| 摘要 |
FIELD: electronics.SUBSTANCE: invention relates to adaptive filtration, in particular to digital signal processing systems, in which for protection against signal distortion adaptive antenna systems are used in communication channel. Signal is processed by a broadband adaptive antenna system (BAAS) operating based on a Wiener algorithm and a minimum mean square error (MMSE) criterion, wherein output signal y(k) from BAAS, which is used as a first stage, is processed with an additional adaptive filter, which is used as a second stage, controlled by a Kalman algorithm, total reference estimation signalfor BAAS and additional adaptive filter and error signal (e)(k) for additional adaptive filter, generated by difference between total reference estimation signaland output signalwith additional adaptive filter, transmitted to a decision circuit, which generates total reference estimation signal, which provides combined control communication between BAAS and additional adaptive filter, wherein size Lof sliding window of Kalman algorithm is less than size Lof sliding window of Wiener algorithm controlled by total reference estimation signaland error signal (e)(k) for BAAS, generated by difference between total reference estimation signaland output signal y(k) from BAAS.EFFECT: technical result consists in improvement of quality of processing signals by reducing effect of interference and noise.1 cl, 2 dwg |
