Joint Power Allocation at the Base Station and the Relay for Untrusted Relay Cooperation OFDMA Network
Joint Authors
Source
International Journal of Antennas and Propagation
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-21
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
The secure communication that multiple OFDMA-based cell-edge mobile stations (MS) can only transmit confidential messages to base station (BS) through an untrusted intermediate relay (UR) is discussed.
Specifically, with the destination-based jamming (DBJ) scheme and fixed MS transmission power assumption, our focus is on the joint BS and US power allocation to maximize system sum secrecy rate.
Wefirst analyze the challenges in solving this problem.
The result indicates that our nonconvex joint power allocation is equivalent to a joint MS access control and power allocation.
Then, by problem relaxation and the alternating optimization approach, two suboptimal joint MS access control and power allocation algorithms are proposed.
These algorithms alternatively solve the subproblem of joint BS and UR power allocation and the subproblem of MS selection until system sum secrecy rate is nonincreasing.
In addition, the convergence and computational complexity of the proposed algorithms are analyzed.
Finally, simulations results are presented to demonstrate the performance of our proposed algorithms.
American Psychological Association (APA)
Jiang, Weiheng& Feng, Wenjiang. 2015. Joint Power Allocation at the Base Station and the Relay for Untrusted Relay Cooperation OFDMA Network. International Journal of Antennas and Propagation،Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1065106
Modern Language Association (MLA)
Jiang, Weiheng& Feng, Wenjiang. Joint Power Allocation at the Base Station and the Relay for Untrusted Relay Cooperation OFDMA Network. International Journal of Antennas and Propagation No. 2015 (2015), pp.1-15.
https://search.emarefa.net/detail/BIM-1065106
American Medical Association (AMA)
Jiang, Weiheng& Feng, Wenjiang. Joint Power Allocation at the Base Station and the Relay for Untrusted Relay Cooperation OFDMA Network. International Journal of Antennas and Propagation. 2015. Vol. 2015, no. 2015, pp.1-15.
https://search.emarefa.net/detail/BIM-1065106
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1065106