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We demonstrate a 4,294,967,296-ary quadrature amplitude modulation (QAM) based Y-00 quantum stream cipher system carrying 160-Gb/s 16-QAM signal transmitted over 320-km SSMF. The ultra-dense QAM cipher template is realized by an integrated…

Signal Processing · Electrical Eng. & Systems 2021-02-24 Xi Chen , Ken Tanizawa , Peter Winzer , Po Dong , Junho Cho , Fumio Futami , Kentaro Kato , Argishti Melikyan , Kw Kim

Full Duplex (FD) technology is considered as one of the next big leap in the evolution of modern WLANs. Allowing a node to simultaneously transmit a data frame while in receive mode, can theoretically double the system throughput. However,…

Networking and Internet Architecture · Computer Science 2026-05-25 Anastasios C. Politis , Constantinos S. Hilas , Hristos T. Anastassiu

Full Duplex (FD) communication can revolutionize wireless communications as it avoids using independent channels for bi-directional communications. This work generalizes the point-to-point FD communication in millimeter wave (mmWave) band…

Information Theory · Computer Science 2022-01-06 Chandan Kumar Sheemar , Dirk Slock

Optical single-sideband (SSB) modulation features high spectral efficiency, substantial dispersion tolerance, and straightforward detection, making it a versatile technology for applications in optical communications, microwave photonics,…

We implemented a flexible transmission system operating at adjustable data rate and fixed bandwidth, baudrate, constellation and overhead using probabilistic shaping. We demonstrated in a transmission experiment up to 15% capacity and 43%…

Information Theory · Computer Science 2015-09-30 Fred Buchali , Georg Böcherer , Wilfried Idler , Laurent Schmalen , Patrick Schulte , Fabian Steiner

Recent work has shown the feasibility of single-channel full-duplex wireless physical layer, allowing nodes to send and receive in the same frequency band at the same time. In this report, we first design and implement a real-time…

Networking and Internet Architecture · Computer Science 2011-07-05 Achaleshwar Sahai , Gaurav Patel , Ashutosh Sabharwal

Future wireless networks will extensively rely upon bandwidths centered on carrier frequencies larger than 10GHz. Indeed, recent research has shown that, despite the large path-loss, millimeter wave (mmWave) frequencies can be successfully…

Information Theory · Computer Science 2016-02-25 Stefano Buzzi , Carmen D'Andrea , Tommaso Foggi , Alessandro Ugolini , Giulio Colavolpe

Pre-shared entanglement can significantly boost communication rates in the regime of high thermal noise, and a low-brightness transmitter. In this regime, the ratio between the entanglement-assisted capacity and the Holevo capacity, the…

Quantum Physics · Physics 2022-01-03 Saikat Guha , Quntao Zhuang , Boulat Bash

This paper presents a physical model for Single Carrier-Frequency Division Mutliple Access (SC-FDMA). We specifically show that by using mutlirate signal processing we derive a general time domain description of Localised SC-FDMA systems…

Information Theory · Computer Science 2014-04-09 Bouchra Benammar , Nathalie Thomas , Marie-Laure Boucheret , Charly Poulliat , Mathieu Dervin

Secure key rate (SKR) of point-point quantum key distribution (QKD) is fundamentally bounded by the rate-loss limit. Recent breakthrough of twin-field (TF) QKD can overcome this limit and enables long distance quantum communication, but its…

Quantum Physics · Physics 2023-08-08 Lai Zhou , Jinping Lin , Yuan-Mei Xie , Yu-Shuo Lu , Yumang Jing , Hua-Lei Yin , Zhiliang Yuan

We demonstrate 1 Tbit/s/$\lambda$ single-span transmission over a heterogeneous link consisting of graded-index 50 $\mu$m core multi-mode fiber and 6LP few-mode fiber using a Kramers-Kronig receiver structure. Furthermore, the link budget…

Enabled by channel adaptive bit and power loading, we experimentally demonstrate discrete multitone transmission at 56Gb/s with simple intensity modulation and direct detection and achieve 50 km reach in the 1.55um window.

Signal Processing · Electrical Eng. & Systems 2020-09-22 Annika Dochhan , Laia Nadal , Helmut Griesser , Michael Eiselt , Michela Svaluto Moreolo , Jörg-Peter Elbers

We consider network-assisted full-duplex (NAFD) cell-free massive multiple-input multiple-output (CF-mMIMO) systems, where full-duplex (FD) transmission is virtually realized via half-duplex (HD) hardware devices. The HD access points (APs)…

Information Theory · Computer Science 2023-04-17 Mohammadali Mohammadi , Tung T. Vu , Hien Quoc Ngo , Michail Matthaiou

Silicon photonics has emerged as the leading candidate for implementing ultralow power wavelength division multiplexed communication networks in high-performance computers, yet current components (lasers, modulators, filters, and detectors)…

Extensions of the split-step Fourier method (SSFM) for Schr\"odinger-type pulse propagation equations for simulating femto-second pulses in single- and two-mode optical communication fibers are developed and tested for Gaussian pulses. The…

Numerical Analysis · Mathematics 2015-04-07 Ralf Deiterding , Stephen W. Poole

We propose and model an optical communication scheme for short distance datacom links based on the distribution of information across a wide comb spectrum. This modulation format, orthogonal delay division multiplexing, allows the…

Optics · Physics 2023-10-27 Andrea Zazzi , Jeremy Witzens

A novel transmission scheme is introduced for efficient data transmission by conveying additional information bits through jointly changing the index and number of active subcarriers within each orthogonal frequency division multiplexing…

Signal Processing · Electrical Eng. & Systems 2020-04-03 Ahmad M. Jaradat , Jehad M. Hamamreh , Huseyin Arslan

In this paper, to the best of our knowledge, we propose the first multi-rate Nyquist-subcarriers modulation (SCM) for C-band 100Gbit/s signal transmission over 50km dispersion-uncompensated link. Chromatic dispersion (CD) introduces severe…

Information Theory · Computer Science 2022-04-06 Haide Wang , Ji Zhou , Jinlong Wei , Dong Guo , Yuanhua Feng , Weiping Liu , Changyuan Yu , Dawei Wang , Zhaohui Li

Modern radio telescopes like the Square Kilometer Array (SKA) will need to process in real-time exabytes of radio-astronomical signals to construct a high-resolution map of the sky. Near-Memory Computing (NMC) could alleviate the…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-05-11 Stefano Corda , Bram Veenboer , Ahsan Javed Awan , Akash Kumar , Roel Jordans , Henk Corporaal

We demonstrate a polarization-managed 8-dimensional modulation format that is time domain coded to reduce inter-channel nonlinearity. Simulation results show a 2.33 dB improvement in maximum net system margin (NSM) relative to polarization…