Rapid Frequency Estimators in Wireless Sensor Networks
Igor Djurović · IEEE Sensors Journal · 2016
Actual topic of estimation of sinusoidals in the wireless sensor network (WSN) setup is analyzed. A class of rapid frequency estimators is considered for this problem. In particular, the Aboutanios-Mulgrew algorithm is modified to meet the requirements of the WSN. Several approaches related to the availability of the central processing unit, estimation in each nodes, collaboration between sensor nodes with the exchange of estimates or signal samples, have been proposed and analyzed. These approaches are tested on cases when all sinusoidals in the WSN are received with the same phase, when phase deviates slightly between sensors, for abrupt loss of communication, and when initial phase of sinusoidal deviates in random manner.