Results 21 to 30 of about 216,240 (267)
On Detecting Termination in Cognitive Radio Networks [PDF]
2011 IEEE 17th Pacific Rim International Symposium on Dependable Computing, 2011 SUMMARYThe cognitive radio networks are an emerging wireless communication and computing paradigm. The cognitive radio nodes execute computations on multiple heterogeneous channels in the absence of licensed users (a.k.a. primary users) of those bands. The termination detection is a fundamental and non‐trivial problem in distributed systems.
Shantanu Sharma 0001 +1 more
openaire +2 more sources
Spectrum sharing and cognitive radio [PDF]
, 2009 Spectrum sharing has been the subject of a 3 year research programme organised by the UK's Virtual Centre of Excellence in Mobile and Personal Communications.
Beach, MA +5 more
core +2 more sources
On routing in Cognitive Radio Networks
2012 9th International Conference on Communications (COMM), 2012 Cognitive Radio Networks (CRNs) are expected to address and to resolve important technological and operational challenges of future networks, such as Dynamic Spectrum Access (DSA), routing in heterogeneous networks and provision of Quality of Experience (QoE) for different applications.
Popescu, Alexandru, Fiedler, Markus
openaire +3 more sources
2012 9th International Conference on Communications (COMM), 2012 Cognitive Radio Networks (CRNs) are emerging as a solution to increase the spectrum utilization by using unused or less used spectrum in radio environments. The basic idea is to allow unlicensed users access to licensed spectrum, under the condition that the interference perceived by the licensed users is minimal.
openaire +3 more sources
South African Computer Journal, 2019 Cognitive radio network, which enables dynamic spectrum access, addresses the scarcity of radio spectrum caused by ever-increasing demand for spectrum.
Sekgoari Semaka Mapunya +1 more
doaj +1 more source
International Journal of Distributed Sensor Networks, 2015 In cognitive radio networks, secondary users may not sense licensed channels efficiently due to problems of fading channel, shadowing, unfamiliar environment, and so forth.
Thanh-Tung Nguyen, Insoo Koo
doaj +1 more source
International Journal of Distributed Sensor Networks, 2022 Cognitive radios are expected to play an important role in capturing the constantly growing traffic interest on remote networks. To improve the usage of the radio range, a cognitive radio hub detects the weather, evaluates the open-air qualities, and ...
Ahmed Alkhayyat +6 more
doaj +1 more source
Throughput analysis for cognitive radio networks with multiple primary users and imperfect spectrum sensing [PDF]
, 2012 In cognitive radio networks, the licensed frequency bands of the primary users (PUs) are available to the secondary user (SU) provided that they do not cause significant interference to the PUs.
Alouini, M.-S. +4 more
core +1 more source
Spectrum Allocation of Cognitive Radio Based on Autonomy Evolutionary Algorithm
Cybernetics and Information Technologies, 2016 Reasonable and effective allocation of cognitive radio spectrum resource according to user’s requirements is the key task of cognitive radio network. Cognitive radio spectrum allocation problem can be viewed as an optimization problem.
Li Yongcheng, Shen Hai, Wang Manxi
doaj +1 more source
Wireless Broadband Opportunities through TVWS for Networking in Rural areas of Africa [PDF]
EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2015 In this paper, we propose a new approach based on Cognitive Radio technology to address the challenges for ensuring connectivity in remote areas of Africa.
Dramane Ouattara +3 more
doaj +3 more sources