Prediction of GSM performance using measured propagation data

Joyce, Robert M.; Ibbetson, L.J.; Lopes, L.B.

doi:10.1109/vetec.1996.503462

Cited by 2 publications

(1 citation statement)

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“…In this paper, we present a new method of measuring the signal flight time from a GSM transmitter to a mobile receiver, together with the results of a series of measurements using it at various locations in and around Cambridge, UK. Previous works in this field include studies based on simulated data [6,7], measurements made using channel sounders rather than GSM base stations [8] and developments of correlator-processing techniques [9][10][11]. There are relatively few reports of studies using measurements of the GSM signals themselves.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the effects of multipath interference on timing accuracy in a cellular radio positioning system

Faragher

Duffett-Smith

2010

IET Radar Sonar Navig.

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The authors present a quasi-interferometric technique for measuring the flight times of signals broadcast by global system for mobile communication (GSM) transmitters, together with measurements made using the technique in and around Cambridge, UK. The data are used to determine the errors associated with GSM signal arrival times in various environments. The majority of the timing errors in all signal environments lie in the range 21 to +1.5 ms, with the tails of the distributions extending beyond +3 ms. The authors show that these large timing errors are caused by the distortions of the cross-correlation peaks used to determine the signal arrival times as a result of coherent multipath interference. Models of timing errors, based on Cauchian distributions, fit the experimental data better than those based on symmetrical or skewed Gaussian functions. This has implications for attempts to combine GSM and global navigation satellite system measurements using Kalman filters.

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Section: Introductionmentioning

confidence: 99%