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We consider a single-anchor multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system with imperfectly synchronized transmitter (Tx) and receiver (Rx) clocks, where the Rx estimates its position based on…

We theoretically study the trapping time distribution and the efficiency of the excitation energy transport in dendritic systems. Trapping of excitations, created at the periphery of the dendrimer, on a trap located at its core, is used as…

Materials Science · Physics 2007-05-23 Dirk-Jan Heijs , Victor A. Malyshev , Jasper Knoester

We propose a two-stage algorithm for energy-efficient resource allocation constrained to QoS and physical requirements in OFDM-based EONs. The first stage deals with routing, grooming and traffic ordering and aims at minimizing amplifier…

Information Theory · Computer Science 2017-05-22 Mohammad Hadi , Mohammad Reza Pakravan

Sensor selection is a useful method to help reduce data throughput, as well as computational, power, and hardware requirements, while still maintaining acceptable performance. Although minimizing the Cram\'er-Rao bound has been adopted…

Signal Processing · Electrical Eng. & Systems 2023-08-01 Costas A. Kokke , Mario Coutiño , Laura Anitori , Richard Heusdens , Geert Leus

We consider the optimal packet scheduling problem in a single-user energy harvesting wireless communication system. In this system, both the data packets and the harvested energy are modeled to arrive at the source node randomly. Our goal…

Information Theory · Computer Science 2010-10-08 Jing Yang , Sennur Ulukus

In this paper, a distributed convex optimization problem with swarm tracking behavior is studied for continuous-time multi-agent systems. The agents' task is to drive their center to track an optimal trajectory which minimizes the sum of…

Optimization and Control · Mathematics 2015-07-20 Salar Rahili , Wei Ren , Sheida Ghapani

We consider the joint design of transmit beamforming and receive signal-splitting ratios in the downlink of a wireless network with simultaneous radio-frequency (RF) information and energy transfer. Under constraints on the…

Information Theory · Computer Science 2017-10-13 Ali A. Nasir , Hoang D. Tuan , Duy T. Ngo , Salman Durrani , Dong In Kim

Consider a polynomial optimisation problem, whose instances vary continuously over time. We propose to use a coordinate-descent algorithm for solving such time-varying optimisation problems. In particular, we focus on relaxations of…

Optimization and Control · Mathematics 2019-09-24 Jie Liu , Jakub Marecek , Andrea Simonetto , Martin Takac

This paper considers target tracking based on a beacon signal's time-difference-of-arrival (TDOA) to a group of cooperating sensors. The sensors receive a reflected signal from the target where the time-of-arrival (TOA) renders the distance…

Systems and Control · Electrical Eng. & Systems 2024-12-24 Mohammadreza Doostmohammadian , Themistoklis Charalambous

This paper addresses the synthesis of slow-time coded waveforms for single target tracking in a radar network operating under colored Gaussian interference. Based on the Posterior Cram\'er Rao Lower Bound (PCRLB), which characterizes the…

Signal Processing · Electrical Eng. & Systems 2025-12-08 Tao Fan , Augusto Aubry , Antonio De Maio , Luca Pallotta , Xianxiang Yu , Guolong Cui

Motivated by damage due to heating in sensor operation, we consider the throughput optimal offline data scheduling problem in an energy harvesting transmitter such that the resulting temperature increase remains below a critical level. We…

Information Theory · Computer Science 2016-11-18 Omur Ozel , Sennur Ulukus , Pulkit Grover

This paper investigates the energy efficiency optimization for movable antenna (MA) systems by considering the time delay and energy consumption introduced by MA movement. We first derive the upper bound on energy efficiency for a…

Information Theory · Computer Science 2025-08-21 Jingze Ding , Zijian Zhou , Yuping Zhao , Bingli Jiao

Location-aware networks are of great importance and interest in both civil and military applications. This paper determines the localization accuracy of an agent, which is equipped with an antenna array and localizes itself using wireless…

Information Theory · Computer Science 2016-11-17 Yanjun Han , Yuan Shen , Xiao-Ping Zhang , Moe Z. Win , Huadong Meng

Spectrum sensing is a fundamental operation in cognitive radio environment. It gives information about spectrum availability by scanning the bands. Usually a fixed amount of time is given to scan individual bands. Most of the times,…

Information Theory · Computer Science 2016-06-10 Garimella Rama Murthy , Rhishi Pratap Singh , Samdarshi Abhijeet , Sachin Chaudhary

In this paper we consider wireless energy transfer for a point-to-point link. The energy transmitter sees a finite number of independent channel realizations, and, armed with (causal) knowledge of the channels, must decide how much energy…

Signal Processing · Electrical Eng. & Systems 2019-02-08 Amanthi Thudugalage , Saman Atapattu , Jamie Evans

We consider the delay minimization problem in an energy harvesting communication network with energy cooperation. In this network, nodes harvest energy from nature for use in data transmission, and may transfer a portion of their harvested…

Information Theory · Computer Science 2016-11-17 Berk Gurakan , Omur Ozel , Sennur Ulukus

In this paper, we propose a new beam allocation strategy aiming to maximize the average successful tracking probability (ASTP) of time-varying millimeter-wave MIMO systems. In contrast to most existing works that employ one…

Signal Processing · Electrical Eng. & Systems 2019-07-02 Deyou Zhang , Ang Li , He Chen , Ning Wei , Ming Ding , Yonghui Li , Branka Vucetic

Future 6G networks are expected to empower communication systems by integrating sensing capabilities, resulting in integrated sensing and communication (ISAC) systems. However, this integration may exacerbate the data traffic congestion in…

Signal Processing · Electrical Eng. & Systems 2024-12-31 Lu Wang , Luis F. Abanto-Leon

We study wireless power transmission by an energy source to multiple energy harvesting nodes with the aim to maximize the energy efficiency. The source transmits energy to the nodes using one of the available power levels in each time slot…

Signal Processing · Electrical Eng. & Systems 2021-01-01 Debamita Ghosh , Manjesh K. Hanawal , Nikola Zlatanov

In this paper, the proportionally fair allocation of time slots in a frame, as well as power level to multiple receivers in an energy harvesting broadcast system, is considered. Energy harvest times in a frame are assumed to be known at the…

Networking and Internet Architecture · Computer Science 2015-03-20 Neyre Tekbiyik , Tolga Girici , Elif Uysal-Biyikoglu , Kemal Leblebicioglu