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Estimation of Direction of Arrival (DOA) Using Real- Time Array Signal Processing and Performance Analysis


Shahedul Amin, Riyasat Azim, Syed Prantik Rahman, Ferdous Habib, Ashraful Hoque


Vol. 10  No. 7  pp. 43-57


Array signal processing (ASP) is a relatively new technique in Digital Signal Processing (DSP) with many potential applications in communication and speech processing. Direction of arrival (DOA) can be estimated using different techniques evolved from ASP. Spectral-based algorithm and subspace-based methods are implemented using two widely used softwares, MATLAB and NI LabVIEW, to demonstrate the feasibility of introducing the topics in course curriculum of graduate or undergraduate program. It is observed that subspace method provides superior performance in resolving closely spaced sources. The blocks developed using LabVIEW can be used for processing signals obtained from data acquisition card in real time. Smart antenna and associated technologies are expected to play a significant role in enabling broadband wireless communication system. Smart antennas exploit space diversity to help provide high data rates, increased channel capacity and improved quality of service at an affordable cost. In this paper we presented a new procedure for implementing smart antenna algorithms.


Aliasing, Array Signal Processing, Beamforming, Direction of Arrival, Bit Error Rate