On Board Processor and Processing Strategies for Next Generation Reconfigurable Satellite Payloads

Abstract

Today, the increasing demand in higher data rates necessitates new methods as well as higher flexibility for satellite telecommunication payloads in order to address a variety of applications and customers. This paper presents one of these processing strategies that is applicable to today's processing satellite payloads aiming to meet those demands. For this purpose, a two-tier filter bank is designed as part of a digital onboard processor, which first divides the spectrum at the output of the ADC into a number of sub-bands extracting all the stacked channels in the digital domain. Following the analysis section of the first tier of operations, the extracted channels go under a secondary channelisation process to obtain much finer granularity of 31.25 kHz or 50 kHz depending on the communication standard used for data transmission. The implementation of the channeliser was delivered on a bit-true simulation model and the input and the output of the channelisers were compared and evaluated both in the time and frequency domains.

Cognitive Interference Cancellation with Digital Channelizer for Satellite Communication

“…To solve such a problem, the bandwidth of the subchannel in the digital channelizer is minimized for fine granularity of the transponder. In general, for efficient implementation, a digital filter bank is used for a digital channelizer [6][7][8]. Because of their wide transmission coverage, satellite communication systems are more vulnerable to interference that is generated in a wide area [9][10][11].…”

Optimization of cost and capacity of broadband satellite system and resources management using machine learning techniques

“…deviation (𝜃 𝑚 ) as a function of the separation between the feed [68], [69] Fig. 22 Map Transformations de Satellite Spot Beams. Fig.…”

“…An additional important factor is onboard signal processing, which will allow better connectivity and flexibility to meet changing traffic patterns and demands, adaptive beam training, and jump and interference management to increase capacity [22].…”

“…Satellite users require a service from the satellite in the form of a specific data rate. In order to provide a satisfactory service to all its users, that is, to provide at least the required throughput to each user, there are multiple resources available to a multi-beam communication satellite, which are mostly defined by the payload architecture and operational constraints [22]. Besides the beams, a satellite also has spectrum and power resources that must be shared among all active beams.…”