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  5. Evaluation of the influence of neodenticula jitter in the quadrature channels on the quality of functioning of telecommunications systems with digital beamforming

Evaluation of the influence of neodenticula jitter in the quadrature channels on the quality of functioning of telecommunications systems with digital beamforming

V.I. Slyusar, I.I. Sliusar, R.V. Kulyck, A.V. Myronov
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This paper analyzes the impact of jitter on the results of the estimation of parameters of signals in a digital antenna array. While the main emphasis is on the study of the quality of work with telecommunications systems to the DBF in case of impossibility to achieve the same magnitude of the jitter in the quadrature channel circuit analog-to-digital signal conversion. With this purpose we performed an analytical calculation of the ratio of amplitudes of the main and the complex-conjugate of the signal components of the responses with non-identical variances jitter in quadrature reception channels. The calculation results allow to formulate requirements to the relative values of neodenticula of jitter variances of the quadrature channels of the ADC, if it is determined acceptable level the magnitude of the complex conjugate components of the output of the digital phase detector in the frequency band.
Keywords: Jitter, digital telecommunications systems, beamforming, MIMO