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2019-12-21
A Fast Deterministic Algorithm for Side Lobe Level Reduction of Open Loop Coplanar Distributed Antenna Arrays in WSNs
By
Progress In Electromagnetics Research C, Vol. 96, 43-58, 2019
Abstract
Distributed beamforming (DBF) is an efficient technique for reliable communications in wireless sensor networks (WSNs). In DBF based networks, the randomly distributed nodes cooperate together to form a randomly distributed antenna array (RAA) which has a main beam directed towards the intended receiver. Due to the nodes randomness, the DBF results in poor pattern characteristics such as high side lobe level (SLL) and pattern asymmetry around the main beam sides. In this paper, a fast deterministic algorithm for SLL reduction of open loop distributed antenna arrays is introduced. Unlike the existing state of the art optimization techniques for SLL reduction, the proposed algorithm provides a fast deterministic solution for energy transmission or the weight of each node without changing its location. Consequently, the exhaustive search burden of the optimization based techniques for the optimum weights is avoided. The simulation results reveal that the proposed algorithm has superior performance to the optimization techniques in terms of execution time, synthesized SLL, and half power beam width (HPBW).
Citation
Haythem Hussein Abdullah Heba Soliman Dawood Amr Hussein Hussein Abdullah , "A Fast Deterministic Algorithm for Side Lobe Level Reduction of Open Loop Coplanar Distributed Antenna Arrays in WSNs ," Progress In Electromagnetics Research C, Vol. 96, 43-58, 2019.
doi:10.2528/PIERC19072704
http://www.jpier.org/PIERC/pier.php?paper=19072704
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