Model-Based Interference Cartography and Visualization

Karthik, PN and Ramakrishna, Raksha and Joseph, Geethu and Murthy, Chandra R and Sebastian, Joyson and Mehta, Neelesh B (2016) Model-Based Interference Cartography and Visualization. In: 22nd National Conference on Communications (NCC), MAR 04-06, 2016, Guwahati, INDIA.

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Abstract

In this work, we present a tool to construct and visualize the spatio-temporal variations of power. A dataset of real-world power measurements is collected over a geographical area of interest. Relevant parameters of the environment such as the path loss exponent and the decorrelation time of the lognormal shadow fading are extracted from the dataset. Also, the average powers measured at a finite set of known locations are interpolated to obtain the average power distribution over the area. Using the parameters of the lognormal shadow fading, synthetic data with the same temporal behavior of the dataset is generated, and multiplied with the average power distribution. The resulting spatio-temporal power map is displayed on the screen through a graphical user interface developed in-house. The proposed approaches for interpolation and parameter extraction are validated using test datasets generated using the well-accepted modified Gudmundson model for the spatio-temporal correlation of lognormal shadow fading. We also undertake a comparative study of three different interpolation techniques: linear interpolation, inverse distance weighing and ordinary kriging. Further, we compare a model-based approach with a model-free approach for interpolation, and find that model-based ordinary kriging provides the best mean absolute percentage error performance.

Item Type:	Conference Proceedings
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	04 Jan 2017 05:01
Last Modified:	04 Jan 2017 05:01
URI:	http://eprints.iisc.ac.in/id/eprint/55720

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