Nyquist-mPPM-QPSK modulation for power and spectrum efficient optical communications

M Yu, Y Li, J Pang, D Kong, L Yue, W Li… - Optical Fiber …, 2016 - opg.optica.org
Nyquist-mPPM-QPSK modulation format is proposed with high power efficiency and
doubled spectrum efficiency compared with mPPM-QPSK, in particular, a 1.3 dB power …

Highly power-efficient nyquist-mPPM-LQAM modulation with enhanced spectrum efficiency

M Yu, Y Li, J Pang, D Kong, Z Yang… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
Nyquist-mPPM-LQAM is proposed, theoretically analyzed, and experimentally demonstrated
for power-and spectrum-efficient optical modulation. Based on Nyquist shaping, Nyquist …

Performance of optically-preamplified, direct-detection, m-ary ppm for inter-satellite links

SH Mohamed, AF Elrefaie, MS Hassan… - 2019 Wireless …, 2019 - ieeexplore.ieee.org
In this paper, we evaluate the end-to-end performance of optically-preamplified, direct-
detection, 16-ary and 64-ary Pulse Position Modulation (PPM) receivers with optical Fabry …

Performance evaluation of optically-preamplified hybrid QPSK M-ary PPM systems with finite extinction ratios

T Landolsi, MS Hassan, AF Elrefaie, S Hamid - Optical Fiber Technology, 2015 - Elsevier
In this paper, we investigate the impact of finite extinction ratios on the error performance of
optically-preamplified homodyne hybrid PDM-QPSK M-ary PPM (PQ-mPPM) systems. The …

Error performance of optically preamplified hybrid BPSK-PPM systems with transmitter and receiver imperfections

T Landolsi, AF Elrefaie, S Hamid… - Photonic Network …, 2017 - Springer
In this paper, we investigate the impact of the transmitter finite extinction ratio and the
receiver carrier recovery phase offset on the error performance of two optically preamplified …