[IEEE 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC 2012) - Sydney, Australia (2012.09.9-2012.09.12)] 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC) - Improvement of localization results in wireless networks using estimation of distances between unknown nodes: Simulation and real testbed evaluation