Results 231 to 240 of about 478,149 (274)

Hybrid spectrum sharing in dynamic spectrum access networks

The International Conference on Information Networking 2013 (ICOIN), 2013
In this work, inefficient spectrum usage problem which will lead to spectrum scarcity in future communications has been addressed. According to Federal Communications Commission, spectrum sharing is a technique to efficiently utilize the spectrum. We analyse dynamic spectrum access concepts such as overlay spectrum sharing and underlay spectrum sharing.
Nair, Sabari Somasekharan, Schellenberg, Sebastian, Seitz, Jochen, Chatterjee, Mainak   +3 more
openaire   +2 more sources

Dynamic Spectrum Sharing for NR-LTE Networks

2021 2nd Information Communication Technologies Conference (ICTC), 2021
5G has high requirements for the data rate, capacity and efficiency to support the new scenarios. Due to the scarcity of spectrum resources, dynamic spectrum sharing (DSS) technology is proposed to improve spectrum efficiency. However, dynamically allocating spectrum for 4G and 5G users will bring significant interference between two systems. Currently,
Jincan Xin, Sen Xu, Le Zhang
openaire   +1 more source

Dynamic and Collaborative Spectrum Sharing: The SCATTER Approach

2019 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), 2019
This paper presents the architecture and the basic principles behind the design and implementation of the SCATTER system, a wireless end-to-end communication system that participated in the DARPA Second Spectrum Collaboration Challenge (SC2). The focus is mainly on presenting the architecture and the supported interactions between the different ...
Giannoulis, Spilios, Donato, Carlos, Mennes, Ruben, de Figueiredo, Felipe A.P., Jabandžić, Irfan, De Bock, Yorick, Camelo, Miguel, Struye, Jakob, Maddala, Prasanthi, Mehari, Michael, Shahid, Adnan, Stojadinovic, Dragoslav, Claeys, Maxim, Mahfoudhi, Farouk, Liu, Wei, Seskar, Ivan, Latré, Steven, Moerman, Ingrid   +17 more
openaire   +2 more sources

Information Sharing in Spectrum Auction for Dynamic Spectrum Access

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009
Spectrum under-utilization is one of the bottlenecks of the development of wireless communication, and Dynamic Spectrum Access (DSA) is envisioned as a novel mechanism to solve the problem of spectrum scarcity. Spectrum Auction has been recognized as an effective way to achieve DSA, wherein the primary spectrum owner (PO) acts as an auctioneer who has ...
Hui Yu, Lin Gao, Yun Li, Xiaoying Gan, Xinbing Wang, Youyun Xu, Wen Chen, Athanasios V. Vasilakos   +7 more
openaire   +1 more source

Incentivizing spectrum sensing in database-driven dynamic spectrum sharing

IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications, 2016
The legacy concept of exclusion zones (EZs) is inept at enabling efficient utilization of fallow spectrum by secondary users (SUs), since legacy EZs are static and overly-conservative. The notion of a static EZ implies that it has to protect incumbent users (IUs) from the union of likely interference scenarios, leading to a worst-case, conservative ...
Bo Gao, Sudeep Bhattarai, Jung-Min Jerry Park, Yaling Yang, Min Liu, Kexiong Zeng, Yanzhi Dou   +6 more
openaire   +1 more source

Distributed Interference Cancellation for Dynamic Spectrum Sharing

2008 IEEE International Conference on Communications, 2008
This paper proposes a novel interference cancellation technique using the concept of a distributed array, for the secondary use of the frequency resources in frequency division duplexing (FDD)-based cellular systems. In order to achieve efficient distributed interference cancellation, the secondary system exploit intervals for periodic training signals
Nishimori, Kentaro, Yomo, Hiroyuki, Popovski, Petar   +2 more
openaire   +3 more sources

Cooperative Caching in Dynamic Shared Spectrum Networks

IEEE Transactions on Wireless Communications, 2016
This paper considers co-operation between primary and secondary users in shared spectrum radio networks via caching. We first consider a network with one channel shared between a single macro (primary) base station and multiple micro (secondary) base stations.
Dibakar Das, Alhussein A. Abouzeid
openaire   +1 more source

XG Dynamic Spectrum Sharing Field Test Results

2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2007
This paper describes the results of field testing of the XG Radio system. In August 2006, the XG Radio system was field tested at Fort A.P. Hill, Virginia, in the laboratory, and at field locations in Northern Virginia. The XG Radio system uses dynamic spectrum sharing technology to determine locally unused spectrum, and then operates on these channels
Mark McHenry, Eugene Livsics, Thao Nguyen, Nivedita Majumdar   +3 more
openaire   +1 more source

Spectrum Efficiency and Security in Dynamic Spectrum Sharing

2018
Ph. D.
openaire   +2 more sources

Dynamic spectrum sharing in hybrid satellite–terrestrial systems

2018
The focus of this chapter is on dynamic spectrum sharing in hybrid satellite-terrestrial systems. We start by classifying the scenarios for those systems. The most important dynamic spectrum sharing techniques such as spectrum sensing, databases, beamforming, beam hopping, and adaptive frequency and power allocation are discussed and their ...
Boumard, Sandrine, Höyhtyä, Marko
openaire   +1 more source