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Coherent free-space optical communications: Opportunities and challenges
The ever-increasing data rate demand for wireless systems is pushing the physical limits of
standalone radio-frequency communications, thus fostering the blooming of novel high …
standalone radio-frequency communications, thus fostering the blooming of novel high …
Survey on free space optical communication: A communication theory perspective
Optical wireless communication (OWC) refers to transmission in unguided propagation
media through the use of optical carriers, ie, visible, infrared (IR), and ultraviolet (UV) bands …
media through the use of optical carriers, ie, visible, infrared (IR), and ultraviolet (UV) bands …
800G DSP ASIC design using probabilistic sha** and digital sub-carrier multiplexing
The design of application-specific integrated circuits (ASIC) is at the core of modern ultra-
high-speed transponders employing advanced digital signal processing (DSP) algorithms …
high-speed transponders employing advanced digital signal processing (DSP) algorithms …
Probabilistic constellation sha** for optical fiber communications
We review probabilistic constellation sha** (PCS), which has been a key enabler for
several recent record-setting optical fiber communications experiments. PCS provides both …
several recent record-setting optical fiber communications experiments. PCS provides both …
Bandwidth efficient and rate-matched low-density parity-check coded modulation
A new coded modulation scheme is proposed. At the transmitter, the concatenation of a
distribution matcher and a systematic binary encoder performs probabilistic signal sha** …
distribution matcher and a systematic binary encoder performs probabilistic signal sha** …
Constant composition distribution matching
Distribution matching transforms independent and Bernoulli (1/2) distributed input bits into a
sequence of output symbols with a desired distribution. Fixed-to-fixed length, invertible, and …
sequence of output symbols with a desired distribution. Fixed-to-fixed length, invertible, and …
On probabilistic sha** of quadrature amplitude modulation for the nonlinear fiber channel
Different aspects of probabilistic sha** for a multispan optical communication system are
studied. First, a numerical analysis of the additive white Gaussian noise (AWGN) channel …
studied. First, a numerical analysis of the additive white Gaussian noise (AWGN) channel …
Joint coding-modulation for digital semantic communications via variational autoencoder
Semantic communications have emerged as a new paradigm for improving communication
efficiency by transmitting the semantic information of a source message that is most relevant …
efficiency by transmitting the semantic information of a source message that is most relevant …
Normalized generalized mutual information as a forward error correction threshold for probabilistically shaped QAM
We show that the normalized generalized mutual information represents an excellent
forward error correction (FEC) threshold for uniform as well as for probabilistically shaped …
forward error correction (FEC) threshold for uniform as well as for probabilistically shaped …
Probabilistic sha** and forward error correction for fiber-optic communication systems
This tutorial paper provides a foundation for integrating probabilistic sha** (PS) and
forward error correction (FEC). A layered PS-FEC architecture consisting of a PS encoder …
forward error correction (FEC). A layered PS-FEC architecture consisting of a PS encoder …