Application and Research of Routing Protocol Based on AODV in Cognitive Radio

2013 ◽  
Vol 336-338 ◽  
pp. 1776-1780 ◽  
Author(s):  
Yi Xian Chen
Keyword(s):  
Cognitive Radio ◽  
Routing Protocol ◽  
Data Transmission ◽  
Rapid Development ◽  
Radio Spectrum ◽  
Cross Layer ◽  
Spectral Integration ◽  
Depth Analysis ◽  
Radio Technology ◽  
Cognitive Radio Technology

With the rapid development of science and technology, the current spectrum resources can not simply cope with the high-load wireless networks transmission. In addition, because the use of spectrum resources can not be fully maximize the overload load phenomenon, which leads to the waste of resources and loss of the spectrum, the existing overall spectrum resources are not adequate utilization and its utilization can not be improved. Obviously, in order to meet the growing demand for Internet and wireless communications, we must address the low rate of utilization of spectrum resources To this end, it is proposed to use the spectrum resources in cognitive radio drainage techniques, cognitive radio node to perceive the change of radio spectrum resources, and thus connected in the most appropriate timing and spectral integration, the effect of radio data transmission, and adequately addressed the problem of the spectrum resource low utilization. This thesis is based on the in-depth analysis of cognitive radio technology to understand the routing protocol in wireless cross-layer data transmission, and then discuss the relevant characteristics of the AODV routing protocol, and base on the AODV, the routing protocol uses in the analysis of the radio network organization based on the proposed to the possibility of cognitive radio.

Cross-Layer Routing Protocol Based on AODV in Cognitive Radio

2013 ◽  
Vol 443 ◽  
pp. 388-391
Author(s):  
Yi Xian Chen
Keyword(s):  
Cognitive Radio ◽  
Routing Protocol ◽  
Data Transmission ◽  
Rapid Development ◽  
Cross Layer ◽  
Radio Network ◽  
Depth Analysis ◽  
Radio Technology ◽  
Cognitive Radio Technology ◽  
Aodv Routing Protocol

With the rapid development of science and technology, the current spectrum resources cannot simply cope with the high-load wireless networks cross-layer transmission. This thesis is based on the in-depth analysis of cognitive radio technology to understand the routing protocol in wireless cross-layer data transmission, and then discuss the relevant characteristics of the AODV routing protocol, and base on the AODV, the routing protocol uses in the analysis of the radio network organization based on the proposed to the possibility of cross-layer cognitive radio.

A Probabilistic Routing Protocol Based on Priori Information for Cognitive Radio Sensor Networks

2013 ◽  
Vol 303-306 ◽  
pp. 210-214 ◽  
Author(s):  
Zi Long Jin ◽  
Beom Seok Kim ◽  
Dong Hai Guan ◽  
Jin Sung Cho
Keyword(s):  
Cognitive Radio ◽  
Sensor Networks ◽  
Routing Protocol ◽  
Path Selection ◽  
System Throughput ◽  
Routing Metric ◽  
Selection Scheme ◽  
Cognitive Radio Sensor Networks ◽  
Radio Technology ◽  
Cognitive Radio Technology

The cognitive radio technology has been adopted as a promised solution to deal with overcrowded problem in ISM band. In wireless sensor networks, the cognitive radio technology enables sensor nodes to occupy licensed band in opportunistic manner and introduces advantages of improving spectrum utilization and increasing system throughput. By considering the opportunistic spectrum access nature, in this paper, we aim to provide a stable path selection scheme for cognitive radio sensor networks. The proposed routing protocol utilizes priori delivery information and derives a novel routing metric for the optimal path selection. The routing metric is derived from naïve Bayes inference and used to indicate the path stability by means of delivery probability. We show through extensive simulations that the proposed routing protocol is efficient to find the most probable delivery path and increase the system throughput.

scholarly journals Design and Study of Cognitive Network Physical Layer Simulation Platform

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Yongli An ◽  
Dong Wang ◽  
Yang Xiao
Keyword(s):  
Cognitive Radio ◽  
Data Transmission ◽  
High Performance ◽  
Physical Layer ◽  
Wireless Transmission ◽  
Wireless Data ◽  
Wireless Data Transmission ◽  
Radio Technology ◽  
Simulation Results ◽  
Cognitive Radio Technology

Cognitive radio technology has received wide attention for its ability to sense and use idle frequency. IEEE 802.22 WRAN, the first to follow the standard in cognitive radio technology, is featured by spectrum sensing and wireless data transmission. As far as wireless transmission is concerned, the availability and implementation of a mature and robust physical layer algorithm are essential to high performance. For the physical layer of WRAN using OFDMA technology, this paper proposes a synchronization algorithm and at the same time provides a public platform for the improvement and verification of that new algorithm. The simulation results show that the performance of the platform is highly close to the theoretical value.

scholarly journals Spectrum Sensing Techniques in Cognitive Radio Technology: A Review Paper

2020 ◽  
pp. 577-582
Author(s):  
Srinivas Samala ◽  
◽  
Subhashree Mishra ◽  
Sudhansu Sekhar Singh
Keyword(s):  
Cognitive Radio ◽  
Wireless Communication ◽  
Spectrum Sensing ◽  
Rapid Growth ◽  
Review Paper ◽  
Radio Spectrum ◽  
Cognitive Technology ◽  
The Past ◽  
Radio Technology ◽  
Cognitive Radio Technology

Over the past decade, Rapid growth in the field of wireless communication has increased demand for spectrum resources and created a shortage of available radio spectrum. The cognitive radio technology is one of the promising technology to address the scarcity of spectrum resources, from the introduction of cognitive technology there is a lot of research is going on its spectrum sensing techniques, this paper aimed to provide an in-depth review on recent advances in spectrum sensing techniques and thoroughly presents the merit, demerits, and scope of further research of each spectrum sensing techniques. Finally, this review paper is presented to help new researchers and to make them familiar with concepts of spectrum sensing.

scholarly journals Cognitive Radio Spectrum Sensing Mechanisms in TV White Spaces: A Survey

2018 ◽  
Vol 8 (6) ◽  
pp. 3673-3680
Author(s):  
K. Kimani ◽  
M. Njiraine
Keyword(s):  
Cognitive Radio ◽  
Spectrum Sensing ◽  
Spectrum Sharing ◽  
Limited Resource ◽  
Radio Spectrum ◽  
Spectrum Utilization ◽  
Transmission Parameters ◽  
Wireless Users ◽  
Radio Technology ◽  
Cognitive Radio Technology

Frequency spectrum is a limited resource and the increasing demand caused by emerging services, augmented number of wireless users along with the demand for high-quality multimedia applications have resulted in the overcrowding of the allocated spectrum bands. The overcrowding of spectrum bands has exacerbated by the current spectrum licensing policy which has emerged as a bottleneck to efficient spectrum utilization, due to its inflexibility, resulting in most of the licensed spectrum being severely under-utilized. However, the problem of scarcity of spectrum bands and the inefficient utilization of the already allocated radio spectrum can be smartly addressed through spectrum sharing by enabling opportunistic usage of the underutilized frequency bands. One of the most exciting ways of spectrum sharing is cognitive radio technology which allows a wireless node to sense the environment, detect the network changes, and then make intelligent decisions by dynamically changing its reception or transmission parameters to communicate while ensuring that no interference is affected to the licensed users. It thus improves the spectrum utilization by reusing the unused or underutilized spectrum owned by the incumbent systems (primary systems). In this paper, a comprehensive survey and review of recent research about the advances in cognitive radio technology will be carried out. We will also evaluate the various spectrum sensing techniques in a cognitive radio network in the UHF/VHF bands allocated for TV broadcasting.

scholarly journals A Novel Binary Slime Mould Algorithm with AU Strategy for Cognitive Radio Spectrum Allocation

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Ling Li ◽  
Tien-Szu Pan ◽  
Xiao-Xue Sun ◽  
Shu-Chuan Chu ◽  
Jeng-Shyang Pan
Keyword(s):  
Cognitive Radio ◽  
Radio Spectrum ◽  
Spectrum Allocation ◽  
The Novel ◽  
Allocation Scheme ◽  
Network Resources ◽  
Allocation Model ◽  
Slime Mould ◽  
Radio Technology ◽  
Cognitive Radio Technology

AbstractSpectrum has now become a scarce resource due to the continuous development of wireless communication technology. Cognitive radio technology is considered to be a new method to solve the shortage of spectrum resources. The spectrum allocation model of cognitive radio can effectively avoid the waste of spectrum resources. A novel binary version of slime mould algorithm is proposed for the spectrum allocation model to solve the spectrum allocation scheme. In addition, adding unselected factors strategy can make the approach find a better solution. Compared with other algorithms, the novel binary slime mould algorithm and the strategy of adding unselected factors proposed in this paper have a good performance in spectrum allocation. The resulting spectrum allocation scheme can achieve efficient use of network resources.

scholarly journals Cognitive Radio Technology Based Spectrum Allocation for D2d-U Communication

2019 ◽  
Vol 9 (1S3) ◽  
pp. 520-522
Keyword(s):  
Cognitive Radio ◽  
Data Transmission ◽  
Heterogeneous Network ◽  
Geographical Area ◽  
Radio Technology ◽  
Sum Rate ◽  
Simulation Results ◽  
Cognitive Radio Technology ◽  
Scheduling Technique ◽  
Unlicensed Band

In this paper, a heterogeneous network consists of Device to Device (D2D) communication users and Cognitive Radio (CR) network users are considered. D2D users can communicate through licensed band or unlicensed band. Unlicensed band accessing D2D users are called as D2D-U users. CR users are using the unlicensed band for data transmission and they have the capability to access the licensed band when it is not in use. This proposed system is considering D2D-U users and Wi-Fi users in a local geographical area and applying scheduling technique for both to access the licensed band without affecting the licensed user’s transmission. The proposed system evaluated the data sum rate against number of user. The simulation results are generated and discussed

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