Results 171 to 180 of about 910,579 (228)

High-speed Faster-than-Nyquist Optical Transmission

CLEO Pacific Rim Conference, 2018
Faster-than-Nyquist (FTN)signaling is discussed both theoretically and experimentally. Several schemes of FTN signal generation and reception are compared with emphasize on high-speed transmission with 16-QAM format.
Fan Zhang, Yixiao Zhu, Pengfei Wang, Chuanchuan Yang   +3 more
openaire   +1 more source

Cholesky Precoded Faster Than Nyquist Signalling with High Compression

National Conference on Communications
Developing equalizers for Faster- Than-Nyquist (FTN) signals presents a significant challenge, and precoding offers a low-complexity alternative. In particular, employing a Cholesky factorization-based precoding enables us to achieve a symbol-by-symbol ...
Shubham Paul, Nambi Seshadri, R. D. Koilpillai   +2 more
semanticscholar   +1 more source

Linear precoding for Faster-than-Nyquist signaling

2017 3rd IEEE International Conference on Computer and Communications (ICCC), 2017
Faster-than-Nyquist (FTN) signaling is a nonorthogonal transmission scheme, in which the pulses appear faster than the rate known from the Nyquist intersymbol interference (ISI)-free transmission criterion. Due to the violation of the Nyquist theorem, while a higher transmission rate is offered, ISI is introduced and the receiver complexity is greatly ...
Heng Wang, Aijun Liu, Xiaohu Liang, Siming Peng, Ke Wang   +4 more
openaire   +1 more source

Faster-than-Nyquist Signaling for Optical Communications

2018 23rd Opto-Electronics and Communications Conference (OECC), 2018
In this paper, we will discuss the faster-than-Nyquist (FTN) signaling for optical communications, including the single-carrier and multi-carrier FTN signaling.
Yaojun Qiao, Ji Zhou, Mengqi Guo, Xizi Tang, Jia Qi, Yueming Lu   +5 more
openaire   +1 more source

Polar coding for faster-than-Nyquist signaling

2017 IEEE/CIC International Conference on Communications in China (ICCC), 2017
A polar coding scheme for faster than Nyquist (FTN) signaling system, named PcFTN, is proposed in this paper and turbo equalization is adopted to detect the received signal. First, the characteristics of the extrinsic information transfer (EXIT) curve both for polar decoder and FTN detector are analyzed. Then the construction method for polar codes are
Qingshuang Zhang, Aijun Liu, Hao Liang, Xuan Yi   +3 more
openaire   +1 more source

Fundamentals of Faster-than-Nyquist Signaling

2016
This chapter presents the fundamentals of Faster-than- Nyquist (FTN) signaling. As originally introduced, FTN increases the bit-rate in the signaling bandwidth by packing symbols closer in time, at the cost of introducing intersymbol interference (ISI).
Angelos D. Liveris, Costas N. Georghiades   +1 more
openaire   +1 more source

A Novel Message Passing Algorithm for Soft-Output Detection in Faster-than-Nyquist Multicarrier Systems

International Workshop on Signal Processing Advances in Wireless Communications
In this manuscript, we focus on the problem of soft-output detection of spectrally efficient frequency division multiplexing in the presence of frequency-selective fading channels. A novel detection algorithm, resulting from a message passing approach to
Michele Mirabella, Pasquale Di Viesti, G. Vitetta   +2 more
semanticscholar   +1 more source

Precoded Faster-Than-Nyquist Signaling Using Optimal Power Allocation for OTFS

IEEE Wireless Communications Letters
A precoded orthogonal time frequency space (OTFS) modulation scheme relying on faster-than-Nyquist (FTN) transmission over doubly selective fading channels is proposed, which enhances the spectral efficiency and improves the Doppler resilience. We derive
Zekun Hong, S. Sugiura, Chao Xu, Lajos Hanzo   +3 more
semanticscholar   +1 more source

Multiplication-free and hardware-efficient baud-rate timing error detector for Nyquist and faster than Nyquist optical IM/DD systems.

Optics Letters
Clock recovery (CR) algorithms that support higher baud rates and advanced modulation formats are crucial for short-distance optical interconnections, and it is desirable to push CR to operate at baud rate with minimal computing resources and power.
Jianwei Tang, Jinlong Wei, Junpeng Liang, Zhaopeng Xu, Tianfeng Zhao, Chen Cheng, Yaguang Hao, Bang Yang, Zhongliang Sun, Ke Li, Yunchen Li, Lingjun Zhou, Zhixue He, Yanfu Yang, Weisheng Hu   +14 more
semanticscholar   +1 more source

Faster-Than-Nyquist Signaling With Index Modulation

IEEE Wireless Communications Letters, 2017
In this letter, we propose a novel faster-than-Nyquist (FTN) transmission scheme relying on the time-domain single-carrier index-modulation (IM) concept. In the proposed FTN with IM (FTN-IM) transmitter, a subset of time-domain FTN symbols are activated, where the combination of the activated symbols conveys additional information further to the ...
Takumi Ishihara, Shinya Sugiura
openaire   +1 more source