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In this paper, we propose a stable estimation method of direction of arrival (DOA) using an antenna array with mutual coupling. In a real antenna array, the mutual coupling between elements distorts the array output signal and degrades the performance of DOA estimation. Because the coupling effect is symmetric about each element, the mid-array of which the elements are affected equally is insensitive...
For antijamming design of global positioning system (GPS) in military applications, the direction of arrival (DOA) estimation of jamming signal is positively necessary. The DOA estimation is also used in mobile communication systems to expand the coverage area or to increase the channel capacity, where the base station forms a beam to the direction of the user terminal. In this paper, we compare the...
In this paper, we propose a method to compensate the effects of multiple carrier frequency offsets for orthogonal frequency division multiplexing (OFDM) systems when the received signals come from two spatially separated transmitters. The scheme estimates a proper compensation value with previously estimated carrier frequency offsets caused by the two transmitters. And then compensates the received...
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