Results 1 to 10 of about 528,139 (301)

Efficient Relocation of Spectrum Incumbents [PDF]

open access: yesThe Journal of Law and Economics, 1998
Changes in technologies and in consumer demands have made prior radio spectrum allocations far from efficient. To address this problem the FCC has recently reallocated spectrum for more flexible use in bands that are partially occupied by incumbent license holders.
Cramton, Peter   +2 more
openaire   +1 more source

Energy-efficient and high-spectrum-efficiency wireless transmission

open access: yesICST Transactions on Mobile Communications and Applications, 2022
With the deployment and commercialization of the fifth-generation (5G) mobile communication networks, the access nodes and data volume of wireless networks are showing massive and explosive growth. In this paper, we firstly review the research progress on the energy-efficient and spectrum-efficient wireless transmission, from the perspectives of both ...
Yajuan Tang   +29 more
openaire   +3 more sources

Adaptive Modulation Method of EON based on Deep Neural Network

open access: yesGuangtongxin yanjiu, 2021
In order to maximize the total spectrum efficiency and improve the Quality of Experience (QoE) on Elastic Optical Network (EON), an adaptive modulation method based on Deep Neural Network (DNN) is proposed.
Jian-hua WANG, Yu-kun RAN, Jie ZHAO
doaj   +1 more source

Spectral efficiency of spectrum-pooling systems [PDF]

open access: yesIET Communications, 2008
In this contribution, we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband system in which the primary and cognitive users wish to communicate to different receivers, subject to mutual interference and assume that each user knows only his channel and ...
Majed Haddad   +2 more
openaire   +3 more sources

The Efficiency of the Fcc Spectrum Auctions [PDF]

open access: yesThe Journal of Law and Economics, 1998
From July 1994 to July 1996, the Federal Communications Commission (FCC) conducted nine spectrum auctions, raising about $20 billion for the U.S. Treasury. The auctions assigned thousands of licenses to hundreds of firms. Were the auctions efficient?
openaire   +1 more source

Time Switching Based Wireless Powered Relay Transmission with Uplink NOMA

open access: yesSensors, 2021
Non-orthogonal multiple access (NOMA) utilizes power domain multiplexing to improve spectrum efficiency compared with orthogonal multiple access (OMA). In the Internet of Things (IoT) uplink NOMA networks, if the channel between the far-end node and the ...
Zhihua Lin, Shihua Cao, Jianqing Li
doaj   +1 more source

SE and EE Optimization for Cognitive UAV Network Based on Location Information

open access: yesIEEE Access, 2019
Unmanned Aerial Vehicle (UAV) aided communication has the potential to provide on-demand wireless services and improve the outdoor link throughput. Applications for UAVs are rapidly growing with the development of Internet of Things.
Hang Hu   +5 more
doaj   +1 more source

Energy-Efficient Nonstationary Spectrum Sharing [PDF]

open access: yesIEEE Transactions on Communications, 2014
41 pages, 7 figures.
Yuanzhang Xiao, Mihaela van der Schaar
openaire   +3 more sources

A survey on resource allocation in backscatter communication networks

open access: yes物联网学报, 2021
With the development of Internet of things (IoT) technology, wireless networks have the characteristics of massive user access, high power consumption, and high capacity requirements.In order to meet the transmission requirements and reduce energy ...
Yongjun XU   +4 more
doaj   +2 more sources

On the Efficiency and Complexity of Distributed Spectrum Allocation [PDF]

open access: yes2007 2nd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, 2007
We study the efficiency and complexity of a distributed spectrum allocation algorithm using explicit user coordination. Users self-organize into coordination groups and adjust spectrum assignments in each local group to approximate an optimal assignment.
Lili Cao, Haitao Zheng 0001
openaire   +1 more source

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