A multi-rate DPSK modem for free-space laser communications

NW Spellmeyer, CA Browne… - Free-Space Laser …, 2014 - spiedigitallibrary.org
The multi-rate DPSK format, which enables efficient free-space laser communications over a
wide range of data rates, is finding applications in NASA's Laser Communications Relay …

Performance of single and dual-polarized optically preamplified M-ary PPM systems with finite extinction ratios over FSO fading channels

T Landolsi, AF Elrefaie - Optics communications, 2016 - Elsevier
M-ary pulse position modulation (PPM) systems have been considered in free-space optical
(FSO) communications, optical fiber links, and passive optical networks. In this paper, we …

Generalized spatial acquisition for a space-based adaptive communications node optical terminal

T Ulmer, S Ramakrishnan, JD Moores… - Free-Space Laser …, 2023 - spiedigitallibrary.org
The DARPA Space-Based Adaptive Communications Node (Space-BACN) optical terminal
will be a low-cost reconfigurable optical intersatellite link (OISL) terminal capable of …

Use of commercially available fiber optic components in emerging space laser communications applications: Optimizing performance, cost, and reliability

NW Spellmeyer - 2021 Optical Fiber Communications …, 2021 - ieeexplore.ieee.org
Use of Commercially Available Fiber Optic Components in Emerging Space Laser
Communications Applications: Optimizing Performance Page 1 Use of Commercially …

Implementing and testing generalized pointing, acquisition, and tracking for a space-based adaptive communication node (Space-BACN)

TG Ulmer, B Reynolds, JD Moores… - Free-Space Laser …, 2024 - spiedigitallibrary.org
As lasercom transitions from individual demonstrations to wide-spread deployment,
diverging standards and proprietary implementations will impede interoperability between …

Sensitive clock recovery for multi-rate DPSK optical receivers

NW Spellmeyer, CD Burton, DO Caplan… - … on Space Optical …, 2015 - ieeexplore.ieee.org
Robust clock recovery is essential for optical receivers that can operate over a wide range of
data rates. The multi-rate burst-mode DPSK format that is finding applications in NASA's …

[PDF][PDF] 新型的用于大气激光通信的6 偏振键控调制方式

袁学光, 张阳安, 张锦南, 张明伦 - Acta Optica Sinica, 2014 - researching.cn
摘要提出了一种新型的用于大气激光通信的6 偏振键控调制方式, 理论分析和仿真结果表明,
光信号的偏振态和偏振度在不同大气信道模型中经过长距离传输后保持不变 …

Effects of pointing errors and channel fading on the performance of free‐space optically‐preamplified PPM systems

T Landolsi, AF Elrefaie - International Journal of …, 2016 - Wiley Online Library
In this paper, we study the impact of pointing errors and channel fading on the performance
of free‐space, optically preamplified, M‐ary PPM systems. We consider two types of free …

Error performance analysis of optically-preamplified QPSK M-ary PPM systems over atmospheric turbulent channels

T Landolsi, AF Elrefaie - 2016 10th International Symposium on …, 2016 - ieeexplore.ieee.org
Fading experienced in free-space optical channels is known to impede the performance of
pulse position modulation (PPM) communication systems. In this paper, we study the effects …

A Scheme of 6-PolSK Modulation for Atmospheric Laser Communication

X Yuan, J Zhang, ML Zhang - Asia Communications and Photonics …, 2013 - opg.optica.org
A novel modulation scheme of 6-PolSK for atmospheric laser communication is proposed.
Theoretical analysis demonstrates that the SOPs and DOP of light wave can be well …