Implementation of FPGA Based Fast Unitary MUSIC DOA Estimator

Minseok KIM  Koichi ICHIGE  Hiroyuki ARAI  

IEICE TRANSACTIONS on Electronics   Vol.E87-C    No.9    pp.1485-1494
Publication Date: 2004/09/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Wave Technologies for Wireless and Optical Communications)
Category: Wireless Network System Performances
adaptive antenna,  smart antenna,  FPGA implementation,  DOA estimation,  MUSIC,  EVD,  

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DOA (Direction Of Arrival) estimation is a useful technique in various positioning applications including the DOA-based adaptive array antenna system. This paper presents a practical implementation of FPGA (Field Programmable Gate Array) based fast DOA estimator for wireless cellular basestation. This system incorporates spectral unitary MUSIC (MUltiple SIgnal Classification) algorithm, which is one of the representative super resolution DOA estimation techniques. This paper proposes a way of digital signal processor design suitable for FPGA and its real hardware implementation. In this system, all digital signal processing procedures are computed by the only fixed-point operation with finite word-length for fast processing and low power consumption. The performance will be assessed by hardware level simulations and experiments in a radio anechoic chamber.