Title: Evaluation of cellular prediction models using 900 MHz outdoor measurements and tuning of Lee model over Indian urban and suburban regions
Authors: M.V.S.N. Prasad; K. Ratnamala; P.K. Dalela; Chandra Shekhar Misra
Addresses: National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, India ' National Geophysical Research Institute, Uppal Road, Hyderabad 500606, Andhra Pradesh, India ' Centre for Development of Telematics (C-DOT), Chattarpur, Mehrauli, New Delhi, India ' AIRCOM International Pvt Ltd., M.G. Road, Gurgaon 122001, Haryana, India
Abstract: The present study reports the field strength measurements of some GSM transmitters in the 900 MHz band located in the urban and suburban regions of Delhi in India. The measured signal levels converted into path loss values have been compared with the losses predicted from models such as Hata, Lee and COST 231 Walfisch and Ikegami. The prediction errors and standard deviations of the prediction errors have been deduced. Based on these results, Lee prediction method has been tuned and new model parameters have been derived. The model comparison is done in terms of statistical parameters such as root mean square error, coefficient of determination and average hit rate error.
Keywords: 900 MHz measurements; path loss modelling; Lee model tuning; cellular prediction models; outdoor measurements; India; urban areas; suburban areas; field strength measurements; GSM transmitters.
International Journal of Wireless and Mobile Computing, 2011 Vol.5 No.1, pp.77 - 87
Received: 26 Mar 2011
Accepted: 05 Oct 2011
Published online: 09 Dec 2011 *