multi hop cognitive radio networks

... rrder in cognitive radio IEEE Trans Wirel Commun 8(1) (2009) H Su, X Zhang, Cross-layer based opportunistic MAC protocols for QoS provisionings over cognitive radio 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 cognitive radio networks 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 cognitive radio networks EURASIP Journal on Wireless Communications and Networking 2011 2011:7 Submit...

Ngày tải lên: 21/06/2014, 03:20

... 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 Cognitive Radio Models antenna systems and secrecy communication systems, and present the contributions and organization of this thesis 1.1 Cognitive Radio 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...

Ngày tải lên: 11/09/2015, 10:18

... is optimal in cognitive radio networks IEEE Trans Wirel Commun 7(10), 4010–4018 (2008) [8] S Xie, Y Liu, Y Zhang, R Yu, A parallel cooperative spectrum sensing in cognitive radio networks 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 cognitive radio networks Proc IEE ... survey on MAC protocols for cognitive radio networks 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...

Ngày tải lên: 18/06/2014, 22:20

... 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 cognitive radio networks IEEE J Sel Top Signal Process 5(1), 77–86 (2011) KB Letaief, W Zhang, Cooperative communications for cognitive radio networks Proc IEEE 97(5), ... cognitive radio networks IEEE Trans Wirel Commun 7(4), 1326–1337 (2008) W Zhang, RK Mallik, KB Letaief, Optimization of cooperative spectrum sensing with energy detection in cognitive radio networks...

Ngày tải lên: 20/06/2014, 21:20

... 2010) P Zhu, J Li, X Wang, Scheduling model for cognitive radio, in Proceedings of 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications 2008, Singapore, ... secondary users in a cognitive radio 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...

Ngày tải lên: 20/06/2014, 22:20

... 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...

Ngày tải lên: 20/06/2014, 22:20

... Finally, we conclude this article in ‘Concluding remarks’ section System model Cognitive radio network model The cognitive radio network we considered here is shown in Figure We model a situation where ... algorithms for cognitive radio 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),...

Ngày tải lên: 21/06/2014, 00:20

... management in multihop cognitive radio networks for delay-sensitive transmission IEEE Trans Veh Technol 58(2), 941–953 (2009) IF Akyildiz, W-Y Lee, KR Chowdhury, CRAHNs: cognitive radio ad hoc networks ... References S Haykin, Cognitive radio: brain-empowered wireless communications IEEE J Sel Areas Commu 32(2), 201–220 (2005) K Hicham, M Naceur, F Serge, Multihop cognitive radio networks: to route ... scheduling in multi- radio multi- channel wireless networks, in INFOCOM (IEEE, 2009), 1512–1520 (2009) AP Subramanian, H Gupta, SR Das, J Cao, Minimum interference channel assignment in multiradio wireless...

Ngày tải lên: 21/06/2014, 02:20

... the performance of cognitive radio networks [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 cognitive radio networks have not been studied in the literature, which is another main focus of this paper In this paper, performance analysis of dispersed spectrum cognitive radio systems ... communicated using the dispersed spectrum cognitive radio systems In order to derive the effective transport capacity for the ad hoc dispersed spectrum cognitive radio networks, the following network communication...

Ngày tải lên: 21/06/2014, 05:20

... “Ensuring trustworthy spectrum sensing in cognitive radio networks, ” in Proceedings of the 1st IEEE Workshop on Networking Technologies for Software Defined Radio Networks (SDR ’06), pp 110–119, September ... Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom ’08), May 2008 ´ [4] O Leon, J Hern´ ndez-Serrano, and M Soriano, “Securing a cognitive radio 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 cognitive radio networks: threats and mitigation,”...

Ngày tải lên: 21/06/2014, 11:20

... 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 cognitive radio networks 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,...

Ngày tải lên: 21/06/2014, 17:20

... and N Goergen, “Security in cognitive radio networks: threats and mitigation,” in Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications ... Access in Cognitive Radio 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 cognitive radio networks, ” IEEE Journal on Selected Areas in Communications, vol 26, no 1, pp 25–37, 2008 T Newman and T Clancy, “Security threats to cognitive radio signal classifiers,”...

Ngày tải lên: 21/06/2014, 19:20

... 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- hop networks 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...

Ngày tải lên: 22/06/2014, 19:20

... 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...

Ngày tải lên: 22/06/2014, 22:20

... 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 hop networks and does not address multi- hop networks Thus, we focus mainly on ensuring fair service to users in a multi- hop WMN 2.3 Design Goals In this section,...

Ngày tải lên: 30/10/2014, 20:08

... Abstract Innovative Approaches to Spectrum Selection, Sensing, and Sharing in Cognitive Radio Networks In a cognitive radio network (CRN), bands of a spectrum are shared by licensed (primary) and ... Function Cognitive Radio CRN Cognitive Radio Network DSA Dynamic Spectrum Access HMM IF NC − OFDMA Hidden Markov Model Intermediate Frequency Non − contiguous Orthogonal Frequency Division Multiple ... for Cognitive Radio Networks Employing NC-OFDM Transmission 133 6.1 Introduction 133 6.2 System Model 135 6.2.1 Wireless Multicarrier...

Ngày tải lên: 30/10/2014, 20:09

... Limit Theorem CTMC Continuous-time Markov Chain CR Cognitive Radio CRN Cognitive Radio 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 cognitive radio MAC protocols for cognitive radio 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...

Ngày tải lên: 10/09/2015, 08:28

... Variable CR Cognitive Radio CRN Cognitive Radio Networks 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- hop Networks 20 Cooperative Spectrum Sensing Strategies for Cognitive Radio Mesh Networks 24 3.1 Introduction ... WLAN and Multi- hop Networks 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...

Ngày tải lên: 10/09/2015, 15:53

... Line-Of-Sight MAC Multiple Access Channel MIMO Multiple Input Multiple Output MISO Multiple Input Single Output OFDM Orthogonal Frequency Division Multiplexing OFDMA Orthogonal Frequency Division Multiple ... Broadcast Channel BF Block Fading BS Base Station C-BC Cognitive Broadcast Channel C-MAC Cognitive Multiple Access Channel CR Cognitive Radio CSCG Circularly Symmetric Complex Gaussian CSI Channel ... capacities of various fading CR networks, including single CR point-to-point channel, cognitive multiple access channels (C-MAC), and cognitive orthogonal frequency division multiplexing (OFDM) systems...

Ngày tải lên: 11/09/2015, 10:15