A Novel Study of the SNIR Distributions of Ka-Band Satellite Systems
Open AccessA Ka-band high throughput satellite (HTS) system is a complex system. Recently, large dedicated simulation software have been created to select system architecture, parameter values and technologies tailored to the services such a system is to offer, and to predict the channel and system performances with optimized resource utilization before the system is put together to commerce operations. After more than three decades of experiments, studies and experiences, many characteristics of the Ka-band HTS systems are known. This has enabled the channel and system performance assessment in system design via simulation to be carried out within a much defined frame work with reduced simulation effort and cost. The HTS systems have brought about tremendous system capacity increase, but also significant co-color interferences (CCIs) that degrade the channel signal-to-noise-plus-interference ratio (SNIR) performance. Currently the CCIs in the SNIRs are treated either directly as spatial distribution by simulation estimation or as additive white Gaussian noise (AWGN) by Central Limit Theorem. The temporal CCI variations in the SNIRs are not considered. This study treats the CCIs of the SNIR as random variables (RVs). It considers both the temporal and spatial variations of the signal and the CCIs of the SNIRs with a simplified spatial distribution treatment. Taking the advantage of the particular characteristics of the HTS channel CCIs, it treats them collectively which results in significant computation reduction in the channel SNIR probability model development for channel SNIR performance assessment. The study further explores the spot beam downlink SNIR spatial distribution with a novel implementation feasible spot beam deployment procedure. By designing the mobile paths in the spot beam field, the high speed mobile path SNIR statistics and variation rates in the deployed spot beam field can be obtained. They aid in resource allocation estimation for the high speed mobiles of bullet trains, airplanes or ocean going vessels that are taking increasing amount of traffic in the communications satellite systems today.
- All rights reserved
Notice to Authors
If you are the author of this work and you have any questions about the information on this page, please use the Contact form to get in touch with us.