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We investigate how a single resonator with a time-modulated component extracts power from an external ambient source. However, the collected power is largely dependent on the precise choice of the modulation signal frequency. We focus on…

应用物理 · 物理学 2023-03-21 Alireza Nikzamir , Kasra Rouhi , Alexander Figotin , Filippo Capolino

Energy detector (ED) is a popular choice for distributed cooperative spectrum sensing because it does not need to be cognizant of the primary user (PU) signal characteristics. However, the conventional ED-based sensing usually requires…

系统与控制 · 电气工程与系统科学 2024-09-23 Mohammed Rashid , Jeffrey A. Nanzer

Energy Efficiency (EE) is of high importance while considering Massive Multiple-Input Multiple-Output (M-MIMO) networks where base stations (BSs) are equipped with an antenna array composed of up to hundreds of elements. M-MIMO…

信号处理 · 电气工程与系统科学 2021-03-23 Marcin Hoffmann , Pawel Kryszkiewicz , Adrian Kliks

In this paper, we consider the downlink of a massive multiple-input-multiple-output (MIMO) single user transmission system operating in the millimeter wave outdoor narrowband channel environment. We propose a novel receive spatial…

信息论 · 计算机科学 2018-03-23 Ahmed Raafat , Adrian Agustin , Josep Vidal

Energy harvesting (EH) based communication has raised great research interests due to its wide application and the feasibility of commercialization. In this paper, we consider wireless communications with EH constraints at the transmitter.…

信息论 · 计算机科学 2016-06-16 Hang Li , Chuan Huang , Fuad Alsaadi , Shuguang Cui

This book chapter reviews signal detection and parameter estimation techniques for multiuser multiple-antenna wireless systems with a very large number of antennas, known as massive multi-input multi-output (MIMO) systems. We consider both…

信息论 · 计算机科学 2014-08-22 R. C. de Lamare , R. Sampaio Neto

A metric called exponentially-weighted energy dispersion index (EEDI) is proposed to explain the blocklength-dependent effective signal-to-noise ratio (SNR) in probabilistically shaped fiber-optic systems. EEDI is better than energy…

信号处理 · 电气工程与系统科学 2021-06-10 Kaiquan Wu , Gabriele Liga , Yunus Can Gültekin , Alex Alvarado

Distribution system state estimation (DSSE) is an essential tool for operation of distribution networks, the results of which enables the operator to have a thorough observation of the system. Thus, most distribution management systems…

系统与控制 · 计算机科学 2015-04-15 Vahid Rasouli Disfani , Mohammad Chehreghani Bozchalui , Ratnesh Sharma

Receivers with joint channel estimation and signal detection using superimposed pilots (SP) can achieve high transmission efficiency in orthogonal time frequency space (OTFS) systems. However, existing receivers have high computational…

信息论 · 计算机科学 2024-04-16 Fupeng Huang , Qinghua Guo , Youwen Zhang , Yuriy Zakharov

In this paper, we propose a novel algorithm to optimize the energy-efficiency (EE) of orthogonal frequency division multiplexing-based cognitive radio systems under channel uncertainties. We formulate an optimization problem that guarantees…

信号处理 · 电气工程与系统科学 2019-02-11 Ebrahim Bedeer , Osama Amin , Octavia A. Dobre , Mohamed H. Ahmed , Kareem E. Baddour

Next-generation high-speed passive optical network (HS-PON) transceivers supporting 25, 50 and 100 Gb/s are under the early stage of their standardization process. One key aspect of this process is the choice of the best modulation format.…

信号处理 · 电气工程与系统科学 2019-04-15 Pablo Torres-Ferrera , Valter Ferrero , Maurizio Valvo , Roberto Gaudino

User electromagnetic (EM) exposure is continuously being exacerbated by the evolution of multi-antenna portable devices. To mitigate the effects of EM radiation, portable devices must satisfy tight regulations on user exposure level,…

信息论 · 计算机科学 2021-07-27 Jiayuan Xiong , Li You , Derrick Wing Kwan Ng , Wenjin Wang , Xiqi Gao

Energy detection process for enabling opportunistic spectrum access in dynamic primary user (PU) scenarios, where PU changes state from active to inactive at random time instances, requires estimation of several parameters ranging from…

信息论 · 计算机科学 2020-03-23 Jakub Nikonowicz , Aamir Mahmood , Mikael Gidlund

Nonlinear energy harvesters (EH) behave differently depending on the range of their input power. In the literature, different models have been proposed mainly for relatively small and large input power regimes of an EH. Due to the…

信息论 · 计算机科学 2019-09-02 Morteza Varasteh , Jakob Hoydis , Bruno Clerckx

As a green and secure wireless transmission way, secure spatial modulation (SM) is becoming a hot research area. Its basic idea is to exploit both the index of activated transmit antenna and amplitude phase modulation (APM) signal to carry…

信号处理 · 电气工程与系统科学 2019-07-05 Feng Shu , Lin Liu , Yumeng Zhang , Guiyang Xia , Xiaoyu Liu , Jun Li , Shi Jin , Jiangzhou Wang

The combination of energy harvesting and large-scale multiple antenna technologies provides a promising solution for improving the energy efficiency (EE) by exploiting renewable energy sources and reducing the transmission power per user…

信息论 · 计算机科学 2016-11-17 Zhenyu Zhou , Sheng Zhou , Jie Gong , Zhisheng Niu

This paper considers a Fluid Antenna (FA) system comprising a single-antenna transmitter that communicates with a receiver equipped with an FA array with $N$ ports. The transmitter is assumed to deploy any of the modulation schemes:…

信号处理 · 电气工程与系统科学 2026-04-09 Soumya P. Dash , George C. Alexandropoulos

The problems of energy harvesting in wireless com- munication systems have recently drawn much attention. In this paper, we focus on the investigation of energy harvesting maximization (EHM) in the important secrecy multi-input multi-…

信息论 · 计算机科学 2016-01-15 Wei Wu , Xueqi Zhang , Baoyun Wang

This paper investigates the fundamental limits on the target detection performance with a dual-function multiple-input-multiple-output (MIMO) radar communication (RadCom) systems. By assuming the presence of a point-like target and a…

信息论 · 计算机科学 2022-04-12 Bo Tang , Zhongrui Huang , Lilong Qin , Hai Wang

We analyze the symbol error probability (SEP) of $M$-ary pulse amplitude modulation ($M$-PAM) receivers equipped with optimal low-resolution quantizers. We first show that the optimum detector can be reduced to a simple decision rule. Using…

信号处理 · 电气工程与系统科学 2021-08-06 Neil Irwin Bernardo , Jingge Zhu , Jamie Evans