cognitive radio ad hoc networks

An overview of scaling laws in ad hoc and cognitive radio networks
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Abstract Currently, wireless communications are changing along the lines of three main
thrusts. The first is the introduction of secondary spectrum licensing (SSL). Regulations on
the usage of licensed spectra are being loosened, encouraging unused primary spectrum 

A learning automata-based cognitive radio for clustered wireless ad-hoc networks
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Abstract In current wireless networks, the radio systems are regulated by a fixed spectrum
assignment strategy. This policy partitions the whole radio spectrum into a fixed number of
radio ranges, each exclusively assigned to a specific user. Such a spectrum assignment 

Distributed spectrum sharing for video streaming in cognitive radio ad hoc networks
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A distributed joint routing and spectrum sharing algorithm for video streaming applications
over cognitive radio ad hoc networks is proposed in this article. The proposed cross-layer
control scheme dynamically allocates routes, spectrum and power to maximize the 

 Reinforcement learning-based cooperative sensing in cognitive radio ad hoc networks
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BF Lo, IF Akyildiz ,Environment, 2010 ,
Abstract—In cognitive radio networks, spectrum sensing is a fundamental function for
detecting the presence of primary users in licensed frequency bands. Due to multipath
fading and shadowing, the performance of detection may be considerably compromised. 

Learning-Based Spectrum Selection in Cognitive Radio Ad Hoc Networks
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Cognitive Radio Ad Hoc Networks (CRAHNs) must identify the best operational
characteristics based on the local spectrum availability, reachability with other nodes, choice
of spectrum, while maintaining an acceptable end-to-end performance. The distributed 

Percolation theory based connectivity and latency analysis of cognitive radio ad hoc networks
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Abstract This paper investigates the dynamic connectivity and transmission latency of
cognitive radio ad-hoc networks (secondary networks) coexisting with licensed networks
(primary networks) that experience time-varying on-off links. It is shown that there exists a 

 A Consensus-based Protocol for Spectrum Sharing Fairness in Cognitive Radio Ad Hoc & Sensor Networks
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P Hu, M Ibnkahla ,ICC’12, 2012 ,
Abstract—Spectrum sharing is an important topic in cognitive radio ad hoc networks
(CRAHNs) and cognitive radio sensor networks (CRSNs). Bio-inspired consensus-based
protocols can provide light-weight and efficient solutions for CRAHNs and CRSNs but the 

Channel and Data Estimation for Ad Hoc Networks and Cognitive Radio
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LN Singh, GR Dattatreya , Journal of Wireless Information Networks, 2007 ,Springer
Estimation of channel and data characteristics by the receiver is important in adaptive
wireless transmission protocols and in cognitive radio. This paper formulates the estimation
problem with the help of an illustrative example from the IEEE 802.11 a OFDM standard. 

 CAODV: Routing in mobile ad-hoc cognitive radio networks
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Abstract—This paper deals with the routing in cognitive mobile ad hoc networks. We
propose to modify the widely adopted Ad-hoc On-demand Distance Vector (AODV) protocol
[1] in order to assure its functionality in the considered scenario. The resulting protocol, 

 Temporal traffic dynamics improve the connectivity of ad hoc cognitive radio networks
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W Ren, Q Zhao, A Swami ,2010 ,
Abstract We consider an ad hoc cognitive radio network, where secondary users access
channels temporarily unused by primary users and the existence of a communication link
between two secondary users depends not only on the distance between them but also on 

 Implementation of Routing Protocol for Cognitive Radio Ad-hoc Networks
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S Mahamuni, V Mishra ,International Journal of Engineering, 2012 ,
Abstract A cognitive radio is designed for the utilisation of unused frequency. Moreover, the
transmission opportunity of a cognitive node is not guaranteed due to the presence of
primary users (PUs). To better characterize the unique features of cognitive radio networks 

 Maximization of Throughput in Cognitive Radio Ad Hoc Networks (CRAHNs) using Relay Nodes-A Cross Layer Way
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A Babiyola, VC Raj ,European , 2012 ,europeanjournalofscientificresearch.
Abstract The scarcity of energy and bandwidth, are the two fundamental resources for
communications. It imposes severe limitations on the development of communications
networks in terms of bandwidth, capacity and performance. To utilize the scarce resources 

 Impact of Variance of Heterogeneous Spectrum on Performance of Cognitive Radio Ad Hoc Networks
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G Liu, X Zhu, G Zhu ,
Abstract—This paper addresses the impact of dynamic spatiotemporal variance of
heterogeneous spectrum on the performance of the Cognitive Radio Ad Hoc Networks
(CRAHNs). A dynamic heterogeneous spectrums Multiple Channels Reuse Areas (MCRA 

 A Spectrum-Aware Routing in DOFDM-based Cognitive Radio Ad-Hoc Networks
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Abstract—With the rapid requirement and development of the green ICT (Information and
Communication Technology) technology, the demand for dynamically radio spectrum
resources has significantly attentions. The low utilization of licensed spectrum leads to the 

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S Selvakanmani, M Sumathi ,2012 ,
ABSTRACT Ad hoc network is a collection of wireless mobile nodes that dynamically form a
temporary network without the use of any existing network infrastructure or centralized
administration. A cognitive radio is a radio that can change its transmitter parameters 

 CM-MAC: A Cognitive MAC Protocol with Mobility Support in Cognitive Radio Ad Hoc Networks
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P Hu, M Ibnkahla ,
Abstract—Cognitive radio ad hoc networks (CRAHNs) have recently been proposed as a
way to bring cognitive radio technology to traditional ad hoc networks. An important problem
is to design a medium access control (MAC) protocol that addresses the decentralized 

 Multiagent Jamming-Resilient Control Channel Game for Cognitive Radio Ad Hoc Networks
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BF Lo, IF Akyildiz ,
Abstract—Control channel jamming is a severe security problem in wireless networks. This
results from the fact that the attackers can effectively launch the denial of service attacks by
jamming the control channels. Traditional approaches to combating this problem such as 

 Dynamic TDMA Slot Reservation Protocol for QoS Provisioning in Cognitive Radio Ad Hoc Networks
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Abstract—In this paper, we propose a dynamic TDMA slot reservation (DTSR) protocol for
cognitive radio ad hoc networks. Quality of Service (QoS) guarantee plays a critically
important role in such networks. We consider the problem of providing QoS guarantee to 

 Practical Distributed Channel Selection Protocol for Single-hop Transmissions in Cognitive Radio Ad hoc Networks
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CN Ververidis, J Nasreddine, P Mähönen ,
ABSTRACT In this paper we propose a practical distributed channel selection protocol for
cognitive radio ad hoc networks considering single hop transmission. The proposed protocol
uses the control channel in order to exchange information concerning the available data 

 Modeling and Analysis of Cognitive Radio Ad Hoc Networks
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MSMA rabou Ahmed ,
Abstract Wireless ad hoc networks are becoming more ubiquitous in terms of devices,
application areas, etc. due to their low cost and minimal deployment effort. Since all these
networks operate in the unlicensed band, the problems of congestion and spectrum 

 Energy Efficient Resource Allocation in Cognitive Radio Wireless Ad Hoc Networks
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S Gao, L Qian, DR Vaman
Recent technological advances have resulted in the development of wireless ad hoc
networks which are envisioned to provide rapid on-demand network deployment due to their
self-configurability and lack of pre-deploy infrastructure requirements. These devices 

 Cooperative Spectrum Sensing with Optimal Sensing Ranges in Cognitive Radio Ad-Hoc Networks
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J Shim, Q Cheng, V Sarangan ,
Abstract—Cognitive radio has been proposed as an innovative and effective technology to
exploit the efficient reuse of the precious radio spectrum. In spectrum sensing which is a
crucial step in cognitive radio networks, an adequate sensing range needs to be defined 

 Joint path and spectrum diversity in cognitive radio ad-hoc networks
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Abstract The uncertain availability of the spectral resource imposes unique challenges in
cognitive radio networks. One of the critical issues is to counteract the performance
degradation experienced by cognitive users (CUs) due to the activity of primary users ( 

 Percolation-based Connectivity of Multiple Cooperative Cognitive Radio Ad Hoc Networks
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WC Ao, KC Chen ,
Abstract—In cognitive radio networking, the signal reception quality of a secondary user
degrades due to the interference from multiple heterogeneous primary networks, and also
the transmission activity of a secondary user is constrained by its interference to the 

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S Gull, M Shoaib, K Ahmed, S Shoaib, K Karim ,
ABSTRACT: Research activities have rapidly increased in disaster communications domain.
A critical problem is the provision of communications facility to the disaster victims before
rescue teams arrive; this allows victims to help each other. A novel resource management 

 Causal Ordering Group Communication for Cognitive Radio Ad Hoc Networks
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L Xie, X Jia, K Zhou ,
Abstract—In this paper, we discuss the causal ordering group communication for cognitive
radio (CR) networks. The issue of causal ordering has been studied extensively by previous
works. However, these works considered the problem at the application layer and the 

 Network-Wide Spectrum Situation Reconstruction using Total Variation Inpainting inCognitive Radio Ad Hoc Networks
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P Potier, CL Sorrells, Y Wang, L Qian, H Li ,
Abstract—In this paper, the problem of spectrum situation reconstruction is considered for
large cognitive radio ad hoc networks. The major challenge of such problem lies in the fact
that only very limited measurements of spectrum occupancy may be obtained by the 

 MAC Protocol Design for Parallel Link Rendezvous in Ad Hoc Cognitive Radio Networks
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ML Altamimi ,
Abstract The most significant challenge for next wireless generation is to work
opportunistically on the spectrum without a fixed spectrum allocation. Cognitive Radio (CR)
is the candidate technology to utilize spectrum white space, which requires the CR to