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Energy conservation is essential in wireless sensor networks (WSNs) because of limited energy in batteries. Collaborative beamforming uses multiple transmitters to form antenna arrays; the electromagnetic waves from these antenna arrays can create constructive interferences at the receiver and increase the transmission distance. Each transmitter can use(More)
ii This work is dedicated to my parents and my grandma. iii ACKNOWLEDGMENTS I would like to thank my adviser Professor Yung-Hsiang Lu for having taught me how to do research, and for his constant guidance, mentorship and support. Thanks are also due to the members of my advisory committee Professor Jung, Professor Peroulis, and Professor Hu for reviewing my(More)
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