Fundamental Limits of Wideband Localization - Part II: Cooperative Networks - Computer Science > Information TheoryReport as inadecuate




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Abstract: The availability of positional information is of great importance in manycommercial, governmental, and military applications. Localization is commonlyaccomplished through the use of radio communication between mobile devicesagents and fixed infrastructure anchors. However, precise determination ofagent positions is a challenging task, especially in harsh environments due toradio blockage or limited anchor deployment. In these situations, cooperationamong agents can significantly improve localization accuracy and reducelocalization outage probabilities. A general framework of analyzing thefundamental limits of wideband localization has been developed in Part I of thepaper. Here, we build on this framework and establish the fundamental limits ofwideband cooperative location-aware networks. Our analysis is based on thewaveforms received at the nodes, in conjunction with Fisher informationinequality. We provide a geometrical interpretation of equivalent Fisherinformation for cooperative networks. This approach allows us to succinctlyderive fundamental performance limits and their scaling behaviors, and to treatanchors and agents in a unified way from the perspective of localizationaccuracy. Our results yield important insights into how and when cooperation isbeneficial.



Author: Yuan Shen, Henk Wymeersch, Moe Z. Win

Source: https://arxiv.org/







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