Name
Title | ||
|---|---|---|
Primary Secrecy Is Achievable: Optimal Secrecy Rate in Overlay CRNs with an Energy Harvesting Secondary Transmitter |
Abstract | ||
|---|---|---|
To tackle the challenging secrecy communication problem in energy harvesting cognitive radio networks, this paper considers an overlay system with one energy harvesting secondary user (SU) to assist primary transmission under the assumption that the primary channel at primary receiver is worse than the eavesdropper. Under such scenario, we optimize the secrecy rate of the PU transmitter by jointly investigating energy harvesting slot, cooperative transmission slot and so on. Given the transmission rate requirement between SUs, the optimization problem is formulated as a mixed integer non-linear (MINLP) program. Due to the special features, we design a polynomial time algorithm SRMA to optimally solve this problem. The algorithm computes the lower bound and upper bound of the transmission power in a secondary transmitter, which are relative with the QoS requirement and energy harvesting parameters. Then SRMA determines its optimal transmission power by iteratively searching between two bounds. Numerical results demonstrate that the primary secrecy rate grows with the increasing energy save ratio and optimal energy save ratio is inversely proportional to the energy harvesting rate. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/ICCCN.2015.7288450 | 2015 24th International Conference on Computer Communication and Networks (ICCCN) |
Keywords | Field | DocType |
secrecy communication problem,energy harvesting cognitive radio networks,overlay system,energy harvesting secondary user,primary transmission,primary channel,primary receiver,eavesdropper,PU transmitter,energy harvesting slot,cooperative transmission slot,transmission rate requirement,mixed integer nonlinear program,MINLP program,polynomial time algorithm,SRMA,QoS requirement,optimal transmission power,primary secrecy rate,optimal energy save ratio | Transmitter,Mathematical optimization,Primary channel,Computer science,Simulation,Upper and lower bounds,Energy harvesting,Quality of service,Computer network,Time complexity,Optimization problem,Cognitive radio | Conference |
ISSN | Citations | PageRank |
1095-2055 | 2 | 0.37 |
References | Authors | |
16 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Long Chen | 1 | 85 | 16.11 |
| Liusheng Huang | 2 | 1082 | 123.52 |
| Hongli Xu | 3 | 502 | 85.92 |
| Chenkai Yang | 4 | 4 | 3.10 |
| Zehao Sun | 5 | 19 | 4.07 |
| Xinglong Wang | 6 | 57 | 6.80 |