Results 81 to 90 of about 910,579 (228)

Optimizing the Shape of Faster-Than-Nyquist (FTN) Signals With the Constraint on Energy Concentration in the Occupied Frequency Bandwidth

open access: yesIEEE Access, 2020
The achievement of the boundary values of spectral efficiency is associated with the development of methods for generating and receiving signals with a compact spectrum. The reason is a constant increase in the capacity of existing communication channels
Sergey B. Makarov   +6 more
doaj   +1 more source

Filterless Reception of Terabit, Faster Than Nyquist Superchannels With 4 GHz Electronics

open access: yesJournal of Lightwave Technology
Data transmission speeds in excess of 1 Terabit per second (Tbit/s) are predicted with the evolving needs of modern applications, ranging from new communication technologies to data intensive computing and emerging paradigms like internet-of-things and ...
Abhinand Venugopalan   +4 more
semanticscholar   +1 more source

Decision Feedback Equalization-Based Low-Complexity Interference Cancellation and Signal Detection Technique Based for Non-Orthogonal Signaling

open access: yesMathematics
FTN signalling is an effective communication method that achieves a high spectral efficiency. However, employing a symbol rate faster than the Nyquist rate disrupts the orthogonality between symbols, leading to unavoidable inter-symbol interference (ISI).
Myung-Sun Baek, Hyoung-Kyu Song
doaj   +1 more source

Improving OFDM: Multistream faster than Nyquist signaling [PDF]

open access: yes, 2006
Mazo's concept of Faster Than Nyquist signaling is extended to pulse trains that modulate adjacent subcarriers, in a manner similar to orthogonal frequency division multiplex (OFDM) transmission. Despite pulses that are faster than the Nyquist limit and subcarriers that significantly overlap, the transmission system achieves the isolated pulse ...
Anderson, John B, Rusek, Fredrik
openaire   +1 more source

A Survey on Faster-Than-Nyquist Signaling

open access: yesHans Journal of Wireless Communications, 2016
在数字通信系统中,奈奎斯特准则指出,为了实现无码间干扰的传输,符号速率必须满足奈奎斯特准则。然而1975年Mazo发现在带限加性高斯白噪声信道中,当码元速率超过奈奎斯特速率在25%以内时,信号的归一化最小欧式距离并不会减小,并称为Faster-Than-Nyquist signaling (超奈奎斯特,FTN)。本文首先介绍FTN传输的发展历史,分析FTN系统的Mazo限,并对FTN传输以及奈奎斯特速率下的限制信道容量进行比较。从仿真结果可以看出,当脉冲存在过剩带宽时,FTN传输可以得到比奈奎斯特速率下更高的信道容量。 In digital communication system, the Nyquist criterion states that the symbol rate must ...
openaire   +1 more source

Enhanced Carrier Phase Recovery Using Dual Pilot Tones in Faster-than-Nyquist Optical Transmission Systems

open access: yesPhotonics
Compared with high spectrum efficiency faster-than-Nyquist (FTN) backbone network, an enhanced carrier phase recovery based on dual pilot tones is more sensitive to capital cost in FTN metropolitan areas as well as inter-datacenter optical networks.
Jialin You   +3 more
doaj   +1 more source

Peak-to-Average Power Ratio of Multicarrier Faster-Than-Nyquist Signals: Distribution, Optimization and Reduction

open access: yesIEEE Access, 2018
Multicarrier faster-than-Nyquist (MFTN) is a spectral efficient transmission scheme for future communication systems. However, as one of the most important drawbacks of multicarrier transmission systems, the peak-to-average power ratio (PAPR) of MFTN ...
Aijun Liu   +5 more
doaj   +1 more source

Interblock-interference-free precoding using square-root decomposition for faster-than-Nyquist signaling

open access: yesDigital Communications and Networks
Precodings using square-root decomposition, including Cholesky and G-To-Minus-Half (GTMH) precodings, are promising for eliminating the Faster-Than-Nyquist (FTN)-induced Intersymbol-Interference (ISI).
Yan Wang   +4 more
doaj   +1 more source

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