Abstract:
To further enhance the link stability of laser satellite communication (SatCom) systems, a direct current-biased optical orthogonal time-frequency-space (DCO-OTFS) modula...Show MoreMetadata
Abstract:
To further enhance the link stability of laser satellite communication (SatCom) systems, a direct current-biased optical orthogonal time-frequency-space (DCO-OTFS) modulation is proposed for free-space optical (FSO)-based SatCom. The proposed pilot-assisted DCO-OTFS can preserve the orthogonality in the delay-Doppler channel and achieve cost-effective signal compensation, thus alleviating the impact of fading effects in SatCom. In a 100 Gbps satellite-to-ground simulation, the OTFS-based system is developed and evaluated against traditional systems under various conditions. Simulation results demonstrate that the OTFS-based system achieves a power gain of 6 dB and exhibits robust resistance to pointing jitter. Moreover, with equivalent launch power, the OTFS-based system can reduce the receiver aperture diameter by 35% while maintaining comparable bit error rate performance.
Published in: IEEE Photonics Technology Letters ( Volume: 37, Issue: 11, 01 June 2025)
Funding Agency:
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
College of Electronic Information, Qingdao University, Qingdao, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Contents State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
College of Electronic Information, Qingdao University, Qingdao, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
