multi hop cognitive radio networks

... scheme outperformed the conventional multi-hop direct transmission protocol Keywords: physical-layer security; underlay cognitive radio; cooperative multi-hop transmission; secrecy outage probability; ...



Abstract: In this paper, we consider a cooperative multi-hop secured transmission protocol to underlay cognitive radio networks In the proposed protocol, a secondary source attempts ... Trang 1Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments Phu

Ngày tải lên: 22/11/2022, 19:46

... outage probability of cognitive radio networks In Proceedings of WPMC (pp 1–6) New Jersey, USA Tran, H., Zepernick, H J., & Thai, C D T (2013) Outage performance of cognitive radio networks under outage ... decode-and-forward multi-hop cognitive networks with estimation errors IET Communications, 7(18), 2122–2132 45 Khuong, H V (2013) Exact outage analysis of underlay cooperative cognitive networks with ... cognitive radio networks with interference constraints IET Communications, 7(10), 922–930 28 Sharma, P K., Solanki, S., & Upadhyay, P (2015) Outage analysis of cognitive opportunistic relay networks

Ngày tải lên: 16/12/2017, 11:30

... society to enhance the performance of cognitive radionetworks Li et al [29] applied the social network approach to analyze the socialbehavior in cognitive radio networks Chen et al [30] proposed ... control in cognitive radio networks with random access, in IEEE INFOCOM (2011) 16 D Li, Y Xu, J Liu, X Wang, Z Han, A market game for dynamic multi-band sharing in cognitive radio networks, in IEEE ... mobile ad hoc networks, in IEEE Conference on Local Computer Networks (LCN) (2010) Trang 1612 N Nie, C Comaniciu, Adaptive channel allocation spectrum etiquette for cognitive radionetworks, in

Ngày tải lên: 14/09/2020, 16:14

... single-hop transmission environment to preciselyevaluate the collision prevention of the proposed method without any external factors.Although some WSNs use a multi-hop model, single-hop networks, ... difference in multi-hop communication compared to single-hop is the duration Trang 38of transferring a packet from source nodes to the sink These durations are nearly thesame for single-hop environments, ... durations are nearly thesame for single-hop environments, but vary in multi-hop communication Hence, estimatingcontention time in multi-hop communication is more difficult.3.2.3 Minimum sending time

Ngày tải lên: 11/07/2021, 16:56

... these emerging technologies, full-duplex relaying cognitive radio networks, device-to-device communications and cell-free massive multiple-input and multiple-output have been considered as promising ... done and many solutions related to the radio access network have been proposed, such as cell-free (CF) massive multiple-input multiple-output (MIMO), cognitive radio network (CRNs), full-duplex relaying ... relaying cognitive radio networks, device-to-device communications 1 Introduction Since the last two decades, we have witnessed an impressive and unpredictable growth of wireless cellular networks

Ngày tải lên: 24/10/2022, 17:38

... order to improve the efficiency and fairness of cooperative multiuser orthogonal frequency division multiplexing (MU-OFDM) cognitive radio (CR) systems A communication model where one source node ... simulation results Keywords: cognitive radio; cooperative communication; resource allocation; proportional fairness; spectrum sharing Trang 21 Introduction Cognitive radio technology (CR) has been ... Based Resource Allocation Scheme Using Proportional Fairness for Cooperative OFDM-Based Cognitive Radio Networks Yongtao Ma, Liuji Zhou * and Kaihua Liu School of Electronic Information Engineering,

Ngày tải lên: 01/11/2022, 08:54

... policy of wireless communication systems, cognitive radio [1] has been considered as a promising means for improving efficient spectrum usage Using cognitive radio (CR), the secondary users (SUs) ... a soft-hard combination scheme, called SHC scheme, for cooperative spectrum sensing in cognitive radio networks The SHC scheme deploys a cluster based network in which Likelihood Ratio Test (LRT)-based ... hard combination scheme for cooperative detection [13] or in concurrence transmission in cognitive radio networks [18].Since we consider the large network where each cluster experiments a different

Ngày tải lên: 01/11/2022, 08:55

... give an overview of cognitive radio networks and after that we will discuss network coding schemes in cognitive radio networks 5.1 Cognitive Radio Networks Cognitive radio networks is an emerging ... more robust Network coding has been used in many networks like wireless sensor networks, traditional wireless networks, video multicast networks, P2P networks etc However, in this chapter, we focus ... proposed for CRNs 5.2 Network Coding in Cognitive Radio Networks In [19], authors explored network coding aware channel allocation and routing in cognitive radio networks and exploit the throughput

Ngày tải lên: 16/08/2023, 16:03

... Trang 1R E S E A R C H Open AccessMultistage Quadrature Sigma-Delta Modulators for Reconfigurable Multi-Band Analog-Digital Interface in Cognitive Radio Devices Abstract This article addresses ... further toward flexible and reconfigurable A/D interface for cognitive radio (CR) receivers enabling efficient parallel reception of multiple noncontiguous frequency slices signal conditions based ... ever-increasing traf-fic amounts, create a widely acknowledged need for novel radio solutions, such as emerging cognitive radio (CR) paradigm [1,2] On the other hand, transceiver implementations,

Ngày tải lên: 20/06/2014, 22:20

... selection for mobile stations in IEEE 802.16 multihop relay networks in Proceedings of International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), June 2008, pp 1–8 27 ... 802.16e/802.16-2009 only provides single hop wireless connectivity So the latest version, IEEE 802.16j-2009 [9] was proposed for mobile multi-hop relay (MMR) networks In an MMR network, Mobile Stations ... smaller hop count than original node’s hop count, it can return some bandwidth We calculate the system remaining resource according to the difference of MH original hop count and MH new hop count

Ngày tải lên: 21/06/2014, 03:20

... Virtual collision, Multi-hop network, Hidden node, Markov chain. 1 Introduction The IEEE 802.11 has become ubiquitous and gained widespread popularity for wireless multi-hop networks To adapt ... Wireless Multi-hop Networks Minh Trong Hoang*, Minh Hoang, Duc Cong Le Abstract The IEEE 802.11e standard has been introduced to support service differentiation for wireless local area networks ... in multi-hop networks Hence, in this paper, a novel analytical model enhanced from our previous work is proposed to overcome these previous limitations to analyze throughput and access delay multi-hop

Ngày tải lên: 13/08/2015, 10:00

... more than a gle hop HRS can be extended to multi-hop networks if network-wide timesynchronization is required The multi-hop extension of HRS is described sin-in this section A single-hop network ... 34 4.2 Single Hop HRS: Time synchronization error 36 4.3 Single Hop HRS: Probability density function 37 4.4 Multi Hop HRS: Time synchronization error 38 4.5 Multi Hop HRS: Probability ... TIMESYNCHRONIZATION FOR MULTI-HOP WIRELESS NETWORKS LIM YUN CAI NATIONAL UNIVERSITY OF SINGAPORE 2012 Trang 2RECEIVER-BASED TIME SYNCHRONIZATION FORMULTI-HOP WIRELESS NETWORKS LIM YUN CAI(B.Eng

Ngày tải lên: 02/10/2015, 17:14

... Trang 1ĐẠI HỌC QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC CÔNG NGHỆ Đinh Thị Thái Mai NGHIÊN CỨU COGNITIVE RADIO HỢP TÁC CẢM NHẬN KÊNH TRONG MÔI TRƯỜNG PHA ĐINH Chuyên ngành: Kỹ thuật Viễn thông Mã ... theo Vô tuyến có ý thức được định nghĩa là một bộ vô tuyến trên nềntảng phần mềm (Software Defined Radio) thúc đẩy sự linh hoạt cácdịch vụ vô tuyến cá nhân Hố phổ (Spectrum hole) là một dải tần số

Ngày tải lên: 24/04/2016, 00:08

... 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

... 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

... 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