This paper presents an experimental performance assessment for localization systems using\nreceived signal strength (RSS) measurements from a wireless sensor network. In this experimental\nstudy, we compare two types of model-based localization methods: transceiver-based localization,\nwhich locates objects using RSS from transmitters to receivers at known locations; and transceiver-free\nlocalization, which estimates location by using RSS changes on known-location nodes caused by\nobjects. We evaluate their performance using three sets of experiments with different environmental\nconditions. Our performance analysis shows that transceiver-free localization methods are generally\nmore accurate than transceiver-based localization methods for a wireless sensor network with high\nnode density.
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