References

Haardt, M. and J.A. Nossek, 1995. Unitary ESPRIT: How to obtain increased estimation accuracy with a reduced computational burden. IEEE Trans. Signal Process., 43: 1232-1242.
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Nobuyoshi, K., 1998. Adaptive Signal Processing with Array Antenna. Science and Technology Publishing Co. Inc., Japan.

Nobuyoshi, K., 2003. Adaptive Antenna Technologies. Ohmsha Ltd., Japan.

Strobach, P., 1997. Bi-iteration SVD subspace tracking algorithms and applications. IEEE Trans. Signal Process., 45: 1222-1240.
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Strobach, P., 1998. Fast recursive subspace adaptive ESPRIT algorithm. IEEE Trans. Signal Process., 46: 2413-2430.
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