Comparison of wireless clock synchronization algorithms for indoor location systems

The advent of time based location systems paves the way to the introduction of many exciting applications. However, they can only function correctly if the system has a common concept of time. Often it is not practical to synchronize all receivers using wires so alternative methods must be found. This paper outlines the use of a DW1000 ScenSor, an IEEE 802.15.4a transceiver, as a test platform. It then describes and compares several methods of wirelessly synchronizing all the sensors in the location system.