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As the demand for 6G technologies continues to grow, the radio access infrastructure is expected to become increasingly dense. Cell-free (CF) Massive MIMO systems provide remarkable flexibility by enabling coherent service to users through…

网络与互联网体系结构 · 计算机科学 2025-03-18 Igor Zhilin , Evgenii Vinogradov , Ian Akyildiz

We show that the NLS systems with multiplicative noise, nonlinear damping and nonlocal dispersion exhibit a variety of interesting effects which may be useful for modelling the dynamical behavior of one- and two-dimensional molecular…

In optical communications, four-dimensional (4D) modulation formats encode information onto the quadrature components of two arbitrary orthogonal states of polarisation of the optical field. These formats have recently regained attention…

信号处理 · 电气工程与系统科学 2020-12-30 Gabriele Liga , Astrid Barreiro , Hami Rabbani , Alex Alvarado

Recent works have identified massive multiple-input-multiple-output (MIMO) as a key technology for achieving substantial gains in spectral and energy efficiency. Additionally, the turn to low-cost transceivers, being prone to hardware…

信息论 · 计算机科学 2016-05-26 Anastasios K. Papazafeiropoulos

We analyze scheduling algorithms for multiuser communication systems with users having multiple antennas and linear receivers. When there is no feedback of channel information, we consider a common round robin scheduling algorithm, and…

信息论 · 计算机科学 2016-11-18 Raymond H. Y. Louie , Matthew R. McKay , Iain B. Collings

Visual noise is often regarded as a disturbance in image quality, whereas it can also provide a crucial clue for image-based forensic tasks. Conventionally, noise is assumed to comprise an additive Gaussian model to be estimated and then…

计算机视觉与模式识别 · 计算机科学 2020-11-03 Mian Zou , Heng Yao , Chuan Qin , Xinpeng Zhang

Achieving reliable communication over different channels and modes is one of the main goals of Mode Division Multiplexing-Wavelength Division Multiplexing (MDM-WDM) communication networks. The reliability can be described by minimum Signal…

信号处理 · 电气工程与系统科学 2021-07-27 Mohammad Ali Amirabadi , Mohammad Hossein Kahaei , S. Alireza Nezamalhosseini

We have analyzed spectra of localized microwave transmitted through quasi-1D random samples to obtain the central frequency, linewidth and field speckle pattern of the modes for an ensemble of samples at three lengths. We find strong…

无序系统与神经网络 · 物理学 2012-10-02 Jing Wang

The analysis of modulation schemes for the physical layer network-coded two way relaying scenario is presented which employs two phases: Multiple access (MA) phase and Broadcast (BC) phase. It was shown by Koike-Akino et. al. that…

信息论 · 计算机科学 2012-03-27 Vijayvaradharaj T. Muralidharan , B. Sundar Rajan

Neuromorphic computing, inspired by the brain, promises extreme efficiency for certain classes of learning tasks, such as classification and pattern recognition. The performance and power consumption of neuromorphic computing depends…

新兴技术 · 计算机科学 2018-06-14 Baibhab Chatterjee , Priyadarshini Panda , Shovan Maity , Ayan Biswas , Kaushik Roy , Shreyas Sen

In most cases, structural health monitoring depends on the determination of the modal parameters of the first few modes of a structure. The data that are used to identify these modes by output-only methods include the structure response…

信号处理 · 电气工程与系统科学 2020-08-25 Gholamreza Jahangiri , Seyed Rasoul Nabavian , Mohammad Reza Davoodi , Bahram Navayi Neya , Seyedamin Mostafavian

The impact of spatial correlation on mutual information (MI) is analyzed for MIMO radar. Unlike the work done in literature for statistical MIMO radar, we consider the spatial correlation of the target matrix elements to study the…

信号处理 · 电气工程与系统科学 2020-03-10 Aya Mostafa Ahmed , Aydin Sezgin , Eduard A. Jorswieck

The effect of Kerr-induced optical fiber nonlinearities in C-band (5 THz) EDFA and C+L-band (12.5 THz) Raman-amplified optical communication systems has been studied considering the impact of third-order fiber dispersion. The performance of…

信号处理 · 电气工程与系统科学 2019-09-25 Nikita A. Shevchenko , Tianhua Xu , Cenqin Jin , Domaniç Lavery , Robert I. Killey , Polina Bayvel

After reviewing models and mitigation strategies for interchannel nonlinear interference (NLI), we focus on the frequency-resolved logarithmic perturbation model to study the coherence properties of NLI. Based on this study, we devise an…

信息论 · 计算机科学 2024-01-25 Marco Secondini , Erik Agrell , Enrico Forestieri , Domenico Marsella , Menelaos Ralli Camara

This paper provides the signal-to-interference-plus-noise ratio (SINR) complimentary cumulative distribution function (CCDF) and average data rate of the normalized SNR-based scheduling in an uplink cellular network using stochastic…

信息论 · 计算机科学 2018-02-08 Shotaro Kamiya , Koji Yamamoto , Seong-Lyun Kim , Takayuki Nishio , Masahiro Morikura

This paper will design non-linear frequency modulation (NLFM) signal for Chebyshev, Kaiser, Taylor, and raised-cosine power spectral densities (PSDs). Then, the variation of peak sidelobe level with regard to mainlobe width for these four…

信息论 · 计算机科学 2016-12-26 Roohollah Ghavamirad , Hossein Babashah , Mohammad Ali Sebt

In this paper, we investigate the impact of correlated fading on the performance of wireless multiple access channels (MAC) in the presence and absence of side information (SI) at transmitters, where the fading coefficients are modeled…

信息论 · 计算机科学 2022-05-04 Farshad Rostami Ghadi , Wei-Ping Zhu

We consider multiple-input multiple-output (MIMO) transmit beamforming systems with maximum ratio combining (MRC) receivers. The operating environment is Rayleigh-fading with both transmit and receive spatial correlation. We present exact…

信息论 · 计算机科学 2016-11-17 Matthew R. McKay , Alex J. Grant , Iain B. Collings

We study the effects of noise in two models of spiny dendrites. Through the introduction of different types of noise to both the Spike-diffuse-spike (SDS) and Baer-Rinzel (BR) models we investigate the change in behaviour of the travelling…

动力系统 · 数学 2015-03-19 Emma J. Coutts , Gabriel J. Lord

In the regime of strong mode coupling, the modal gains and losses and the modal group delays of a multimode fiber are known to have well-defined statistical properties. In mode-division multiplexing, mode-dependent gains and losses are…

光学 · 物理学 2013-01-15 Keang-Po Ho , Joseph M. Kahn