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In this paper, we present first results of ray-tracing simulations of a realistic office environment across a wide spectrum from 100 GHz (0.1 THz) to 1000 GHz (1.0 THz). This ray-tracing model is used to study the channel characteristics and analyze the variation in received power and the channel delay profile. Furthermore, the frequency dependent atmospheric attenuation has been considered in this...
We consider the wireless geolocation using the time of arrival (ToA) of radio signals in a cellular setting. The main concern in this paper involves the effects of the error knowledge of the path loss exponent (PLE). We derive the asymptotic error performance of the maximum likelihood (ML) estimator under the imperfect PLE. We point out that a previous method provides inaccurate performance prediction...
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