Beamforming and Scheduling Techniques for Multibeam DVB-S2X Over Rainy Fading Satellite Channel

Sumaya D Awad,Aduwati Sali,Mandeep S J Singh,Ali M Al-Saegh,R S A Raja Abdullah,Mohanad M Al-Wani

doi:10.1109/access.2020.2976709

Sumaya D Awad, Aduwati Sali + Show 4 more

Open Access

https://doi.org/10.1109/access.2020.2976709

Copy DOI

Abstract

The extension of the digital video broadcasting second generation standard (DVB-S2X) for transmission over satellite has been introduced recently with its novel superframe structure, which is a key enabler for applying interference management techniques, such as precoding, to multibeam high throughput geosynchronous (GEO) satellite systems operating in the Ka-band. This paper presents the first full design of DVB-S2X system with multi-user-multiple-input-single-output (MU-MISO DVB-S2X), with most of its modulation and coding schemes (MODCODs), over rainy fading channels. The atmospheric impairments on the Ka-band satellite channel are considered, especially the rainfall effect, which is the most effective atmospheric impairment that degrades the system performance. Two rainy fading channels are designed, one for tropical region and the other for temperate region, using real rain data from these areas. In addition, the user scheduling influence on the bit error rate (BER) performance of MU-MISO DVB-S2X system is tested and compared with the conventional MISO DVB-S2X system. Simulation results show that the proposed system can achieve a significant improvement in terms of BER performance with at least 20 dB for 128 amplitude and phase shift keying (128APSK) MODCOD over the tropical channel and 14 dB for 32APSK MODCOD over temperate channel when the number of users is six. The enhancement in error rates proves that MU-MISO DVB-S2X system with scheduling can be the key solution for DVB-S2X system performance degradation in fading channels, especially rainy fading channels.

Highlights

INTRODUCTIONWith the fast development of satellite technology and the increasing demand for high data rate broadband services in satellite communications, multibeam satellite system in concurrence with aggressive frequency re-use are the most proper candidates for the generation satellite
With the fast development of satellite technology and the increasing demand for high data rate broadband services in satellite communications, multibeam satellite system in concurrence with aggressive frequency re-use are the most proper candidates for the generation satelliteThe associate editor coordinating the review of this manuscript and approving it for publication was Donatella Darsena .communications [1], [2]
This paper considered the effect of rainy fading channels on bit error rate (BER) performance of DVB-S2X system in tropical and temperate areas

Summary

INTRODUCTION

With the fast development of satellite technology and the increasing demand for high data rate broadband services in satellite communications, multibeam satellite system in concurrence with aggressive frequency re-use are the most proper candidates for the generation satellite. Awad et al.: Beamforming and Scheduling Techniques for Multibeam DVB-S2X Over Rainy Fading Satellite Channel considered to study the throughput performance. The atmospheric impairments considered a serious problem in satellite communication in tropical regions, which are mostly characterized by heavy precipitation, especially at high frequencies. For these reasons, we introduce two rainy fading channel models, the first model is designed for tropical regions (high-fading channel), and the second model is designed for temperate regions (low-fading channel). Investigate the BER performance of our proposed MU-MISO-DVB-S2X system using the designed channel models, in order to give a prior visualization about DVB-S2X MODCODs functionality and error rates in these areas.

SYSTEM MODEL

RESULTS AND DISCUSSION

4: Generate the sparse parity matrix Q

SCHEDULING IN HIGH FADING SATTELITE CHANNEL

SCHEDULING IN LOW FADING SATTELITE CHANNEL

CONCLUSION