Power Levels and Second Order Statistics for Indoor Fading Using a Calibrated A-GPS Software Receiver

S. Satyanarayana, D. Borio, G. Lachapelle

Abstract:	Indoor fading characterization is of fundamental importance for designing high-sensitivity algorithms that can effectively cope with the impairments encountered by GPS signals indoors. Thus, the main focus of this paper is the characterization of the indoor propagation channel in terms of signal attenuation and second order statistics such as average fade durations and distances. Specific focus is devoted to the methodology that should be adopted to determine absolute signal power levels and separate temporal and spatial propagation effects. In order to effectively measure GPS power levels down to -160 dBm an A-GPS software receiver using block processing techniques have been developed and used to determine the signal second order statistics. Different methodologies have been considered for the channel characterization. Experimental results, advantages and drawbacks of each methodology are discussed and recommendations for the effective indoor channel characterization are provided.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	402 - 414
Cite this article:	Satyanarayana, S., Borio, D., Lachapelle, G., "Power Levels and Second Order Statistics for Indoor Fading Using a Calibrated A-GPS Software Receiver," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 402-414.
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