IEEE Transactions on Vehicular Technology, VOL. 45, No. 1, pp. 105-113, February 1996.
Abstract - A channel phase measurement system based on stable quartz oscillators at the transmitter and at an I and Q receiver is presented. Observations of the phase behaviour over a 910-MHz mobile radio channel in urban and semi-urban areas are made and related to the signals physical parameters. A method to characterize channel phase variations is proposed that corresponds to taking the second difference on the phase. Standard deviations of this phase variation measure are found to increase more or less linearly with distance in built-up areas, with a slope as high as 10° per km. Comparisons between measured and theoretical statistical distributions of the phase variations are made: while not meeting the ki-square test criteria, quadratic error tests supported by visual observation show that a Student's t distribution with two degrees of freedom, of the type used to describe the statistical characteristics of random FN, offers for practical purposes a useful statistical description of the measured phase variations.
Abstract - A channel phase measurement system based on stable quartz oscillators at the transmitter and at an I and Q receiver is presented. Observations of the phase behaviour over a 910-MHz mobile radio channel in urban and semi-urban areas are made and related to the signals physical parameters. A method to characterize channel phase variations is proposed that corresponds to taking the second difference on the phase. Standard deviations of this phase variation measure are found to increase more or less linearly with distance in built-up areas, with a slope as high as 10° per km. Comparisons between measured and theoretical statistical distributions of the phase variations are made: while not meeting the ki-square test criteria, quadratic error tests supported by visual observation show that a Student's t distribution with two degrees of freedom, of the type used to describe the statistical characteristics of random FN, offers for practical purposes a useful statistical description of the measured phase variations.
Fig. 1 - I and Q receiving system for phase measurements.
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Abstract (IEEE Explore) DOI:10.1109/25.31125
Citing Documents:
M, Lecours, M. Têtu, A. Chefaoui, J. Ahern, A. Michaud, A. "Phase measurements and characterization of mobile radio channels" , IEEE Transactions on Vehicular Technology, Vol. 45, No. 1, pp 105-113, Feb 1996. [on line] [on line]
J.B. Andersen, P.C.F. Eggers, R. G. Vaughan, "Comments on: Phase measurements and characterization of mobile radio channels" , IEEE Transactions on Vehicular Technology, Vol. 46, No. 3, p 799, Aug 1997. [on line]
Y.P. Zhang, "Indoor radiated-mode leaky feeder propagation at 2.0 GHz", IEEE Transactions on Vehicular Technology, Vol. 50, No. 2, pp 536-545, Mar 2001. [on line]
J.T. Ong, H. Yan, S.V.B. Rao, G. Shanmugam, "Indoor DTV reception: measurement techniques", IEEE Transactions on Broadcasting, Vol. 50, No. 2, pp. 192- 199, June 2004. [on line]
Keywords:
mobile radio systems, radio reception, radiowave propagation, statistical analysis, telecommunication channels, 900 MHz, Rice probability law, UHF, direct-component-to-multipath-component ratio, fading distance, level crossing rates, low-pass filter, medium-density, urban area, mobile radio channel, propagation loss measurement, rapid variation components, received signal envelope, slow variation component, statistical analysis, statistical modelling.
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Links:
Abstract (IEEE Explore) DOI:10.1109/25.31125
Citing Documents:
M, Lecours, M. Têtu, A. Chefaoui, J. Ahern, A. Michaud, A. "Phase measurements and characterization of mobile radio channels" , IEEE Transactions on Vehicular Technology, Vol. 45, No. 1, pp 105-113, Feb 1996. [on line] [on line]
J.B. Andersen, P.C.F. Eggers, R. G. Vaughan, "Comments on: Phase measurements and characterization of mobile radio channels" , IEEE Transactions on Vehicular Technology, Vol. 46, No. 3, p 799, Aug 1997. [on line]
Y.P. Zhang, "Indoor radiated-mode leaky feeder propagation at 2.0 GHz", IEEE Transactions on Vehicular Technology, Vol. 50, No. 2, pp 536-545, Mar 2001. [on line]
J.T. Ong, H. Yan, S.V.B. Rao, G. Shanmugam, "Indoor DTV reception: measurement techniques", IEEE Transactions on Broadcasting, Vol. 50, No. 2, pp. 192- 199, June 2004. [on line]
Keywords:
mobile radio systems, radio reception, radiowave propagation, statistical analysis, telecommunication channels, 900 MHz, Rice probability law, UHF, direct-component-to-multipath-component ratio, fading distance, level crossing rates, low-pass filter, medium-density, urban area, mobile radio channel, propagation loss measurement, rapid variation components, received signal envelope, slow variation component, statistical analysis, statistical modelling.
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