secondary users (SUs)
Optimal spectrum access and power control of secondary users in cognitive radio networks
... mobile users makes spectrum shortage more and more serious ...primary users (PUs). In CRNs, secondary users (SUs) are able to access the spectrum of PUs and transmit signals without causing ...
15
Resource allocation for secondary users with chance constraints based on primary links control feedback information
... for secondary users to share spectrum in a cognitive radio ...network. Secondary users can exploit the spectrum owned by primary links while their interference levels can exceed the given ...
13
Securing Collaborative Spectrum Sensing against Untrustworthy Secondary Users in Cognitive Radio Networks
... schemes, secondary users are usually assumed to report their sensing information ...untrustworthy secondary users in cognitive radio ...10 secondary users, with the primary user ...
15
Transient Analysis of Interrupted Secondary Users With the Provision of Finite Buffer
... Cognitive Radio Networks (CRN) deals with the Spectrum efficient usage issues in the real world. The buffering and switching scheme for admission control were discussed [13] for opportunistic usage of the spectrum but ...
18
Channel Access Scheduling for Fair Distribution of Channels to Secondary users in a CRN
... As already mentioned, a CRN consists of two categories of nodes or users namely Primary and Secondary. These users have heterogeneous network and service requirements. While it is the PU that have ...
5
Spectrum Sensing and Allocation In Cognitive Radio Networks
... and Secondary users and each spectrum is characterized by jointly considering primary user activity and spectrum sensing ...cognitive users without affecting the Primary ...satisfy secondary ...
7
Multiple level power allocation strategy for secondary users in cognitive radio networks
... Figure 3 shows the average secondary achievable rate. In the low P ¯ region, the proposed strategy and the conven- tional ones have the same rates. However, when P ¯ is high, the proposed strategy achieves much ...
7
A Novel Multi-radio Rendezvous Algorithm for Cognitive Radio Networks
... environments, Secondary Users (SUs) are allowed to access licensed Primary Users (PU) spectra provided that they do not interfere with PU network ...
10
Sensing Based Spectrum Sharing Using Optimal Power Allocation Scheme in Cognitive Radio Network
... primary users (PUs), and CRs are referred to as secondary users ...the secondary network but also guarantees the QoS of the primary ...
6
Cognitive Radio Wireless Smart Sense Technology
... its users without causing harmful interference to the licensed ...capability, secondary users can identify the best available ...enables secondary users to sense which portion of the ...
11
Power Allocation with Random Removal Scheme in Cognitive Radio System
... CR-enabled Secondary Users (SUs) are able to sense the available spectrum and share with Primary Users (PUs) ...a secondary spectrum utilization factor which will decide that which SU can ...
6
A Novel Approach To Energy Efficient Mimo Cognitive Radio Networks
... unlicensed users. This will allow unlicensed users to use the empty spectrum, provided they cause no interference to licensed ...the secondary unlicensed users coexist with the primary ...
6
Throughput-Optimal Queue Length Based CSMA/CA Algorithm for Cognitive Radio Networks
... or secondary users to opportunistically access licensed spectra to improve the overall utilization of wireless resources and address the problem of spectrum ...
6
Survey On Energy Efficient Low Power Spectrum Sensing Techniques In Cognitive Radio
... satisfy secondary users' (SUs'), quality of service (QoS) requirements, without causing harmful interference to licensed or primary users ...Primary users and helps to reorganize the unused ...
8
Connectivity-based Performance Evaluation for Mobile Cognitive Radio Network
... primary users [1-4]. In cognitive radio network, there are two kinds of users: primary users (PUs) and secondary users ...licensed users with high priority in the utilization of ...
7
A Novel Approach in Hidden Markov Model for Spectrum Sensing On Cognitive Radio
... ShengliXie and et al[5] proposed new parallel spectrum sensing. In this scheme, several secondary users (SUs) are optimally selected to perform sensing. During a sensing period, each of the selected SUs ...
7
A Survey of Cognitive Radio Network Techniques and Architecture
... allowed secondary users to utilize the licensed band when it is not in use and named it as Cognitive ...the secondary users without creating any harm to authorized ...
6
Analysis of Fault Tolerant Cognitive Radio Ne...
... the secondary users need to detect the presence of primary users in a licensed spectrum and quit the frequency band as quickly as possible if the corresponding primary radio emerges in order to avoid ...
9
Co-Operative Spectrum Sensing In Cognitive Radio Network in ISM Band
... unlicensed users (i.e. Secondary users) by utilizing the unused spectrum in the licensed users ...the secondary users which identifies the unused spectrum through the spectrum ...
7
Cognitive Radio Implementation Issues in Channel Sensing
... primary users may be high and sometimes low or ...primary users, the appropriate spectrum sensing requirements are ...the secondary user information is not lost when the primary user ...
5