DocumentCode :
341647
Title :
The proper statistical nature of measuring and estimating
Author :
Lee, William C Y
Author_Institution :
AirTouch Commun., Walnut Creek, CA, USA
Volume :
1
fYear :
1999
fDate :
36342
Firstpage :
753
Abstract :
In wireless communications, all received signals have a statistical nature. The statistical nature usually comes from a stationary environment. In order to ensure of sufficient signal strength coverage, many methods of estimating or predicting signal strength appear in the technical literature. However, the improper statistical process can sometimes mislead to untrue characteristics in the wireless communications signal. This paper studies the proper means of generating statistical data for assisting with system designs in three steps. First, it examines how to analyze the measured data by going through ergodic processes, i.e., ensuring the ensemble average equals the time average; second, it shows how to handle the measured data in a nonstationary environment; and third, it discusses how to generate a statistical database by using estimations such as ray-tracing techniques in propagation or Rayleigh-fading simulations in data transmission. The boundary of the statistical nature and the caution of using it is addressed as well
Keywords :
Rayleigh channels; digital simulation; measurement; parameter estimation; radiocommunication; radiowave propagation; ray tracing; statistical analysis; Rayleigh-fading simulations; data transmission; ensemble average; ergodic processes; estimation; measured data analysis; nonstationary environment; radiowave propagation; ray-tracing techniques; received signals; signal strength coverage; signal strength estimation; signal strength prediction; stationary environment; statistical database; statistical nature; statistical process; time average; wireless communications signal; Analytical models; Data analysis; Data communication; Databases; Ray tracing; Rayleigh channels; Satellites; Signal processing; Time measurement; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
ISSN :
1090-3038
Print_ISBN :
0-7803-5565-2
Type :
conf
DOI :
10.1109/VETEC.1999.778286
Filename :
778286
Link To Document :
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