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Massive multi-input multi-output (MIMO) can support high spectral efficiency (SE) with simple linear transceivers, and is expected to provide high energy efficiency (EE). In this paper, we analyze the EE of downlink multi-cell massive MIMO…

Information Theory · Computer Science 2015-05-28 Wenjia Liu , Shengqian Han , Chenyang Yang

Many recent activities of IEEE 802.11 Working group have been focused on improving power efficiency of Wi-Fi to make it favorable for massive Internet of Things scenarios, in which swarms of battery supplied sensors rarely communicate with…

Networking and Internet Architecture · Computer Science 2019-09-04 Dmitry Bankov , Evgeny Khorov , Andrey Lyakhov , Ekaterina Stepanova

Excitonic models of light-harvesting complexes, where the vibrational degrees of freedom are treated as a bath, are commonly used to describe the motion of the electronic excitation through a molecule. Recent experiments point toward the…

Quantum Physics · Physics 2011-07-19 Christoph Kreisbeck , Tobias Kramer , Mirta Rodriguez , Birgit Hein

We investigate an approach that uses low-level analysis and the execution-cache-memory (ECM) performance model in combination with tuning of hardware parameters to lower energy requirements of memory-bound applications. The ECM model is…

Performance · Computer Science 2016-09-13 Johannes Hofmann , Dietmar Fey

IEEE 802.11 is a widely used wireless LAN standard for medium access control. TCP is a prominent transport protocol originally designed for wired networks. TCP treats packet loss as congestion and reduces the data rate. In wireless networks…

Networking and Internet Architecture · Computer Science 2012-02-28 P. Chenna Reddy

We consider an energy minimization problem for cooperative LTE networks. To reduce energy consumption, we investigate how to jointly optimize the transmit power and the association between cells and user equipments (UEs), by taking into…

Information Theory · Computer Science 2017-06-23 Lei You , Lei Lei , Di Yuan

With the increasing physical event rate and number of electronic channels, traditional readout scheme meets the challenge of improving readout speed caused by the limited bandwidth of crate backplane. In this paper, a high-speed data…

Instrumentation and Detectors · Physics 2014-10-23 Huang Xi-Ru , Cao Ping , Gao Li-Wei , Zheng Jia-Jun

Traditional wisdom for network management allocates network resources separately for the measurement and communication tasks. Heavy measurement tasks may compete limited resources with communication tasks and significantly degrade overall…

Networking and Internet Architecture · Computer Science 2024-08-23 Haifeng Jia , Yichen Wei , Yibo Pi , Cailian Chen

This paper describes two research projects that develop new low-cost techniques for testing devices with multiple high-speed (2 to 5 Gbps) signals. Each project uses commercially available components to keep costs low, yet achieves…

Hardware Architecture · Computer Science 2011-11-09 D. C. Keezer , C. Gray , A. Majid , N. Taher

In this paper, energy efficient power control for the uplink two-tier networks where a macrocell tier with a massive multiple-input multiple-output (MIMO) base station is overlaid with a small cell tier is investigated. We propose a…

Networking and Internet Architecture · Computer Science 2017-03-23 Ningning Lu , Yanxiang Jiang , Fuchun Zheng , Xiaohu You

The optimum off-line energy management scheme for multi-user multi-relay networks employing energy harvesting and wireless energy transfer is studied. Specifically, the users are capable of harvesting and transferring energy to each other…

Information Theory · Computer Science 2016-09-28 Nan Qi , Ming Xiao , Theodoros A. Tsiftsis , Mikael Skoglund , Huisheng Zhang

The aim of this paper is to enhance the quality of Orthogonal Frequency Division Multiplexing OFDM estimation in dedicated vehicular communication transmission V2X networks. Wireless Access in Vehicular Environment WAVE as also known IEEE…

Networking and Internet Architecture · Computer Science 2014-06-24 Aymen Sassi , Faiza Charfi , Lotfi Kamoun , Yassin Elhillali , Atika Rivenq

Energy harvesting (EH) combined with cooperative communications constitutes a promising solution for future wireless technologies. They enable additional efficiency and increased lifetime to wireless networks. This paper investigates a…

Networking and Internet Architecture · Computer Science 2018-04-11 Ahmad Alsharoa , Hakim Ghazzai , Ahmed E Kamal , Abdullah Kadri

The problem of minimizing the total power consumption while satisfying different quality-of-service (QoS) requirements in a two-hop multiple-input multiple-output network with a single non-regenerative relay is considered. As shown by Y.…

Information Theory · Computer Science 2013-03-13 Luca Sanguinetti , Antonio A. D'Amico

The reliable distribution of high-dimensional entangled quantum states, an important resource in quantum technologies, through optical fibre networks is challenging due to the need to maintain coherence across multiple modes. Here we…

To coordinate the economy, security and environment protection in the power system operation, a two-step many-objective optimal power flow (MaOPF) solution method is proposed. In step 1, it is the first time that knee point-driven…

Optimization and Control · Mathematics 2018-12-05 Yahui Li , Yang Li

We consider a cooperative wireless network in the presence of one of more eavesdroppers, and exploit node cooperation for achieving physical (PHY) layer based security. Two different cooperation schemes are considered. In the first scheme,…

Information Theory · Computer Science 2015-05-14 Jiangyuan Li , Athina P. Petropulu , Steven Weber

RadioWeaves network operates a large number of distributed antennas using cell-free architecture to provide high data rates and support a large number of users. Operating this network in an energy-efficient manner in the limited available…

Information Theory · Computer Science 2022-08-10 Zakir Hussain Shaik , Rimalapudi Sarvendranath , Erik G. Larsson

Compute-and-forward (CF) is a relaying strategy which allows the relay to decode a linear combination of the transmitted messages. This work studies the optimal power allocation problem for the CF scheme in fast fading channels for…

Information Theory · Computer Science 2024-11-18 Lanwei Zhang , Jamie Evans , Jingge Zhu

Most existing works on physical-layer (PHY) cooperation (beyond routing) focus on how to best use a given, static relay network--while wireless networks are anything but static. In this paper, we pose a different set of questions: given…

Networking and Internet Architecture · Computer Science 2016-12-08 Ayan Sengupta , Yahya H. Ezzeldin , Siddhartha Brahma , Christina Fragouli , Suhas Diggavi