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Radio-frequency (RF) front-end forms a critical part of any radio system, defining its cost as well as communication performance. However, these components frequently exhibit non-ideal behavior, referred to as impairments, due to the…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Mehmet Ali Aygul , Ebubekir Memisoglu , Huseyin Arslan

Radar has long been a common sensor on autonomous vehicles for obstacle ranging and speed estimation. However, as a robust sensor to all-weather conditions, radar's capability has not been well-exploited, compared with camera or LiDAR.…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Yizhou Wang , Gaoang Wang , Hung-Min Hsu , Hui Liu , Jenq-Neng Hwang

This paper discusses the geometrical features and wideband performance of the beam with maximal ratio combining coefficients for a generic multi-antenna receiver. In particular, in case the channel is a linear combination of plane waves, we…

Information Theory · Computer Science 2023-09-07 Andrea Bedin , Andrea Zanella

The objective of this analysis was to simulate the performance of three different ad-hoc protocols for disruption-tolerant networking (DTN) - i.e. the transfer of information through a network of nodes in contexts prone to signal…

Networking and Internet Architecture · Computer Science 2020-09-10 Caitlyn A. K. Singam

Radio maps characterize quantities of interest in radio communication environments, such as the received signal strength and channel attenuation, at every point of a geographical region. Radio map estimation typically entails interpolative…

Signal Processing · Electrical Eng. & Systems 2022-11-23 Daniel Romero , Seung-Jun Kim

We consider a joint radar estimation and communication system using orthogonal time frequency space (OTFS) modulation. The scenario is motivated by vehicular applications where a vehicle equipped with a mono-static radar wishes to…

Information Theory · Computer Science 2019-10-07 Lorenzo Gaudio , Mari Kobayashi , Giuseppe Caire , Giulio Colavolpe

In this paper, we introduce a mathematical framework for analyzing and optimizing multi-operator cellular networks that are allowed to share spectrum licenses and infrastructure elements. The proposed approach exploits stochastic geometry…

Information Theory · Computer Science 2016-08-23 Shanshan Wang , Konstantinos Samdanis , Xavier Costa Perez , Marco Di Renzo

This paper studies the multi-antenna multicast channel with integrated sensing and communication (ISAC), in which a multi-antenna base station (BS) sends common messages to a set of single-antenna communication users (CUs) and…

Information Theory · Computer Science 2022-08-09 Zixiang Ren , Xianxin Song , Yuan Fang , Ling Qiu , Jie Xu

Previous work on cooperative communications has concentrated primarily on the diversity benefits of such techniques. This paper, instead, considers the multiplexing benefits of cooperative communications. First, a new interpretation on the…

Information Theory · Computer Science 2009-03-16 Yijia , Fan , Chao Wang , H. Vincent Poor , John S. Thompson

In this paper, we present a spectrum monitoring framework for the detection of radar signals in spectrum sharing scenarios. The core of our framework is a deep convolutional neural network (CNN) model that enables Measurement Capable…

Networking and Internet Architecture · Computer Science 2017-05-02 Ahmed Selim , Francisco Paisana , Jerome A. Arokkiam , Yi Zhang , Linda Doyle , Luiz A. DaSilva

The question tackled here is the time allocation of radars in a multitarget environment. At a given time radars can only observe a limited part of the space; it is therefore necessary to move their axis with respect to time, in order to be…

Optimization and Control · Mathematics 2009-03-19 Emmanuel Duflos , Marie De Vilmorin , Philippe Vanheeghe

In this paper, we investigate the realization of covert communication in a general radar-communication cooperation system, which includes integrated sensing and communications as a special example. We explore the possibility of utilizing…

Information Theory · Computer Science 2024-01-04 Xinyi Wang , Zesong Fei , Peng Liu , J. Andrew Zhang , Qingqing Wu , Nan Wu

We tackle the problem of exploiting Radar for perception in the context of self-driving as Radar provides complementary information to other sensors such as LiDAR or cameras in the form of Doppler velocity. The main challenges of using…

Computer Vision and Pattern Recognition · Computer Science 2020-07-29 Bin Yang , Runsheng Guo , Ming Liang , Sergio Casas , Raquel Urtasun

In order to evaluate the performance of radar and communication systems in future wireless networks, accurate propagation models are needed to predict efficiently the received powers at each node, and draw correct conclusions. In this…

Signal Processing · Electrical Eng. & Systems 2024-06-05 François De Saint Moulin , Christophe Craeye , Luc Vandendorpe , Claude Oestges

A distributed MIMO radar is considered, in which the transmit and receive antennas belong to nodes of a small scale wireless network. The transmit waveforms could be uncorrelated, or correlated in order to achieve a desirable beampattern.…

Information Theory · Computer Science 2009-07-28 Athina P. Petropulu , Yao Yu , H. Vincent Poor

In this letter, we consider the coexistence and spectrum sharing between downlink multi-user multiple-input-multiple-output (MU-MIMO) communication and a MIMO radar. For a given performance requirement of the downlink communication system,…

Information Theory · Computer Science 2017-07-04 Fan Liu , Christos Masouros , Ang Li , Tharmalingam Ratnarajah

In interference alignment, users sharing a wireless channel are each able to achieve data rates of up to half of the non-interfering channel capacity, no matter the number of users. In an ergodic setting, this is achieved by pairing…

Information Theory · Computer Science 2011-02-21 Joseph C. Koo , William Wu , John Gill

This work addresses the problem of deriving fundamental trade-off bounds for a 1-relay and a 2-relay wireless network when multiple performance criteria are of interest. It proposes a simple MultiObjective (MO) performance evaluation…

Networking and Internet Architecture · Computer Science 2012-11-15 Qi Wang , Katia Jaffrès-Runser , Claire Goursaud , Jean-Marie Gorce

One limiting factor to the performance of mobile ad-hoc networks is the amount of interference that is experienced by each node. In this paper we use the Random Waypoint Mobility Model (RWPM) to represent such a network of mobile devices,…

Networking and Internet Architecture · Computer Science 2017-02-20 Pete Pratt , Carl P. Dettmann , Orestis Georgiou

In this letter, the coexisting success probability and throughput of a wireless network consisting of multiple subnetworks of different radio access technologies (RATs) is investigated. The coexisting success probability that is defined as…

Networking and Internet Architecture · Computer Science 2015-09-14 Xu Ding , Chun-Hung Liu , Li-Chun Wang , Xiaohui Zhao
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