... rrder in cognitiveradio IEEE Trans Wirel Commun 8(1) (2009) H Su, X Zhang, Cross-layer based opportunistic MAC protocols for QoS provisionings over cognitiveradio mobile wireless networks IEEE ... optimization for energy-constrained cognitive radios EURASIP J Wirel Commun Netw 2010 (2010) WY Lee, IF Akyildiz, Optimal spectrum sensing framework for cognitiveradionetworks IEEE Trans Wirel Commun ... doi:10.1186/1687-1499-2011-7 Cite this article as: Xu et al.: Selective sensing and transmission for multi- channel cognitiveradionetworks EURASIP Journal on Wireless Communications and Networking 2011 2011:7 Submit...
... three multi- antenna based CR channels, including the CR single-input multiple-output multiple access channels (SIMO-MAC), CR multiple-input multiple-output broadcast channels (MIMOBC), and CR multiple-input ... allocation for multi- 1.1 CognitiveRadio Models antenna systems and secrecy communication systems, and present the contributions and organization of this thesis 1.1 CognitiveRadio Models According ... including the CR single-input multiple-output multiple access channels (SIMO-MAC), the CR multiple-input multiple-output broadcast channels (MIMO-BC), and the CR multiple-input single-output (MISO) channels...
... is optimal in cognitiveradionetworks IEEE Trans Wirel Commun 7(10), 4010–4018 (2008) [8] S Xie, Y Liu, Y Zhang, R Yu, A parallel cooperative spectrum sensing in cognitiveradionetworks IEEE ... spectrum gridlock with cognitive radios: an information theoretic perspective Proc IEEE 97(5), 894–914 (2009) [6] KB Letaief, W Zhang, Cooperative communications for cognitiveradionetworks Proc IEE ... survey on MAC protocols for cognitiveradionetworks J Ad Hoc Netw 7, 1315–1329 (2009) [14] H Mujeeb, F Aslam, S Aslam, Device-centric spectrum sharing for cognitive radios, in Proceeding of the...
... sensing in cognitive radio, part I: two user networks IEEE Trans Wirel Commun 6(6), 2204–2213 (2007) G Ganesan, Y (G) Li, Cooperative spectrum sensing in cognitive radio, part II: multiuser networks ... cooperative spectrum sensing for cognitiveradionetworks IEEE J Sel Top Signal Process 5(1), 77–86 (2011) KB Letaief, W Zhang, Cooperative communications for cognitiveradionetworks Proc IEEE 97(5), ... cognitiveradionetworks IEEE Trans Wirel Commun 7(4), 1326–1337 (2008) W Zhang, RK Mallik, KB Letaief, Optimization of cooperative spectrum sensing with energy detection in cognitiveradio networks...
... 2010) P Zhu, J Li, X Wang, Scheduling model for cognitive radio, in Proceedings of 3rd International Conference on CognitiveRadio Oriented Wireless Networks and Communications 2008, Singapore, ... secondary users in a cognitiveradio network, in Proceedings of IEEE Sarnoff Symposium 2009, New Jersey, USA, 1–5 (March 2009) SM Kannappa, M Saquib, Performance analysis of a cognitive network ... References S Haykin, Cognitive radio: brain-empowered wireless communications IEEE J Sel Areas Commun 23(2), 201–220 (2005) PK Tang, YH Chew, LC Ong, MK Haldar, Performance of secondary radios in spectrum...
... energy model for clustered multi- hop WSNs 4.1 Energy consumption model 4.1.1 Total number of hops between the cluster-heads and the sink node The average number of hops between the cluster-heads ... for wireless sensor networks, in Proceedings of IEEE WoWMoM, Kos, Greece, 15–19 (June 2009) J Choi, C Lee, Energy modeling inside a cluster for the multi- hop clustered sensor networks, in Proceedings ... consumed by a radio during an idle state which refers to the state when the radio is on but not transmitting nor receiving any data In CRS, the errors of EEHCA in deriving the number of hops between...
... Finally, we conclude this article in ‘Concluding remarks’ section System model Cognitiveradio network model The cognitiveradio network we considered here is shown in Figure We model a situation where ... algorithms for cognitiveradio applications IEEE Commun Surveys Tutorials 11(1), 772–776 (2009) A Ghasemi, ES Sousa, Interference aggregation in spectrum-sensing cognitive wireless networks IEEE ... 24 August 2011 Published: 24 August 2011 References J Mitola III, G Maguire Jr, Cognitive radio: making software radios more personal Personal Communications, IEEE see also IEEE Wire Commun 6(4),...
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... the performance of cognitiveradionetworks [8, 9] It is concluded that use of network topology information could bring significant benefits to cognitive radios and networks to reduce the maximum ... spectrum cognitiveradionetworks have not been studied in the literature, which is another main focus of this paper In this paper, performance analysis of dispersed spectrum cognitiveradio systems ... communicated using the dispersed spectrum cognitiveradio systems In order to derive the effective transport capacity for the ad hoc dispersed spectrum cognitiveradio networks, the following network communication...
... “Ensuring trustworthy spectrum sensing in cognitiveradio networks, ” in Proceedings of the 1st IEEE Workshop on Networking Technologies for Software Defined RadioNetworks (SDR ’06), pp 110–119, September ... Conference on CognitiveRadio Oriented Wireless Networks and Communications (CrownCom ’08), May 2008 ´ [4] O Leon, J Hern´ ndez-Serrano, and M Soriano, “Securing a cognitiveradio networks, ” International ... first wireless standard based on cognitive radios,” Journal of Communications, vol 1, no 1, pp 38–47, 2006 [3] C T Clancy and N Goergen, “Security in cognitiveradio networks: threats and mitigation,”...
... framework in multi- hop relay networks in [12] Besides, the linear marking mechanism based optimal RN assignment scheme has been designed with formal proof of the linear complexity in [13] Multi- hop relay ... Cooperative communications for cognitiveradionetworks Proc IEEE 97(5), 878–893 (2009) Y Guo, G Kang, N Zhang, W Zhou, P Zhang, Outage performance of relay-assisted cognitive- radio system under spectrum-sharing ... usage efficiency Furthermore, based on softwaredefined radio (SDR) [4] and CR [3] technologies, novel cognitive techniques with multi- domain radio environment cognition, autonomous decision making,...
... and N Goergen, “Security in cognitiveradio networks: threats and mitigation,” in Proceedings of the 3rd International Conference on CognitiveRadio Oriented Wireless Networks and Communications ... Access in CognitiveRadio Networks, Cambridge University Press, Cambridge, UK, 2008 [4] D Cabric, S M Mishra, and R W Brodersen, “Implementation issues in spectrum sensing for cognitive radios,” ... emulation attacks in cognitiveradio networks, ” IEEE Journal on Selected Areas in Communications, vol 26, no 1, pp 25–37, 2008 T Newman and T Clancy, “Security threats to cognitiveradio signal classifiers,”...
... of services like unicast and multicast routing, legacy multimedia, and security that would be interesting to have on this type of networks Using multi- hop ad hoc networks as an Internet extension ... sharing in mobile ad hoc networks: from theory to reality,” Evgeny Osipov and Christian Tschudin study the unfairness between multiple TCP flows in wireless multi- hopnetworks Specifically, the ... max-min fairness between multiple flows Finally, the authors propose a rate throttling mechanism to enforce the fairness Modeling users’ mobility in multi- hop ad hoc networks is the subject of...
... performance compared to the multi- hop LEACH scheme and the proposed MIMO LEACH scheme The reason is that the multi- hop operation in the multi- hop LEACH scheme and the multihop MIMO-LEACH scheme will ... the multi- hop MIMO-LEACH scheme can transmit much more data packets compared to the LEACH protocol and the multi- hop LEACH scheme From these simulation results, we can find that the multi- hop ... protocol, the multi- hop LEACH scheme, and the proposed multi- hop MIMO-LEACH scheme is about 0.7 × 104 , 8.2 × 104 , and 11 × 104 s The improvement on network lifetime obtained by the multi- Hop MIMO-LEACH...
... Unfairness in Multi- hop Wireless Mesh Networks In a multi- hop WMN, packets originated from MRs with larger number of hops experience poor performance compared to those from MRs with fewer hops (spatial ... using the multi- rate and multi- channel capable multiinterface designs In Chapter 4, we present a comprehensive multi- path routing discovery and maintenance protocol for multi- radio multi- channel ... differentiation, it focuses mainly on single hopnetworks and does not address multi- hopnetworks Thus, we focus mainly on ensuring fair service to users in a multi- hop WMN 2.3 Design Goals In this section,...
... Abstract Innovative Approaches to Spectrum Selection, Sensing, and Sharing in CognitiveRadioNetworks In a cognitiveradio network (CRN), bands of a spectrum are shared by licensed (primary) and ... Function CognitiveRadio CRN CognitiveRadio Network DSA Dynamic Spectrum Access HMM IF NC − OFDMA Hidden Markov Model Intermediate Frequency Non − contiguous Orthogonal Frequency Division Multiple ... for CognitiveRadioNetworks Employing NC-OFDM Transmission 133 6.1 Introduction 133 6.2 System Model 135 6.2.1 Wireless Multicarrier...
... Limit Theorem CTMC Continuous-time Markov Chain CR CognitiveRadio CRN CognitiveRadio Network CSD Cyclic Spectrum Density CSMA/CA Carrier Sense Multiple Access with Collision Avoidance CTS Clear-To-Send ... literature review on existing spectrum sensing methods and cognitiveradio MAC protocols for cognitiveradio or opportunistic spectrum access networks Chapter describes the proposed Bayesian spectrum ... internal radio environment, such as radio transmission frequency, bandwidth, power, modulation, user behavior and network state There are also a number of industrial applications on cognitive radio...
... Variable CR CognitiveRadio CRN CognitiveRadioNetworks CSCG Circularly Symmetric Complex Gaussian CSI Channel State Information CSMA Carrier Sense Multiple Access CSMA/CA Carrier Sense Multiple ... 19 IEEE 802.11 MAC Protocol in WLAN and Multi- hopNetworks 20 Cooperative Spectrum Sensing Strategies for CognitiveRadio Mesh Networks 24 3.1 Introduction ... WLAN and Multi- hopNetworks IEEE 802.11 [31] is the standard protocol providing the wireless connectivity for WLAN, which has been widely extended into the wireless multi- hop ad hoc or mesh networks...