standard deviations using measured data at 60GHz to analyze the propagation characteristics of millimeter wave bands having great demand for picocellular communications. In addition the angle of arrival(AOA) were measured to analyze the arrival direction of muitipath waves affecting the received signal strength. As results of analysis, the pathloss exponents in each environment are found to be lower than 2 for free space pathloss exponent. They were determined with the qualities of bottom materials affecting signal strength. The angles of arrival by multipath waves were different with the circumference structures between transmitter and receiver. That is, the multipath waves excluding direct and ground reflected wave were difficult to find in wide space such a gymnasium and playground, however the wall multipath waves were found to arrive at receiver in the corridor. The multipath waves at 60GHz can be known to hardly affect to the received signal strength because of weak signals compared with direct wave.
Keywords
밀리미터 파대;경로손실 지수;표준편차;도래각;피코셀;
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