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The one-bit spatial Sigma-Delta concept has recently been proposed as an approach for achieving low distortion and low power consumption for massive multi-input multi-output systems. The approach exploits users located in known angular…

信息论 · 计算机科学 2020-07-14 Hessam Pirzadeh , Gonzalo Seco-Granados , A. Lee Swindlehurst , Josef A. Nossek

In this chapter, we show how the use of differential coding and the presence of phase slips in the transmission channel affect the total achievable information rates and capacity of a system. By means of the commonly used QPSK modulation,…

信息论 · 计算机科学 2017-04-18 Laurent Schmalen , Stephan ten Brink , Andreas Leven

This paper studies spatial capacity in a stochastic wireless ad hoc network, where multi-stage probing and data transmission are sequentially performed. We propose a novel signal-to-interference-ratio (SIR) threshold based scheduling…

信息论 · 计算机科学 2014-09-10 Yue Ling Che , Rui Zhang , Yi Gong , Lingjie Duan

In this paper, we propose a spatial coded modulation (SCM) scheme, which improves the accuracy of the active antenna detection by coding over the transmit antennas. Specifically, the antenna activation pattern in the SCM corresponds to a…

信息论 · 计算机科学 2023-09-21 Junshan Luo , Fanggang Wang , Shilian Wang

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 three channel impulse responses of different memory as an…

信息论 · 计算机科学 2024-04-17 Mgeni Makambi Mashauri , Alexandre Graell i Amat , Michael Lentmaier

Online Conformal Prediction (CP) struggles to balance temporal adaptability and structural stability. Feedback-driven methods (e.g., Adaptive Conformal Inference (ACI)) suffer from systemic marginal under-coverage and high interval variance…

机器学习 · 计算机科学 2026-05-04 Yu-Hsueh Fang , Chia-Yen Lee

The excellent performance of convolutional low-density parity-check codes is the result of the spatial coupling of individual underlying codes across a window of growing size, but much smaller than the length of the individual codes.…

信息论 · 计算机科学 2011-05-05 S. Hamed Hassani , Nicolas Macris , Ruediger Urbanke

Stacked intelligent metasurfaces (SIMs) have recently gained significant interest since they enable precoding in the wave domain that comes with increased processing capability and reduced energy consumption. The study of SIMs and high…

Recent massive numerical simulations have shown that the response of a "stochastic resonator" is enhanced as a consequence of spatial coupling. Similar results have been analytically obtained in a reaction-diffusion model, using…

统计力学 · 物理学 2015-11-30 B. von Haeften , R. Deza , H. S. Wio

A circulant-based spatially-coupled (SC) code is constructed by partitioning the circulants of an underlying block code into a number of components, and then coupling copies of these components together. By connecting (coupling) several SC…

信息论 · 计算机科学 2018-09-14 Homa Esfahanizadeh , Ahmed Hareedy , Lara Dolecek

This paper presents a novel parametric scattering model (PSM) for sensing extended targets in integrated sensing and communication (ISAC) systems. The PSM addresses the limitations of traditional models by efficiently capturing the target's…

信号处理 · 电气工程与系统科学 2024-11-04 Rang Liu , A. Lee Swindlehurst , Ming Li

Sparse Regression Codes (SPARCs) are capacity-achieving codes introduced for communication over the Additive White Gaussian Noise (AWGN) channels and were later extended to general memoryless channels. In particular it was shown via…

信息论 · 计算机科学 2024-09-10 Yuhao Liu , Yizhou Xu , Tianqi Hou

This letter presents a comprehensive framework analyzing the asymptotic error performance of a multiple-input-multiple-output (MIMO) wireless system employing spatial modulation (SM) with maximum likelihood detection and perfect channel…

信息论 · 计算机科学 2014-06-02 Kostas P. Peppas , Martin Zamkotsian , Fotis Lazarakis , Panayotis G. Cottis

Spatially coupled codes have been shown to universally achieve the capacity for a large class of channels. Many variants of such codes have been introduced to date. We discuss a further such variant that is particularly simple and is…

信息论 · 计算机科学 2019-12-09 Dimitris Achlioptas , Hamed Hassani , Wei Liu , Rüdiger Urbanke

We consider the dynamics of belief propagation decoding of spatially coupled Low-Density Parity-Check codes. It has been conjectured that after a short transient phase, the profile of "error probabilities" along the spatial direction of a…

信息论 · 计算机科学 2017-01-16 Rafah El-Khatib , Nicolas Macris

In this work, we study integrated sensing and communication (ISAC) networks intending to effectively balance sensing and communication (S&C) performance at the network level. Through the simultaneous utilization of multi-point (CoMP)…

信息论 · 计算机科学 2024-06-12 Kaitao Meng , Christos Masouros

Direct satellite uplink is severely constrained by limited link budgets, which hinder the exploitation of wideband resources, and ultimately limit the throughout. This paper presents a pilot-less coded modulation scheme based on sparse…

信息论 · 计算机科学 2026-04-23 Alberto G. Perotti , Branislav M. Popovic , Renaud-Alexandre Pitaval

Convolutional low-density parity-check (LDPC) codes (or spatially-coupled codes) have now been shown to achieve capacity on binary-input memoryless symmetric channels. The principle behind this surprising result is the threshold-saturation…

信息论 · 计算机科学 2013-01-25 Arvind Yedla , Yung-Yih Jian , Phong S. Nguyen , Henry D. Pfister

Beam-space MIMO has recently been proposed as a promising solution to enable transmitting multiple data streams using a single RF chain and a single pattern-reconfigurable antenna. Since in a beam-space MIMO system radiation pattern of the…

信息论 · 计算机科学 2016-08-03 Mohsen Yousefbeiki , Juan R. Mosig , Andreas P. Burg

In this paper we investigate the effect of spatial coupling applied to the recently-proposed coded slotted ALOHA (CSA) random access protocol. Thanks to the bridge between the graphical model describing the iterative interference…

信息论 · 计算机科学 2016-11-17 Gianluigi Liva , Enrico Paolini , Michael Lentmaier , Marco Chiani