Abstract
| Original language | English |
|---|---|
| Title of host publication | Wireless Communications & Signal Processing (WCSP), 2015 International Conference on |
| Publisher | Institute of Electrical and Electronic Engineers IEEE |
| Pages | 1-5 |
| ISBN (Electronic) | 978-1-4673-7687-7, 978-1-4673-7686-0 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A4 Article in a conference publication |
| Event | 7th International Conference on Wireless Communications and Signal Processing, WCSP 2015 - Nanjing, China Duration: 15 Oct 2015 → 17 Oct 2015 |
Conference
| Conference | 7th International Conference on Wireless Communications and Signal Processing, WCSP 2015 |
|---|---|
| Abbreviated title | WCSP 2015 |
| Country | China |
| City | Nanjing |
| Period | 15/10/15 → 17/10/15 |
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Keywords
- array signal processing
- interference constraints
- optimization
- cognitive radio
- communication system security
- antennas
Cite this
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Secure beamforming for cognitive radio networks with artificial noise. / Wu, Yanan; Chen, Xiaoming; Chen, Xianfu.
Wireless Communications & Signal Processing (WCSP), 2015 International Conference on. Institute of Electrical and Electronic Engineers IEEE, 2015. p. 1-5.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - Secure beamforming for cognitive radio networks with artificial noise
AU - Wu, Yanan
AU - Chen, Xiaoming
AU - Chen, Xianfu
N1 - SDA: MIP: CognitComms4CritInfras Project : 104139
PY - 2015
Y1 - 2015
N2 - In this paper, we address the secrecy problem for a cognitive radio network (CRN) by using physical layer security (PHY-security) technology. In order to effectively enhance wireless security, we propose to adopt artificial noise (AN) to impair the quality of the interception signal. For such a secure CRN, it is a challenging issue to design the beams for both the desired signal and the AN, so as to maximize the secrecy rate while satisfying the interference constraint to primary user (PU). Since the formulated problem is nonconvex, we adopt an alternative optimization method combined with one-dimensional linear searching to design optimal secure beams. Furthermore, we propose a low-complexity secure beamforming scheme by confining the AN in the orthogonal space of the legitimate channel. It is found that the low-complex scheme can asymptotically approach the same performance as the optimal one, when the number of antennas is large. Finally, simulation results validate the effectiveness of the two proposed schemes.
AB - In this paper, we address the secrecy problem for a cognitive radio network (CRN) by using physical layer security (PHY-security) technology. In order to effectively enhance wireless security, we propose to adopt artificial noise (AN) to impair the quality of the interception signal. For such a secure CRN, it is a challenging issue to design the beams for both the desired signal and the AN, so as to maximize the secrecy rate while satisfying the interference constraint to primary user (PU). Since the formulated problem is nonconvex, we adopt an alternative optimization method combined with one-dimensional linear searching to design optimal secure beams. Furthermore, we propose a low-complexity secure beamforming scheme by confining the AN in the orthogonal space of the legitimate channel. It is found that the low-complex scheme can asymptotically approach the same performance as the optimal one, when the number of antennas is large. Finally, simulation results validate the effectiveness of the two proposed schemes.
KW - array signal processing
KW - interference constraints
KW - optimization
KW - cognitive radio
KW - communication system security
KW - antennas
U2 - 10.1109/WCSP.2015.7341139
DO - 10.1109/WCSP.2015.7341139
M3 - Conference article in proceedings
SP - 1
EP - 5
BT - Wireless Communications & Signal Processing (WCSP), 2015 International Conference on
PB - Institute of Electrical and Electronic Engineers IEEE
ER -