Robust Algorithms for DOA Estimation and Adaptive Beamforming in Wireless Mobile Communications

Robust Algorithms for DOA Estimation and Adaptive Beamforming in Wireless Mobile Communications

R.M. Shubair (Etisalat University College, UAE), K.O. AlMidfa (Etisalat University College, UAE), A. Al-Marri (Etisalat University College, UAE) and M. Al-Nuaimi (Etisalat University College, UAE)
DOI: 10.4018/jbdcn.2006100103
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Abstract

This paper presents a tool for the modelling, analysis and simulation of direction-of-arrival (DOA) estimation and adaptive beamforming needed in the design of smart antenna arrays for wireless mobile communications. The developed tool implements the Minimum Variance Distortionless Response (MVDR) algorithm for DOA estimation and the Least Mean Squares (LMS) algorithm for adaptive beamforming. Performance of each algorithm is investigated with respect to the variation of a number of parameters that related to the signal environment and sensor array. Results of numerical simulation are useful for the design of smart antennas systems with optimal performance. Hence, the developed simulation tool can be used to improve and accelerate the design of wireless networks. It can also be used for computer-aided learning of modern communication systems utilizing smart antenna arrays.

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