The Estimation of DOA in Smart Antenna Systems
Adil Majdoubi1, Mohamed Essaaidi2

1Adil Majdoubi, Département of physics, Abdelmalek Essaadi university, Tetuan, Morocco.
2Mohamed Essaaidi, Département of physics. Abdelmalek Essaadi university, Tetuan, Morocco.

Manuscript received on 15 November 2012 | Revised Manuscript received on 25 November 2012 | Manuscript Published on 30 November 2012 | PP: 132-134 | Volume-1 Issue-6, November 2012 | Retrieval Number: E0326101612/2012©BEIESP
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Abstract: Smart antennas systems are being the key solution to increase the spectral efficiency and improving the system performance in mobile communication. Smart antennas usually consist of a number of radiating elements (i.e. array antennas) whose individual excitation can be controlled by DSP (digital signal processor) in order to achieve the desired radiation pattern. The smart antennas systems estimate the direction of arrival of the signal, using techniques such as MUSIC (Multiple Signal Classification), and ESPRIT (estimation of signal parameters via rotational invariance techniques) algorithms. They involve finding a spatial spectrum of the antenna array and calculating the DOA from the peaks of this spectrum. These calculations are computationally intensive.
Keywords: DOA, MUSIC, antenna array, spatial spectrum, beamforming
Scope of the Article: Smart Antenna