Journal of Communications · 2007 · 56 citations · 20 references
EngineeringElectrical EngineeringAntennasMusic TheoryWireless CommunicationsAntenna ArraysAntenna MeasurementArray ProcessingBeam SteeringBeamformingSmart AntennasAdaptive BeamformingAntenna BeamformingBeamforming AlgorithmsBeamforming TechniquesDirection-of-arrival EstimationMusic AlgorithmSmart Antenna DesignSmart Antenna Systems
The paper designs a practical smart antenna system using DOA estimation and adaptive beamforming. The system employs MUSIC for direction‑of‑arrival estimation, LMS for adaptive beamforming, and incorporates hardware that supplies real‑time signal measurements to the sensor array. Experimental results show that using real‑time measurements sharpens MUSIC peaks and deepens LMS nulls, confirming enhanced antenna performance.
This paper presents practical design of a smart antenna system based on direction-of-arrival estimation and adaptive beamforming. Direction-of-arrival (DOA) estimation is based on the MUSIC algorithm for identifying the directions of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beamforming is achieved using the LMS algorithm for directing the main beam towards the desired source signals and generating deep nulls in the directions of interfering signals. The smart antenna system designed involves a hardware part which provides real data measurements of the incident signals received by the sensor array. Results obtained verify the improved performance of the smart antenna system when the practical measurements of the signal environment surrounding the sensor array are used. This takes the form of sharper peaks in the MUSIC angular spectrum and deep nulls in the LMS array beampattern.
20