Channel (broadcasting)
View article: Double-slit photoelectron interference in strong-field ionization of the neon dimer
Double-slit photoelectron interference in strong-field ionization of the neon dimer Open
Wave-particle duality is an inherent peculiarity of the quantum world. The double-slit experiment has been frequently used for understanding different aspects of this fundamental concept. The occurrence of interference rests on the lack of…
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Digital communications : fundamentals and applications Open
For courses in Digital Communications. Exceptionally accessible, this book presents the often difficult concepts of digital communications in an easy-to- understand manner-without diluting the mathematical precision. Using a student-friend…
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Wireless Communications Through Reconfigurable Intelligent Surfaces Open
The future of mobile communications looks exciting with the potential new use cases and challenging requirements of future 6th generation (6G) and beyond wireless networks. Since the beginning of the modern era of wireless communications, …
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An Overview of Signal Processing Techniques for Millimeter Wave MIMO Systems Open
Communication at millimeter wave (mmWave) frequencies is defining a new era\nof wireless communication. The mmWave band offers higher bandwidth\ncommunication channels versus those presently used in commercial wireless\nsystems. The applic…
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Intelligent Reflecting Surface-Aided Wireless Communications: A Tutorial Open
Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of low-cost passive reflecting elements, IRS is capabl…
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Cell-Free Massive MIMO Versus Small Cells Open
A Cell-Free Massive MIMO (multiple-input multiple-output) system comprises a very large number of distributed access points (APs), which simultaneously serve a much smaller number of users over the same time/frequency resources based on di…
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Squeeze-and-Excitation Networks Open
The central building block of convolutional neural networks (CNNs) is the convolution operator, which enables networks to construct informative features by fusing both spatial and channel-wise information within local receptive fields at e…
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FFA-Net: Feature Fusion Attention Network for Single Image Dehazing Open
In this paper, we propose an end-to-end feature fusion at-tention network (FFA-Net) to directly restore the haze-free image. The FFA-Net architecture consists of three key components:1) A novel Feature Attention (FA) module combines Channe…
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Wireless Communications With Reconfigurable Intelligent Surface: Path Loss Modeling and Experimental Measurement Open
Reconfigurable intelligent surfaces (RISs) comprised of tunable unit cells\nhave recently drawn significant attention due to their superior capability in\nmanipulating electromagnetic waves. In particular, RIS-assisted wireless\ncommunicat…
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Over-the-Air Deep Learning Based Radio Signal Classification Open
We conduct an in depth study on the performance of deep learning based radio\nsignal classification for radio communications signals. We consider a rigorous\nbaseline method using higher order moments and strong boosted gradient tree\nclas…
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Alternating Minimization Algorithms for Hybrid Precoding in Millimeter Wave MIMO Systems Open
Millimeter wave (mmWave) communications has been regarded as a key enabling technology for 5G networks, as it offers orders of magnitude greater spectrum than current cellular bands. In contrast to conventional multiple-input-multiple-outp…
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A Survey of Non-Orthogonal Multiple Access for 5G Open
In the 5th generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has be…
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ECAPA-TDNN: Emphasized Channel Attention, Propagation and Aggregation in TDNN Based Speaker Verification Open
Current speaker verification techniques rely on a neural network to extract\nspeaker representations. The successful x-vector architecture is a Time Delay\nNeural Network (TDNN) that applies statistics pooling to project\nvariable-length u…
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Efficient Multi-Scale Attention Module with Cross-Spatial Learning Open
Remarkable effectiveness of the channel or spatial attention mechanisms for producing more discernible feature representation are illustrated in various computer vision tasks. However, modeling the cross-channel relationships with channel …
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DeepSleepNet: A Model for Automatic Sleep Stage Scoring Based on Raw Single-Channel EEG Open
This paper proposes a deep learning model, named DeepSleepNet, for automatic sleep stage scoring based on raw single-channel EEG. Most of the existing methods rely on hand-engineered features, which require prior knowledge of sleep analysi…
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Toward Massive, Ultrareliable, and Low-Latency Wireless Communication With Short Packets Open
Most of the recent advances in the design of highspeed wireless systems are based on information-theoretic principles that demonstrate how to efficiently transmit long data packets. However, the upcoming wireless systems, notably the fifth…
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MERIT Hydro: A High‐Resolution Global Hydrography Map Based on Latest Topography Dataset Open
High‐resolution raster hydrography maps are a fundamental data source for many geoscience applications. Here we introduce MERIT Hydro, a new global flow direction map at 3‐arc sec resolution (~90 m at the equator) derived from the latest e…
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Deep Joint Source-Channel Coding for Wireless Image Transmission Open
We propose a joint source and channel coding (JSCC) technique for wireless image transmission that does not rely on explicit codes for either compression or error correction; instead, it directly maps the image pixel values to the complex-…
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Beyond Massive MIMO: The Potential of Data Transmission With Large Intelligent Surfaces Open
In this paper, we consider the potential of data-transmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a Large Intel…
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Large Intelligent Surface-Assisted Wireless Communication Exploiting Statistical CSI Open
Large intelligent surface (LIS)-assisted wireless communications have drawn attention worldwide. With the use of low-cost LIS on building walls, signals can be reflected by the LIS and sent out along desired directions by controlling its p…
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UCTransNet: Rethinking the Skip Connections in U-Net from a Channel-Wise Perspective with Transformer Open
Most recent semantic segmentation methods adopt a U-Net framework with an encoder-decoder architecture. It is still challenging for U-Net with a simple skip connection scheme to model the global multi-scale context: 1) Not each skip connec…
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Hybrid MIMO Architectures for Millimeter Wave Communications: Phase Shifters or Switches? Open
Hybrid analog/digital multiple-input multiple-output architectures were recently proposed as an alternative for fully digital-precoding in millimeter wave wireless communication systems. This is motivated by the possible reduction in the n…
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Index Modulation Techniques for Next-Generation Wireless Networks Open
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Making Cell-Free Massive MIMO Competitive with MMSE Processing and Centralized Implementation Open
Cell-free Massive MIMO is considered as a promising technology for satisfying the increasing number of users and high rate expectations in beyond-5G networks. The key idea is to let many distributed access points (APs) communicate with all…
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Channel Estimation for Intelligent Reflecting Surface Assisted Multiuser Communications: Framework, Algorithms, and Analysis Open
In intelligent reflecting surface (IRS) assisted communication systems, the acquisition of channel state information is a crucial impediment for achieving the beamforming gain of IRS because of the considerable overhead required for channe…
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Kilosort: realtime spike-sorting for extracellular electrophysiology with hundreds of channels Open
Advances in silicon probe technology mean that in vivo electrophysiological recordings from hundreds of channels will soon become commonplace. To interpret these recordings we need fast, scalable and accurate methods for spike sorting, who…
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Update or Wait: How to Keep Your Data Fresh Open
In this paper, we study how to optimally manage the freshness of infimmation updates sent from a source node to a destination via a channel. A proper metric for data freshness at the destination is the age-of-information, or simply age, wh…
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5G Evolution: A View on 5G Cellular Technology Beyond 3GPP Release 15 Open
The 5G System is being developed and enhanced to provide unparalleled connectivity to connect everyone and everything, everywhere. The first version of the 5G System, based on the Release 15 (“Rel-15”) version of the specifications develop…
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Scalable Cell-Free Massive MIMO Systems Open
Imagine a coverage area with many wireless access points that cooperate to jointly serve the users, instead of creating autonomous cells. Such a cell-free network operation can potentially resolve many of the interference issues that appea…
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Robust and Secure Wireless Communications via Intelligent Reflecting Surfaces Open
In this paper, intelligent reflecting surfaces (IRSs) are employed to enhance the physical layer security in a challenging radio environment. In particular, a multi-antenna access point (AP) has to serve multiple single-antenna legitimate …