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Design and simulation of a flexible beamforming interface for MIMO receivers using a Butler labyrinth
Author(s) -
Crişan Nicolae,
Cremene Ligia C.
Publication year - 2011
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20518
Subject(s) - beamforming , component (thermodynamics) , mimo , electronic engineering , computer science , antenna (radio) , process (computing) , interface (matter) , digital signal processing , wireless , engineering , telecommunications , physics , bubble , maximum bubble pressure method , parallel computing , thermodynamics , operating system
This article focuses on the design and simulation of a new component for analog beamforming based on the Butler labyrinth. The proposed component enables the analysis of four‐antenna beamforming in systems with two receive channels. The problem was to design a component that would enable simulation of a MIMO receiver with an accurate account of the analog beam‐former effects on the digital signal processing level. The entire process is described—from layout design to the final DSP level integration and simulation. The performance of the simulated Butler component is compared to that of an ideal, theoretical one. The differences in the results indicate the importance of taking into account the effects of the layout level design on the DSP simulation level. The new component proves valuable for the bottom‐up approach in the design and simulation of a wireless system. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2011.