Next Generation Broadband Satellite Communication Systems

Abstract

For next generation satellite systems to provide cost effective network service it is essential to use efficient and advanced technologies for adding new satellites or upgrading legacy systems. This paper discusses the various technologies that are being developed and utilized for increasing the network capacity, improving service performance and reducing the cost of satellite systems. An overview of enabling technologies is presented describing the key architecture, capability and performance of the broadband satellite payload processor, digital transponder and satellite antenna developed by TRW. The various benefits of using these advanced features in satellites over the conventional "Bent Pipe" satellite systems are summarized. AIAA_1111 2 02S00729.154 American Institute of Aeronautics and Astronautics Recently launched Thuraya (L-Band) satellite uses a 12.25m mesh parabolic reflector while a 9m (L-Band) reflector is in production for the INMARSAT4 satellite.

Design of large polyphase filters in the Quadratic Residue Number System

“…The system specifications are derived from the analysis of channelizers used in the new generation of satellites for multimedia communications [4].…”

Performance of delay‐sensitive traffic in multi‐layered satellite IP networks with on‐board processing capability

“…On-board processing is a general term that refers to signal processing and routing functions implemented on-board the satellite that go beyond the amplification and frequency conversion performed in conventional, transparent satellite systems. The next-generation satellites extensively need to use OBP, including demodulation/remodulation, decoding/recoding, transponder/beam switching and routing to design cost-effective system solutions for the customer needs [17]. The OBP in satellites aims to eliminate the inherent disadvantages of the 'bent pipe' transponders.…”

“…The next-generation satellites extensively need to use OBP, including demodulation/remodulation, decoding/recoding, transponder/beam switching and routing to design cost-effective system solutions for the customer needs [17]. The OBP in satellites aims to eliminate the inherent disadvantages of the 'bent pipe' transponders.…”

On the Manipulation of JPEG2000, In-Flight, Using Active Components on Next Generation Satellites

“…In line with the anticipated advancement and to meet the growing demand for high data rates, much research has been focused on regenerative and full on board processing (OBP) payloads, advance mesh antennae, high speed communication system, optical satellite links, high speed transponders and miniaturisation of satellite components [7,8]. The first regenerative satellite payloads are operational or under construction, performing on-board MPEG-2 cell multiplexing and switching (e.g.…”