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Wireless Communications and Mobile Computing
Volume 2017 (2017), Article ID 3926821, 12 pages
https://doi.org/10.1155/2017/3926821
Research Article

Pipeline Implementation of Polyphase PSO for Adaptive Beamforming Algorithm

School of Electronic Science and Engineering, National University of Defense Technology, Changsha, China

Correspondence should be addressed to Li Yu; nc.ude.tdun@iluy

Received 14 March 2017; Accepted 13 September 2017; Published 19 December 2017

Academic Editor: Haiyu Huang

Copyright © 2017 Shaobing Huang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Adaptive beamforming is a powerful technique for anti-interference, where searching and tracking optimal solutions are a great challenge. In this paper, a partial Particle Swarm Optimization (PSO) algorithm is proposed to track the optimal solution of an adaptive beamformer due to its great global searching character. Also, due to its naturally parallel searching capabilities, a novel Field Programmable Gate Arrays (FPGA) pipeline architecture using polyphase filter bank structure is designed. In order to perform computations with large dynamic range and high precision, the proposed implementation algorithm uses an efficient user-defined floating-point arithmetic. In addition, a polyphase architecture is proposed to achieve full pipeline implementation. In the case of PSO with large population, the polyphase architecture can significantly save hardware resources while achieving high performance. Finally, the simulation results are presented by cosimulation with ModelSim and SIMULINK.