Experimental studying of influence of weight coefficients jitter on output signal of adaptive antenna array
DOI:
https://doi.org/10.1109/ICATT.1999.1236193Abstract
It is well known that weight coefficients jitter in adaptive arrays does not allow to obtain a theoretical limit of the quality criterion [1, 2].
Statistical analysis of weight vector jitter in the adaptive array with gradient algorithms for the input signals with correlated samples was carried out in papers [7–10]. There it has been shown that an influence of weight coefficients fluctuations depends on value of coefficient of correlation between samples of input signals and can cause either increasing or decreasing ("overcompensation") effect of the output signal power comparing with the case when signal is processed with an optimal, constant weight vector.
In this paper there are presented computer simulation results that are aimed to checking these theoretical conclusions of the article [10].
References
Brennan, L.E.; Pugh, E.L.; Reed, I.S. Control-loop noise in adaptive array antennas. IEEE Trans., 1971, Vol. AES-7, No. 2, p. 254-262.
Widrow, B.; McCool, J.M. A comparison of adaptive algorithms based on the methods of steepest descent and random search. IEEE Trans., 1976, Vol. AP-24, p. 615-637.
Hudson, J.E. Adaptive Array Principles. London: IEE, 1991.
Widrow, B.; et al. Stationary and non stationary learning characteristics of the LMS adaptive filter. Proc. IEEE, 1976, Vol. 64, No. 8, p. 1151-1162.
Widrow, B.; Stearns, S. Adaptive Signal Processing. Englewood Cliffs, N. J.: Prentice-Hall, 1985.
Fedinin, V.V. Statistical analysis of multichannel adaptive system with correlation loops. Radiotekhnika i Elektronika, 1982, Vol. 27, No. 8, p. 1548-1553.
Mal'tsev, A.A.; Pozumentov, I.E. Statistical characteristics of adaptive antenna arrays with constraints. Izvestiya Vuzov. Radiofizika, 1981, Vol. 24, No. 5, p. 577-585.
Su, Y.L.; Shan, T.J.; Widrow, B. Parallel spatial processing: a cure for signal cancellation in adaptive arrays. IEEE Trans., 1986, Vol. AP-34, No. 3, p. 347-355.
Mal'tsev, A.A. Analysis of characteristics of adaptive antenna arrays at account rapid parameters fluctuations. Izvestiya vuzov. Radiofizika, 1987, Vol. 30, No. 8, p. 1013-1022.
Ignatenko, S.V.; Maltsev, A.A. Adaptive antenna arrays statistical characteristics in processing of discrete signals with correlated samples. Izvestiya vuzov. Radiofizika, 1994, Vol. 37, No. 12, p. 1532-1545.
Monzingo, R.A.; Miller, T.W. Introduction to Adaptive Arrays. New York: John Wiley, 1980.
