PAGE CONTENTS
Objectives
The purpose of this activity is to study, analyse and simulate new advanced techniques at physical and upper layers (these latter only to support the new devised physical layer techniques) for the forward and return link of future satellite networks, targeting the consumer and professional fixed and mobile terminal market. The goal is to increase the spectral and energy efficiency of the currently used solutions, enable higher data rates for the same link availability, with the end result of increasing the overall competitiveness of the satellite networks. The performance of such techniques shall be thoroughly investigated by means of analysis and computer simulations and their benefits at system level also estimated together with their expected complexity.
Challenges
RG1 has investigated the following techniques:
- Time and Frequency Packing
- FEC Optimisation (for channels with ISI)
- Constant Physical Layer Framing
- Pre-coding with “user-clustering”
- Interference Cancellation / Multi-User Detection at the Receiver
- Higher Order Modulation Schemes
RG2 has investigated the following techniques:
- FWD Link Adaptive Transmission
- FWD Link Receiver Equalisation
- Pre-Distortion at the User Terminal
- Random Access Channel Optimisation
- RTN Link Multi-User Detection at the Receiver for DAMA
- FWD and RTN Link FEC Optimisation
Pre-coding with “user-clustering” was selected as the most promising technology at the end of Task 1, detailed investigation was carried out in Tasks 2 and 3 for the physical layer (in particular synchronisation matters) and system level aspects respectively.
Plan
Task 1: Investigation of the Air Interface Enhancements (completed)
Task 2: Definition and Assessment of the New Air Interface (completed)
Task 3: System Performance Assessment and Technology
Roadmap (completed)
Current Status
The project was kicked off on 2012, December 1st. The final review and presentation took place on 2015, March 5th.
Companies
