Mobile location estimation has received considerable attention over the past few years due to its great potential in providing support to different kinds of location-based services. As the cost of the mobile computing devices decreases, many people own one or more mobile computing devices for different usages. These factors make ubiquitous computing possible and bring it into a new era of computing.
Generally, users location is one of the most important information for ubiquitous computing. It enables location-aware services and therefore makes ubiquitous computing both practical and useful....