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Cooperative Cognitive Radio NetworkingOrthogonal Signaling Enabled Cooperative Cognitive Radio Networking

Cooperative Cognitive Radio Networking: Orthogonal Signaling Enabled Cooperative Cognitive Radio... [In this chapter, a cross-layer two-phase time division multiple access (TDMA) cooperation framework for primary users (PUs) and secondary user (SUs) in a cooperative cognitive radio network (CCRN) is proposed and analyzed. Specifically, the cooperation framework in which the SU uses the two-dimensional orthogonal modulation for leveraging two degrees of freedom to relay the PU’s packet and transmit its own data orthogonally in the same time slot is firstly explored. To evaluate the cooperation performance of the proposed framework, a weighted sum throughput maximization problem is then formulated. With the help of primal-dual sub-gradient algorithms, the optimization problem is solved to obtain closed-form solutions to the optimal powers and allocation of the PU and the SU for both the amplify-and-forward (AF) and decode-and-forward (DF) relaying modes. Cooperative regions based on channel state information are given and discussed, and a cross-layer multi-user coordination for a PU to select a relaying SU for both AF and DF are presented. Extensive simulation results validate the theoretical analysis and show that the proposed two-phase TDMA cooperation framework can achieve mutual benefit in the CCRN.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Cooperative Cognitive Radio NetworkingOrthogonal Signaling Enabled Cooperative Cognitive Radio Networking

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Publisher
Springer International Publishing
Copyright
© The Author(s) 2016
ISBN
978-3-319-32879-9
Pages
19 –39
DOI
10.1007/978-3-319-32881-2_2
Publisher site
See Chapter on Publisher Site

Abstract

[In this chapter, a cross-layer two-phase time division multiple access (TDMA) cooperation framework for primary users (PUs) and secondary user (SUs) in a cooperative cognitive radio network (CCRN) is proposed and analyzed. Specifically, the cooperation framework in which the SU uses the two-dimensional orthogonal modulation for leveraging two degrees of freedom to relay the PU’s packet and transmit its own data orthogonally in the same time slot is firstly explored. To evaluate the cooperation performance of the proposed framework, a weighted sum throughput maximization problem is then formulated. With the help of primal-dual sub-gradient algorithms, the optimization problem is solved to obtain closed-form solutions to the optimal powers and allocation of the PU and the SU for both the amplify-and-forward (AF) and decode-and-forward (DF) relaying modes. Cooperative regions based on channel state information are given and discussed, and a cross-layer multi-user coordination for a PU to select a relaying SU for both AF and DF are presented. Extensive simulation results validate the theoretical analysis and show that the proposed two-phase TDMA cooperation framework can achieve mutual benefit in the CCRN.]

Published: May 20, 2016

Keywords: Channel State Information; Relay Selection; Optimal Power Allocation; Secondary Network; Achievable Throughput

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