Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of GothenburgSE951 papers
- Centre National de la Recherche ScientifiqueFR805 papers
- Leiden UniversityNL590 papers
- Max Planck Institute for Radio AstronomyDE405 papers
- European Southern ObservatoryCL356 papers
- Center for Astrophysics Harvard & SmithsonianUS313 papers
- Leiden Observatory304 papers
- California Institute of TechnologyUS296 papers
- National Astronomical Observatory of JapanJP280 papers
- Observatoire de ParisFR268 papers
- Stockholm UniversitySE262 papers
- Centro de AstrobiologíaES252 papers
242 papers · 1 filter
On the Capacity of Correlated Phase-Noise Channels: An Electro-Optic Frequency Comb Example
Mohammad Farsi, Hamdi Joudeh, Gabriele Liga +3
The capacity of a discrete-time channel with correlated phase noises is investigated. In particular, the electro-optic frequency comb system is considered, where the phase noise of…
Low-Density Parity-Check Codes and Spatial Coupling for Quantitative Group Testing
Mgeni Makambi Mashauri, Alexandre Graell i Amat, Michael Lentmaier
A non-adaptive quantitative group testing (GT) scheme based on sparse codes-on-graphs in combination with low-complexity peeling decoding was introduced and analyzed by Karimi et a…
Robust Performance Over Changing Intersymbol Interference Channels by Spatial Coupling
Mgeni Makambi Mashauri, Alexandre Graell i Amat, Michael Lentmaier
We show that spatially coupled low-density parity-check (LDPC) codes yield robust performance over changing intersymbol interfere (ISI) channels with optimal and suboptimal detecto…
On the Universality of Spatially Coupled LDPC Codes Over Intersymbol Interference Channels
Mgeni Makambi Mashauri, Alexandre Graell i Amat, Michael Lentmaier
In this paper, we derive the exact input/output transfer functions of the optimal a-posteriori probability channel detector for a general ISI channel with erasures. Considering thr…
Integrated Communications and Localization for Massive MIMO LEO Satellite Systems
Li You, Xiaoyu Qiang, Yongxiang Zhu +6
Integrated communications and localization (ICAL) will play an important part in future sixth generation (6G) networks for the realization of Internet of Everything (IoE) to suppor…
Full-Duplex Millimeter Wave MIMO Channel Estimation: A Neural Network Approach
Mehdi Sattari, Hao Guo, Deniz Gündüz +2
Millimeter wave (mmWave) multiple-input-multi-output (MIMO) is now a reality with great potential for further improvement. We study full-duplex transmissions as an effective way to…
Optimization and Identification of Lattice Quantizers
Erik Agrell, Daniel Pook-Kolb, Bruce Allen
Lattices with minimal normalized second moments are designed using a new numerical optimization algorithm. Starting from a random lower-triangular generator matrix and applying sto…
Wireless 6G Connectivity for Massive Number of Devices and Critical Services
Anders E. Kalør, Giuseppe Durisi, Sinem Coleri +4
Compared to the generations up to 4G, whose main focus was on broadband and coverage aspects, 5G has expanded the scope of wireless cellular systems towards embracing two new types…
Glued lattices are better quantizers than
Erik Agrell, Daniel Pook-Kolb, Bruce Allen
40 years ago, Conway and Sloane proposed using the highly symmetrical Coxeter-Todd lattice for quantization, and estimated its second moment. Since then, all published lis…
Soft-Information Post-Processing for Chase-Pyndiah Decoding Based on Generalized Mutual Information
Andreas Straßhofer, Diego Lentner, Gianluigi Liva +1
Chase-Pyndiah decoding is widely used for decoding product codes. However, this method is suboptimal and requires scaling the soft information exchanged during the iterative proces…
The Voronoi Region of the Barnes-Wall Lattice
Daniel Pook-Kolb, Erik Agrell, Bruce Allen
We give a detailed description of the Voronoi region of the Barnes-Wall lattice , including its vertices, relevant vectors, and symmetry group. The exact value of its quant…
End-to-End Learning for VCSEL-based Optical Interconnects: State-of-the-Art, Challenges, and Opportunities
Muralikrishnan Srinivasan, Jinxiang Song, Alexander Grabowski +8
Optical interconnects (OIs) based on vertical-cavity surface-emitting lasers (VCSELs) are the main workhorse within data centers, supercomputers, and even vehicles, providing low-c…
Multistatic Sensing of Passive Targets Using 6G Cellular Infrastructure
Vijaya Yajnanarayana, Henk Wymeersch
Sensing using cellular infrastructure may be one of the defining feature of sixth generation (6G) wireless systems. Wideband 6G communication channels operating at higher frequency…
Efficient evaluation of the error probability for pilot-assisted URLLC with Massive MIMO
A. Oguz Kislal, Alejandro Lancho, Giuseppe Durisi +1
We propose a numerically efficient method for evaluating the random-coding union bound with parameter on the error probability achievable in the finite-blocklength regime by a…
Exact calculation of quantizer constants for arbitrary lattices
Daniel Pook-Kolb, Bruce Allen, Erik Agrell
We present an algorithm for the exact computer-aided construction of the Voronoi cells of lattices with known symmetry group. Our algorithm scales better than linearly with the tot…
Integrated Access and Backhaul in Cell-free Massive MIMO Systems
Ali Hosseinalipour Jazi, S. Mohammad Razavizadeh, Tommy Svensson
One of the major challenges with cell-free (CF) massive multiple-input multiple-output (MIMO) networks is providing backhaul links for a large number of distributed access points (…
Cell-Free Massive MIMO for URLLC: A Finite-Blocklength Analysis
Alejandro Lancho, Giuseppe Durisi, Luca Sanguinetti
We present a general framework for the characterization of the packet error probability achievable in cell-free Massive multiple-input multiple output (MIMO) architectures deployed…
Data-Driven Estimation of Capacity Upper Bounds
Christian Häger, Erik Agrell
We consider the problem of estimating an upper bound on the capacity of a memoryless channel with unknown channel law and continuous output alphabet. A novel data-driven algorithm…
On the best lattice quantizers
Erik Agrell, Bruce Allen
A lattice quantizer approximates an arbitrary real-valued source vector with a vector taken from a specific discrete lattice. The quantization error is the difference between the s…
Capacity Bounds under Imperfect Polarization Tracking
Mohammad Farsi, Magnus Karlsson, Erik Agrell
In optical fiber communication, due to the random variation of the environment, the state of polarization (SOP) fluctuates randomly with time leading to distortion and performance…
Velocity-aware Antenna Selection in Predictor Antenna Systems
Hao Guo, Behrooz Makki, Tommy Svensson
Moving relay (MR), which is a candidate solution for supporting in-vehicle users, has been investigated in different studies. Due to the mobile nature of the MR, acquiring channel…
Low-complexity Voronoi shaping for the Gaussian channel
S. Li, A. Mirani, M. Karlsson +1
Voronoi constellations (VCs) are finite sets of vectors of a coding lattice enclosed by the translated Voronoi region of a shaping lattice, which is a sublattice of the coding latt…
Hierarchical sparse recovery from hierarchically structured measurements with application to massive random access
Benedikt Groß, Axel Flinth, Ingo Roth +2
A new family of operators, coined hierarchical measurement operators, is introduced and discussed within the well-known hierarchical sparse recovery framework. Such operator is a c…
On Doped SC-LDPC Codes for Streaming
Roman Sokolovskii, Alexandre Graell i Amat, Fredrik Brännström
In streaming applications, doping improves the performance of spatially-coupled low-density parity-check (SC-LDPC) codes by creating reduced-degree check nodes in the coupled chain…