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- research-articleOctober 2023
GreenMO: Enabling Virtualized, Sustainable Massive MIMO with a Single RF Chain
ACM MobiCom '23: Proceedings of the 29th Annual International Conference on Mobile Computing and NetworkingArticle No.: 39, Pages 1–17https://doi.org/10.1145/3570361.3592509With the turn of new decade, wireless communications face a major challenge on connecting many more new users and devices, at the same time being energy efficient and minimizing its carbon footprint. However, the current approaches to address the ...
- research-articleApril 2016
A traffic load balancing framework for software-defined radio access networks powered by hybrid energy sources
IEEE/ACM Transactions on Networking (TON), Volume 24, Issue 2Pages 1038–1051https://doi.org/10.1109/TNET.2015.2404576Dramatic mobile data traffic growth has spurred a dense deployment of small cell base stations (SCBSs). Small cells enhance the spectrum efficiency and thus enlarge the capacity of mobile networks. Although SCBSs consume much less power than macro BSs (...
- research-articleDecember 2015
Fairness-Aware Energy-Efficient Resource Allocation for AF Co-Operative OFDMA Networks
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 12Pages 2478–2493https://doi.org/10.1109/JSAC.2015.2481207In this paper, we adopt an energy-efficiency (EE) metric, named worst-EE, that is suitable for EE fairness optimization in the uplink transmission of amplify-and-forward (AF) cooperative orthogonal frequency division multiple access (OFDMA) networks. More ...
- research-articleSeptember 2015
Energy‐efficient transmission for decode‐and‐forward dual‐hop networks with asymmetric traffic demands
IET Communications (CMU2), Volume 9, Issue 14Pages 1781–1787https://doi.org/10.1049/iet-com.2014.1089Two‐way relaying systems efficiently accomplish transmissions in both directions within dual‐hop, hence, two time slots can be saved compared with one‐way relaying. However, the conventional two‐way relaying protocol requires the assumption of symmetric ...
- research-articleAugust 2015
Resource Allocation for Energy-Efficient 3-Way Relay Channels
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 8Pages 4454–4468https://doi.org/10.1109/TWC.2015.2421496Throughput and energy efficiency in 3-way relay channels are studied in this paper. Unlike previous contributions, we consider a circular message exchange. First, an outer bound and achievable sum rate expressions for different relaying protocols are ...
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- research-articleAugust 2015
Maximizing Energy Efficiency in Multiple Access Channels by Exploiting Packet Dropping and Transmitter Buffering
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 8Pages 4129–4141https://doi.org/10.1109/TWC.2015.2417151Quality of service (QoS) for a network is characterized in terms of various parameters specifying packet delay and loss tolerance requirements for the application. The unpredictable nature of the wireless channel demands for application of certain ...
- research-articleAugust 2015
The Price of Self-Sustainability for Block Transmission Systems
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 8Pages 1549–1562https://doi.org/10.1109/JSAC.2015.2391752In this work, the self-sustainability of block transmission systems is analyzed. In particular, orthogonal frequency division multiple access (OFDMA) is taken as a reference, due to its popularity and rather simple signal model. More precisely, a ...
- research-articleJuly 2015
A Survey on Green Mobile Networking: From The Perspectives of Network Operators and Mobile Users
IEEE Communications Surveys & Tutorials (IEEE_ICST), Volume 17, Issue 3Pages 1535–1556https://doi.org/10.1109/COMST.2014.2367592Efficient usage of energy in wireless networks represents a major concern in academia and industry, mainly because of environmental, financial, and quality-of-experience considerations. Various solutions have been proposed to enable efficient energy usage ...
- research-articleMay 2015
Joint Relay Scheduling, Channel Access, and Power Allocation for Green Cognitive Radio Communications
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 5Pages 922–932https://doi.org/10.1109/JSAC.2014.2361085The capacity of cognitive radio (CR) systems can be enhanced significantly by deploying relay nodes to exploit the spatial diversity. However, the inevitable imperfect sensing in CR has vital effects on the policy of relay selection, channel access, and ...
- articleApril 2015
On the impact of D2D traffic offloading on energy efficiency in green LTE-A HetNets
Wireless Communications & Mobile Computing (WCMC), Volume 15, Issue 6Pages 1089–1105https://doi.org/10.1002/wcm.2512In this paper, the interplay between cooperative device-to-device D2D communications and green cellular communications in the long term evolution LTE and LTE-advanced LTE-A cellular systems is investigated. An efficient approach for grouping mobile ...
- research-articleJanuary 2015
A Survey on Power-Amplifier-Centric Techniques for Spectrum- and Energy-Efficient Wireless Communications
IEEE Communications Surveys & Tutorials (IEEE_ICST), Volume 17, Issue 1Pages 315–333https://doi.org/10.1109/COMST.2014.2350018In this paper, we provide a survey on techniques to improve the spectrum and energy efficiency of wireless communication systems. Recognizing the fact that power amplifier (PA) is one of the most critical components in wireless communication systems and ...
- research-articleJanuary 2015
Energy-Efficient Information and Communication Infrastructures in the Smart Grid: A Survey on Interactions and Open Issues
IEEE Communications Surveys & Tutorials (IEEE_ICST), Volume 17, Issue 1Pages 179–197https://doi.org/10.1109/COMST.2014.2341600Smart grid has modernized the way electricity is generated, transported, distributed, and consumed by integrating advanced sensing, communications, and control in the day-to-day operation of the grid. Electricity is a core utility for the functioning of ...
- review-articleDecember 2014
Strategic bargaining in wireless networks: basics, opportunities and challenges
IET Communications (CMU2), Volume 8, Issue 18Pages 3435–3450https://doi.org/10.1049/iet-com.2014.0399Strategic bargaining cooperative games have found extensive applications to resource management in wireless networks. In this survey, basics of a strategic bargaining game and solution concepts are firstly presented. Geometrical interpretations are ...
- articleJune 2014
Energy efficiency in TDMA-based next-generation passive optical access networks
IEEE/ACM Transactions on Networking (TON), Volume 22, Issue 3Pages 850–863https://doi.org/10.1109/TNET.2013.2259596Next-generation passive optical network (PON) has been considered in the past few years as a cost-effective broadband access technology. With the ever-increasing power saving concern, energy efficiency has been an important issue in its operations. In ...
- posterOctober 2012
Cooperative wireless sensor networks for green internet of things
Q2SWinet '12: Proceedings of the 8h ACM symposium on QoS and security for wireless and mobile networksPages 79–80https://doi.org/10.1145/2387218.2387235Green internet of things are investigated by studying energy-efficiency in wireless sensor networks. A cooperative multihop data transmission approach is presented and analyzed. Significant energy savings are achieved with the proposed approach compared ...
- panelJuly 2012
Panel: going green across communications and storage systems: control of power in non-mobile devices
ISLPED '12: Proceedings of the 2012 ACM/IEEE international symposium on Low power electronics and designPages 121–122https://doi.org/10.1145/2333660.2333691There is a growing need to reduce device power to meet environmental, thermal, packaging, operating cost and other constraints in enterprise and carrier class applications. These pressures affect all levels of design targeted towards non-mobile ...
- research-articleJuly 2012
Green OLSR in VANETs with differential evolution
GECCO '12: Proceedings of the 14th annual conference companion on Genetic and evolutionary computationPages 11–18https://doi.org/10.1145/2330784.2330787Vehicular ad hoc networks (VANETs) provide a communication platform to deploy information exchange applications among road users. The energy consumption of the involved terminals, that rely on limited battery power, has led to research to design energy-...
- tutorialJuly 2011
An efficient routing protocol for green communications in vehicular ad-hoc networks
GECCO '11: Proceedings of the 13th annual conference companion on Genetic and evolutionary computationPages 719–726https://doi.org/10.1145/2001858.2002076Vehicular ad-hoc networks (VANETs) provide the communications required to deploy Intelligent Transportation Systems (ITS). In the current state of the art there is a lack of studies on Green Communications (energy-efficiency) in VANETs. However, due to ...
- research-articleFebruary 2011
Toward green cloud computing
ICUIMC '11: Proceedings of the 5th International Conference on Ubiquitous Information Management and CommunicationArticle No.: 31, Pages 1–5https://doi.org/10.1145/1968613.1968651Cloud computing is emerging as a critical information communication technology to heavily impact our daily life in the future. We systematically analyze its energy consumption based on types of services and obtain the conditions to facilitate green cloud ...
- research-articleJune 2009
Cognitive radio: an enabling technology for the green radio communications concept
IWCMC '09: Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World WirelesslyPages 489–494https://doi.org/10.1145/1582379.1582486In this paper, Cognitive Radio (CR) is proposed as an efficient technology to meet the Green communications concept. First of all, the concept of "green communications" is extended to the radio communications world. The main topics, described for ...