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An Efficient Source Localization Method in Presence of Multipath using Smart Antenna System


Affiliations
1 National Institute of Technology Patna, Patna 800 005, India
2 National Institute of Technology Andhra Pradesh, Tadepalligudem 534 102, India
3 Birla Institute of Technology, Mesra, Deoghar Campus, Deoghar 814 142, India
 

In this paper, a MATLAB based smart antenna testbed that efficiently localizes the line-of-sight (LOS) source in the presence of multipath signals is developed. By exploiting the consistent amplitude nature of the LOS signal, a variant of Constant Modulus Algorithm, namely Multitarget-Least Square Constant Modulus Algorithm is employed to adapt and update the weights of the smart antenna for estimation of the direction-of-arrival (DOA) of the of the LOS and multipath interference signals. Performance is compared with the conventional and recently proposed algorithms in the same testbed with alike considerations. Simulation result shows that the proposed method of DOA estimation performs better in terms of probability of resolution and root mean square error.

Keywords

Array Processing, DOA Estimation, LOS, LS-CMA, Multipath Transmission, Smart Antennas.
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  • An Efficient Source Localization Method in Presence of Multipath using Smart Antenna System

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Authors

Saurav Ganguly
National Institute of Technology Patna, Patna 800 005, India
Jayanta Ghosh
National Institute of Technology Patna, Patna 800 005, India
Puli Kishore Kumar
National Institute of Technology Andhra Pradesh, Tadepalligudem 534 102, India
Mainak Mukhopadhyay
Birla Institute of Technology, Mesra, Deoghar Campus, Deoghar 814 142, India

Abstract


In this paper, a MATLAB based smart antenna testbed that efficiently localizes the line-of-sight (LOS) source in the presence of multipath signals is developed. By exploiting the consistent amplitude nature of the LOS signal, a variant of Constant Modulus Algorithm, namely Multitarget-Least Square Constant Modulus Algorithm is employed to adapt and update the weights of the smart antenna for estimation of the direction-of-arrival (DOA) of the of the LOS and multipath interference signals. Performance is compared with the conventional and recently proposed algorithms in the same testbed with alike considerations. Simulation result shows that the proposed method of DOA estimation performs better in terms of probability of resolution and root mean square error.

Keywords


Array Processing, DOA Estimation, LOS, LS-CMA, Multipath Transmission, Smart Antennas.

References