Journal ArticleDOI
Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration
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TLDR
A transmission system with adjustable data rate for single-carrier coherent optical transmission is proposed, which enables high-speed transmission close to the Shannon limit, and it is experimentally demonstrated that the optical transmission of probabilistically shaped 64-QAM signals outperforms the transmission reach of regular 16- QAM and regular 64-ZAM signals.Abstract:
A transmission system with adjustable data rate for single-carrier coherent optical transmission is proposed, which enables high-speed transmission close to the Shannon limit. The proposed system is based on probabilistically shaped 64-QAM modulation formats. Adjustable shaping is combined with a fixed-QAM modulation and a fixed forward-error correction code to realize a system with adjustable net data rate that can operate over a large reach range. At the transmitter, an adjustable distribution matcher performs the shaping. At the receiver, an inverse distribution matcher is used. Probabilistic shaping is implemented into a coherent optical transmission system for 64-QAM at 32 Gbaud to realize adjustable operation modes for net data rates ranging from 200 to 300 Gb/s. It is experimentally demonstrated that the optical transmission of probabilistically shaped 64-QAM signals outperforms the transmission reach of regular 16-QAM and regular 64-QAM signals by more than 40% in the transmission reach.read more
Citations
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Proceedings ArticleDOI
Investigating probabilistic constellation shaping for dual-polarization PAM8 signals at different data rates
Kayden L. C. Kaller,Mihail Raytchev,Ahmed Galib Reza,Marcos Troncoso Costas,Liam P. Barry,Ahmad Atieh +5 more
TL;DR: In this paper , the effect of probabilistic constellation shaping on PAM8 system amplified using an optical semiconductor amplifier (SOA) was investigated using numerical simulation, where system performance improvement is achieved when PCS is used.
Key Technologies for High-Speed Si-Substrate LED Based Visible Light Communication
Wenqing Niu,Zengyi Xu,Yu Liu,Xianhao Lin,J. Cai,Jianyang Shi,Xiaolan Wang,Gang Wang,Jianli Zhang,Fengyi Jiang,Zhixue He,Shaohua Yu,Chao Shen,Junwen Zhang,Nan Chi +14 more
TL;DR: In this article , an optimized integrated 4×4 8-wavelength LED array and advanced digital signal processing (DSP) methods were used to demonstrate an ultra-high-speed VLC system.
Cooperative FSO and mmWave System for Reliable 200G Wireless Transmission
TL;DR: In this paper , a 3m hybrid free-space optics and millimeter-wave system for 200G stable wireless transmission is presented, where a time-adaptive probabilistic constellation shaping and a cross-domain entropy loading scheme are used to compensate for up to 15% data-rate reduction in the FSO link.
Proceedings ArticleDOI
Generalized Frequency Division Multiplexing Scheme Based on Probabilistic Shaping and Low Density Parity Check Codes
Junhong Ma,Qi Zhang,Xishuo Wang,Ran Gao,Xiangjun Xin,Feng Tian,Qinghua Tian,Yongjun Wang,Lan Rao +8 more
TL;DR: In this article, a scheme of generalized frequency division multiplexing (GFDM) systems combined with probabilistic shaping (PS) and low-density parity-check (LDPC) codes is proposed to improve performance of bit error rate (BER).
References
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Book
Information Theory and Reliable Communication
TL;DR: This chapter discusses Coding for Discrete Sources, Techniques for Coding and Decoding, and Source Coding with a Fidelity Criterion.
Journal ArticleDOI
Capacity Limits of Optical Fiber Networks
TL;DR: In this article, the capacity limit of fiber-optic communication systems (or fiber channels?) is estimated based on information theory and the relationship between the commonly used signal to noise ratio and the optical signal-to-noise ratio is discussed.
Journal ArticleDOI
Threshold Saturation via Spatial Coupling: Why Convolutional LDPC Ensembles Perform So Well over the BEC
TL;DR: The fundamental mechanism that explains why “convolutional-like” or “spatially coupled” codes perform so well is described, and it is conjecture that for a large range of graphical systems a similar saturation of the “dynamical” threshold occurs once individual components are coupled sufficiently strongly.
Journal ArticleDOI
Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation
TL;DR: A new coded modulation scheme is proposed that operates within less than 1.1 dB of the AWGN capacity 1/2 log2(1 + SNR) at any spectral efficiency between 1 and 5 bits/s/Hz by using only 5 modes.