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A Setup for the Evaluation of MUSIC and LMS Algorithms for a Smart Antenna System

Raed M. Shubair, Mahmoud A. Al-Qutayri, and Jassim M. Samhan
Etisalat University College P.O.Box 573, Sharjah, UAE
Abstract—This paper presents practical design of a smartantenna system based on direction-of-arrival estimation andadaptive beamforming. Direction-of-arrival (DOA) estimation isbased on the MUSIC algorithm for identifying the directionsof the source signals incident on the sensor array comprisingthe smart antenna system. Adaptive beamforming is achievedusing the LMS algorithm for directing the main beam towardsthe desired source signals and generating deep nulls in thedirections of interfering signals. The smart antenna systemdesigned involves a hardware part which provides real datameasurements of the incident signals received by the sensor array.Results obtained verify the improved performance of the smartantenna system when the practical measurements of the signalenvironment surrounding the sensor array are used. This takesthe form of sharper peaks in the MUSIC angular spectrum anddeep nulls in the LMS array beampattern.

Index Terms—Smart antennas, DOA estimation, adaptive beamforming,least mean squares.

Cite: Raed M. Shubair, Mahmoud A. Al-Qutayri, and Jassim M. Samhan, "A Setup for the Evaluation of MUSIC and LMS Algorithms for a Smart Antenna System," Journal of Communications, vol. 2, no. 4, pp. 71-77, 2007.
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