On a common sensor node platform (Telos) we sample RSSI with high frequency during packet reception. We find that a packet collision (RF interference) often manifests as a measurab...
A moving region whose location and extend change over time can imply topological changes such as region split and hole formation. To study this phenomenon is useful in many applic...
Abstract--We propose "mode switch", an adaptive loadsensitive solution that supports both an energy-efficient operation mode for transmitting normal sensor data and an Qo...
Recent advances in space and computer technologies are revolutionizing the way remotely sensed data is collected, managed and interpreted. In particular, NASA is continuously gath...
Frequency overlap across wireless networks with different radio technologies can cause severe interference and reduce communication reliability. The circumstances are particularly...
Chieh-Jan Mike Liang, Bodhi Priyantha, Jie Liu, An...