الفهرس 
Chapter One: OVERVIEWOnly 14 pages are availabe for public view
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Abstract
Wireless Sensor Network (WSN) with a large number of sensor nodes
are used as an effective tool for gathering data in various situations. One of the
major issues in WSN is developing an energy efficient fusion algorithm which
has a significant impact on the overall lifetime of the sensor network.
Deployment strategy is first considered in this thesis by comparing
random and fixed deployment strategies. One hundred sensors have been
deployed in a normalized square area and four cases for event detection are
studied. Two parameters are calculated; number of selected sensors, which
reflect energy consumption, and sensing capability.
A Mobility Efficient Data Fusion (MEDF) algorithm is proposed, in
which data compression protocol is integrated with an adaptive clustering
protocol. The performance of the proposed MEDF protocol is compared with
the Energy Efficient Multiple Data Fusion (EEMDF) protocol. The performance
is evaluated mainly, according to four metrics, packet delivery ratio, network
life time, average energy consumed, and average delay.
Decision fusion of binary decisions transmitted over noisy and fading
channels in WSNs is studied. Hamming, LDPC, and Viterbi coding techniques
have been used with interleaving for processing received decisions at local
sensors. Performance enhancement has been obtained by using coding and
interleaving. Maximal Ratio Combining (MRC) and Equal Gain Combining
(EGC) fusion rules have been used in wavelet domain at the fusion center
showing a great success in the fusion results.