UWB slot antenna on shielding can for high accuracy positioning application
43-45
29.Cnf-313 Paper View Page
Title
Linear Time-Packing Detectors for Optical Feeder Link in High Throughput Satellite Systems
Authors
Dr. Joan Bas, Centre Tecnològic de Telecomunicacions de Catalunya, Barcelona, Spain Dr. Alexis Dowhuszko, Aalto University, Helsinki, Finland
Abstract
This paper studies the performance of linear detectors when used to recover the information transmitted on a time-packed optical feeder link of a High Throughput Satellite (HTS) system. More precisely, a real-valued time-packed M-ary Pulse Amplitude Modulation (M-PAM) signal is used to modulate the intensity of the laser diode beam with an external Mach-Zehnder Modulator (MZM). At the receiver side, the signal samples are recovered with a photo-detector, and the sequence of payload bits to be encapsulated into the 5G radio frame can be optimally recovered with the aid of a Viterbi equalizer. However, as the modulation order of the M-PAM signal grows, as well as the overlapping factor of time-packing increases and/or the roll-off factor of the pulse-shaping filter decreases, the number of trellis states that are needed to recover the transmitted bit sequence successfully grows notably. To address this issue, this paper studies the performance of two low-complexity linear equalization strategies, namely truncated Minimum Mean Square Error (MMSE) and adaptive MMSE equalizers. As expected, though being sub-optimal, both linear detectors are able to mitigate the impact of the Inter-Symbol Interference (ISI) that time-packing introduces, enabling a better spectral efficiency when compared to baseline M-PAM transmissions without overlapping.
1st Mosharaka International Conference on Emerging Applications of Electrical Engineering (MIC-ElectricApps 2020)
Congress
2020 Global Congress on Electrical Engineering (GC-ElecEng 2020), 4-6 September 2020, Valencia, Spain
Pages
21-26
Topics
High Throughput Satellites Channel Equalization
ISSN
2227-331X
DOI
BibTeX
@inproceedings{313ElecEng2020,
title={Linear Time-Packing Detectors for Optical Feeder Link in High Throughput Satellite Systems},
author={Joan Bas, and Alexis Dowhuszko},
booktitle={2020 Global Congress on Electrical Engineering (GC-ElecEng 2020)},
year={2020},
pages={21-26},
doi={}},
organization={Mosharaka for Research and Studies}
}
