Improved Noise Modeling with Mutual Coupling in Receiving Antenna Arrays for Direction-of-Arrival Estimation

A new method for modeling correlated noise in receiving antenna arrays for direction-of-arrival (DOA) estimation is introduced. The array noise is divided into a coupled and an uncoupled components which originate from the array environment and the internal circuitry of the antenna elements, respect...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2012-04, Vol.11 (4), p.1616-1621
Main Authors: Niow, C. H., Hui, H. T.
Format: Article
Language:English
Subjects:
Antenna arrays
antenna mutual coupling
Antennas
Applied sciences
Arrays
Computer simulation
Coupled array noise
Covariance matrix
Detection, estimation, filtering, equalization, prediction
Direction of arrival estimation
DOA estimation
Exact sciences and technology
Information, signal and communications theory
MUSIC algorithm
Mutual coupling
Noise
Radiocommunications
Receiving
Receiving antennas
Signal and communications theory
Signal, noise
Telecommunications
Telecommunications and information theory
Wireless communication
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Summary:A new method for modeling correlated noise in receiving antenna arrays for direction-of-arrival (DOA) estimation is introduced. The array noise is divided into a coupled and an uncoupled components which originate from the array environment and the internal circuitry of the antenna elements, respectively. While the uncoupled noise power can be determined a priori and be removed from the array received power, the antenna mutual coupling in the coupled noise component can be decoupled in the same way as the antenna mutual coupling in the signals. This results in a very simple but effective MUSIC DOA estimation algorithm. Simulation results are presented to validate and demonstrate the performance of the new method.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2012.020812.111580