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- Title
A Fast Deterministic Algorithm for Side Lobe Level Reduction of Open Loop Coplanar Distributed Antenna Arrays in WSNs.
- Authors
Abdullah, Haythem H.; Dawood, Heba S.; Hussein, Amr H.
- 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 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 beamwidth (HPBW).
- Subjects
DETERMINISTIC algorithms; ANTENNA arrays; WIRELESS sensor networks; LOOP antennas; MATHEMATICAL optimization; ART techniques
- Publication
Progress in Electromagnetics Research C, 2019, Vol 96, p43
- ISSN
1937-8718
- Publication type
Article
- DOI
10.2528/pierc19072704