Authors: H-T. Pai, J-T. Sung
Addresses: Graduate Institute of Communication Engineering, National Taipei University, Taipei, 237, Taiwan. ' Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
Abstract: A fault-tolerant classification system in Wireless Sensor Networks (WSNs) has recently been proposed. An adaptive redetection algorithm and an adaptive retransmission scheme were later developed to reduce the misclassification probability of the system when observations of sensors is highly noisy, and the transmission channel between the sensor and the fusion centre of the network is deeply faded, respectively. The observation and the received data are discarded if they are unreliable. However, they still have useful information. This work applies Equal-Gain Combination (EGC) techniques to utilise the unreliable data. Simulation results show that the new adaptive method with EGC outperforms the original one.
Keywords: EGC; equal-gain combination; WSNs; wireless sensor networks; adaptive distributed detection; fading channels; fault tolerant classification; wireless networks; adaptive redetection; simulation; adaptive retransmission.
International Journal of Ad Hoc and Ubiquitous Computing, 2009 Vol.4 No.2, pp.115 - 121
Published online: 18 Mar 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article