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Motivated by exploration of communication-constrained underground environments using robot teams, we study the problem of planning for intermittent connectivity in multi-agent systems. We propose a novel concept of information-consistency…

Robotics · Computer Science 2019-11-21 Filip Klaesson , Petter Nilsson , Aaron D. Ames , Richard M. Murray

Cold interstellar gas clouds provide an exciting new method to discover dark matter. Their immense size makes them uniquely sensitive to interactions from the heaviest, most rarefied dark matter models. Using gas cloud observations, we…

High Energy Physics - Phenomenology · Physics 2021-07-07 Amit Bhoonah , Joseph Bramante , Sarah Schon , Ningqiang Song

Data rates in an interstellar communication network suffer from the inverse square law due to the vast distances between the stars. To achieve high (Gbits/s) data rates, some combination of large apertures and high power is required.…

Instrumentation and Methods for Astrophysics · Physics 2020-09-07 Michael Hippke

Satellite communication systems are the means of realizing a global broadband integrated services digital network. Due to the statistical nature of the integrated services traffic, the resulting rate fluctuations and burstiness render…

Networking and Internet Architecture · Computer Science 2007-05-23 Sonia Fahmy , Raj Jain , Fang Lu , Shivkumar Kalyanaraman

The prospect of mankind returning to the Moon has garnered a great amount of attention in recent years. Dozens of lunar missions are planned for the coming decade which will require the development of a sustainable communication…

Systems and Control · Electrical Eng. & Systems 2022-03-31 Waseem Raza , Ethan Abele , John OHara , Behnaz Sadr , Peter LoPresti , Ali Imran , Wooyeol Choi , Ickhyun Song , Serhat Altunc , Obadiah Kegege , Sabit Ekin

A relentless trend in wireless communications is the hunger for bandwidth, and fresh bandwidth is only to be found at ever-higher frequencies. While 5G systems are seizing the mmWave band, the attention of researchers is shifting already to…

Signal Processing · Electrical Eng. & Systems 2020-08-05 Heedong Do , Sungmin Cho , Jeonghun Park , Ho-Jin Song , Namyoon Lee , Angel Lozano

A secure downlink transmission system which is exposed to multiple eavesdroppers and is appropriate for Internet of Things (IoT) applications is considered. A worst case scenario is assumed, in the sense that, in order to enhance their…

Signal Processing · Electrical Eng. & Systems 2019-05-17 Pingmu Huang , Yunqin Hao , Tiejun Lv , Jintao Xing , Jie Yang , P. Takis Mathiopoulos

A framework is introduced to integrate renewable energy sources (RES) and dynamic pricing capabilities of the smart grid into beamforming designs for coordinated multi-point (CoMP) downlink communication systems. To this end, novel models…

Optimization and Control · Mathematics 2015-06-09 Xin Wang , Yu Zhang , Georgios B. Giannakis , Shuyan Hu

With the rapid development of satellite communication technologies, the space-based access network has been envisioned as a promising complementary part of the future 6G network. Aside from terrestrial base stations, satellite nodes,…

Signal Processing · Electrical Eng. & Systems 2022-07-26 Zhenyu Xiao , Junyi Yang , Tianqi Mao , Chong Xu , Rui Zhang , Zhu Han , Xiang-Gen Xia

We consider the joint design of packet forwarding policies and controllers for wireless control loops where sensor measurements are sent to the controller over an unreliable and energy-constrained multi-hop wireless network. For fixed…

Optimization and Control · Mathematics 2014-07-02 Burak Demirel , Zhenhua Zou , Pablo Soldati , Mikael Johansson

Advancements in satellite technology have made direct-to-device connectivity a viable solution for ensuring global access. This method is designed to provide internet connectivity to remote, rural, or underserved areas where traditional…

Signal Processing · Electrical Eng. & Systems 2024-07-02 Zohre Mashayekh Bakhsh , Yasaman Omid , Gaojie Chen , Farbod Kayhan , Yi Ma , Rahim Tafazolli

A small-cell network with multiple transmitters and unreliable wireless backhaul is considered for secrecy enhancement. The small-cell network is operating under a spectrum sharing agreement with a primary network in a cognitive radio…

Signal Processing · Electrical Eng. & Systems 2021-02-17 Burhan Wafai , Chinmoy Kundu , Ankit Dubey , Jinghua Zhang , Mark F. Flanagan

Millimeter-wave (mmWave) and terahertz (THz) communication systems require large antenna arrays and use narrow directive beams to ensure sufficient receive signal power. However, selecting the optimal beams for these large antenna arrays…

Information Theory · Computer Science 2024-02-23 Shoaib Imran , Gouranga Charan , Ahmed Alkhateeb

This paper considers the beamforming and power optimization problem for a class of integrated sensing and communications (ISAC) problems that utilize the communication signals simultaneously for sensing. We formulate the problem of…

Information Theory · Computer Science 2026-05-15 Kareem M. Attiah , Wei Yu

Rate splitting (RS) is a potentially powerful and flexible technique for multi-antenna downlink transmission. In this paper, we address several technical challenges towards its practical implementation for beyond 5G systems. To this end, we…

Information Theory · Computer Science 2020-02-19 Zheng Li , Chencheng Ye , Ying Cui , Sheng Yang , Shlomo Shamai

The emergence of small satellites and CubeSats for interplanetary exploration will mean hundreds if not thousands of spacecraft exploring every corner of the solar-system. Current methods for communication and tracking of deep space probes…

Radiative capture reactions are one of the main inputs in stellar modelling. In numerous situations, the low energies at which these reactions occur in stars are not accessible with present experimental techniques. Electron screening is one…

Nuclear Theory · Physics 2007-05-23 C. A. Bertulani

In recent wireless networking optical communication is an emerging field. Another novel approach of optical communication using Narrow Line of Sight technique is discussed. Array of trans receivers are placed on the ceiling to communicate…

Networking and Internet Architecture · Computer Science 2013-08-23 Swapan Bhattachrya , Devmalya Banerjee , Abirlal Biswas , Pijush Biswas

The searches for other life and for intelligence are fundamental problems that science faces today. Most searches so far have been focused on radio, but optical laser communication is an alternative, well suited for a ground-based…

Instrumentation and Methods for Astrophysics · Physics 2025-12-23 Valenitn D. Ivanov

Land-based beacons, information laden probes sent into our solar system, and more distal communication nodes have each been proposed as the most likely means by which we might be contacted by ET. Each method, considered in isolation from…

Popular Physics · Physics 2021-06-09 John Gertz