Secondary User (SU)
Cognitive Radio Spectrum Sensing and Secondary User Allocation
... where secondary users (SU) can randomly use the licensed spectrum if it is free (the primary user is idle) without cause interference to the primary user ...the secondary user ...
7
Secondary user relations in emerging mobile computing environments
... of user relations than is usually considered in information systems research is ...end user relations with a focus on the ‘secondary user’, those who are not intended to interact directly with ...
17
Balancing outage performance of primary user and secondary user by relay assisted primary transmission
... The rest of this paper is organized as follows. In Section 2, a system model is introduced, where a second- ary system and a relay cooperate with a primary system together. In Section 3, the transmission process of the ...
12
Survey On Energy Efficient Low Power Spectrum Sensing Techniques In Cognitive Radio
... to secondary user ...compound Secondary user sense the common signal in a synchronized manner, has been more better than sole Secondary User sensing [4]-[13] in the realistic ...
8
Performance Analysis of Hybrid MAC Protocol for Cognitive Radio Networks
... allows secondary users (SU) to operate in the presence of the primary users (PU) and the OPNET simulation and modelling software has been used to model the performance of the ...primary user from ...
11
A FUZZY APPROACH FOR REPRESENTATIVE NODE SELECTION IN CROSS LAYER TCP
... (Legitimate Secondary User) from accessing the spectrum ...(Selfish Secondary User) should be identified and detected in order to improve the spectrum usage and performance in the ...(primary ...
10
A Learning Method for Secondary Users to minimize the effect of Jamming in Cognitive Radio Wireless Sensor Networks State of the art in CR WSN security
... a secondary user (SU) needs to be constantly aware of the presence of the license owner on the spectrum, we keep track of two probabilities p t 01, the probability of the channel changing from an ...
8
Position Verification and Identification of Primary User Emulation (PUE) Attack in Cognitive Radio Network
... of user primary user (PU), those who are licensed user and secondary user (SU), those who are unlicensed ...Primary user has the first priority to access the spectrum. ...
17
2013 icufn outage
... a secondary user (SU) is ...the SU can adjust its transmit power to satisfy the outage probability constraint of multiple PUs and its own transmit power constraint for ...the SU on the ...
5
An enhanced sum rate in the cluster based cognitive radio relay network using the sequential approach for the future Internet of Things
... a secondary user (SU) supports the spectrum sensing capability in a cognitive radio net- work (CRN), they can discover and select frequency bands that are most suitable for ...of SU access is ...
27
A NOVEL SCHEME FOR JOINT SPECTRUM SENSING AND POWER ALLOCATION FOR COGNITIVE RADIO NETWORKS.Ms.Preeti singh1, Prof.sandeep agrawal2
... the secondary transmitter (ST) and then propose a joint spectrum sensing and power allocation (JSS-PA) scheme to improve the SE of the CR ...the secondary user (SU) such that the SE is ...
8
Energy Detection Based Periodic Dynamic Spectrum Sensing Using Cognitive Radio
... to secondary user instantly. If primary user in that vacant slot becomes active again, the secondary user is deactivated immediately and reallocated to other vacant slot if it is ...
6
Cognitive Radio New Dimension in Wireless Communication – State of Art
... The spectrum utilization rate increases with DSA and use of licensed spectrum, but it impose treats to security of communication system that implies the requirement of new security protocols and authentication ...
10
A Survey on Dynamic Spectrum Access via Cognitive Radio: Taxonomy, Requirements, and Benefits
... and secondary users is allowed. However, this secondary spectrum access strategy protects the primary users by enforcing a spectral mask on the secondary signals so that the interference generated by ...
16
Hybrid Relaying Protocol for Joint Power and Subcarrier Allocation for OFDM Based Cognitive Radio Networks
... In order to avoid interference imposed by secondary user on primary user, a Hybrid Relaying Protocol for Joint Power and Subcarrier Allocation for Orthogonal Frequency Division Multiplex[r] ...
12
Review Paper on Future Trends of Spectrum Sen...
... primary user provides secondary users with all information regarding the occupancy of the spectrum and about the unused spectrum so that the secondary users make use of that unused spectrum and keep ...
5
A utility based approach for secondary spectrum sharing
... The contribution of the present paper is: (1) a utility- based formulation of spectrum sharing among secondary users is presented. The formulation accounts for the presence of static primary users, and provides a ...
11
FINDING AN EMULATION ATTACK IN COGNITIVE RADIO
... Primary user is detected in its spectrum band immediately vacate that band and switch to a vacant one ―vertical spectrum sharing‖ when another ...detected secondary user―horizontal spectrum sharing‖ ...
6
Spectrum Utilization in an Efficient Manner Using Overlay and Underlay of Cognitive Radio
... and secondary users are considered to achieve spectrum ...the secondary user uses an overlay waveform to harness unused spectrum holes (white areas) and avoid interference to the primary ...
9
Analysis of Detection Performance in Cognitive Radio Using Cooperative Spectrum Sensing Technique with Different Channel
... networks, secondary user can sense the spectrum and make decision for presence of primary ...multiple secondary users share their spectrum sensing ...
10