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Reciprocally Benefited Spectrum Access Scheme With Joint Power and Subcarrier Allocation in a Software-Defined Network | IEEE Journals & Magazine | IEEE Xplore

Reciprocally Benefited Spectrum Access Scheme With Joint Power and Subcarrier Allocation in a Software-Defined Network


This is the flowchart of our scheme. When the primary system can successfully transmit its message through the direct link, the secondary system will not access the licen...

Abstract:

Aiming at realizing ubiquitous spectrum access and improving the spectrum efficiency in a software-defined network, in this paper, we adopt the concept of cognitive radio...Show More
Topic: Recent Advances in Software Defined Networking for 5G Networks

Abstract:

Aiming at realizing ubiquitous spectrum access and improving the spectrum efficiency in a software-defined network, in this paper, we adopt the concept of cognitive radio and propose a joint subcarrier and power allocation (JSPA) scheme for reciprocally benefited spectrum access with secondary users (SUs) cooperating with primary users (PUs). In our proposed JSPA scheme, SUs adopt the decode-and-forward relaying protocol to help PUs in a two-stage way. Meanwhile, a fraction of unallocated licensed spectrum is allocated for the secondary transmission in every stage. However, if the two-stage cooperation still cannot satisfy the PUs’ outage quality-of-service (QoS) requirement, SUs then switch to the access mode and entirely capture the licensed spectrum. Our proposed scheme is to maximize the average transmission rate of SUs through joint optimal subcarriers and power allocation under the constraint of PUs’ outage QoS requirement. The closed-form expressions about the outage probability and average transmission of both PUs and SUs are derived, and we prove the optimality of our scheme. Simulation results show that, compared with the conventional cognitive cooperation scheme, the average transmission rate of SUs is improved.
Topic: Recent Advances in Software Defined Networking for 5G Networks
This is the flowchart of our scheme. When the primary system can successfully transmit its message through the direct link, the secondary system will not access the licen...
Published in: IEEE Access ( Volume: 3)
Page(s): 1248 - 1259
Date of Publication: 03 August 2015
Electronic ISSN: 2169-3536

Funding Agency:


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