44 citations · 119 across the 26 of their papers we have counts for
8 papers · 1 filter
BER measurements in the evaluation of operation correctness of VSAT modem traffic interfaces
Jan M. Kelner, Bogdan Uljasz, Leszek Nowosielski
This paper presents using bit error rate (BER) measurements to evaluate operation correctness of traffic (input-output) interfaces in modem of very small aperture terminal (VSAT).…
Correlation properties of signal at mobile receiver for different propagation environments
Cezary Ziolkowski, Jan M. Kelner, Leszek Nowosielski
An issue of the parameter selection in various branches of a multi-antenna receiver system determines its effectiveness. A significant effect on these parameters are correlation pr…
Path loss model modification for various gains and directions of antennas
Jan M. Kelner, Cezary Ziolkowski
Emerging telecommunication technologies like 5G, green communications, and massive MIMO contribute to the use of directional antennas and beamforming. For this reason, modern propa…
Evaluation of angular dispersion for various propagation environments in emerging 5G systems
Jan M. Kelner, Cezary Ziolkowski, Bogdan Uljasz
Angular dispersion is the effect of a multi-path propagation observed in received signals. An assessment of this phenomenon is particularly important from the viewpoint of emerging…
Comparison of angular spread for 6 and 60 GHz based on 3GPP standard
Jan M. Kelner, Cezary Ziolkowski, Bogdan Uljasz
In an urban environment, a multipath propagation is one of the basic phenomena affecting a quality of received signals. This causes dispersions in time and angular domains. Basic p…
Modeling the distribution of the arrival angle based on transmitter antenna pattern
Cezary Ziolkowski, Jan M. Kelner, Leszek Nowosielski +1
An angular distribution of received signals has a significant impact on their spectral and correlational properties. Most of angular dispersion models do not consider antenna patte…
Statistical evaluation of the azimuth and elevation angles seen at the output of the receiving antenna
Cezary Ziolkowski, Jan M. Kelner
A method to evaluate the statistical properties of the reception angle seen at the input receiver that considers the receiving antenna pattern is presented. In particular, the impa…
Radio bearing of sources with directional antennas in urban environment
Cezary Ziolkowski, Jan M. Kelner
This paper focuses on assessing the limitations in the direction-finding process of radio sources with directional antennas in an urbanized environment, demonstrating how signal so…