| 1. |
- Lin, P. -H, et al.
(författare)
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Interference neutralization vs clean relaying in cognitive radio networks with secrecy
- 2015
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Ingår i: Proceedings of the 12th International Conference on Mobile and Ubiquitous Systems. - : IEEE conference proceedings. - 9781631900723 ; , s. 240-246
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Konferensbidrag (refereegranskat)abstract
- In this paper we study cognitive radio networks with secrecy constraints on the primary transmission. In particular we consider several transmission schemes for the secondary transmitter, namely interference neutralization (IN) and cooperative jamming with and without clean relaying (CR). We derive and analyze the achievable secondary rate performance of the schemes. Furthermore we thoroughly investigate the advantages and shortcomings of these schemes through numerical simulations in a geometric model where we highlight the impact of the users' locations and show the important difference in all schemes depending on the topology. Our results show that the secondary transmitter can successfully adapt its transmission scheme (and parameters), i.e., either IN or CR, depending on its location to maximize its rate while insuring perfect secrecy of the primary transmission.
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| 2. |
- Lin, P. -H, et al.
(författare)
-
Multi-phase transmission for secure cognitive radio networks
- 2015
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Ingår i: 2015 IEEE International Conference on Communication Workshop, ICCW 2015. - : IEEE conference proceedings. - 9781467363051 ; , s. 475-479
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Konferensbidrag (refereegranskat)abstract
- In this paper we study secure communications with weak secrecy constraint in a cognitive radio channel, where the secondary receiver is treated as a potential eavesdropper with respect to the primary transmission. The primary's secrecy rate and the transmission scheme should be kept unchanged whether the secondary users transmit or not. We derive the achievable rate of the discrete memoryless multi-phase cognitive channel. To against the information leakage due to the use of Gelfand-Pinsker coding at the secondary transmitter, we derive the corresponding constraints to guarantee the primary's secure transmission. We then specialize the results to the additive white Gaussian noise channels. Numerical results show the advantages of using the proposed multiple-phase transmission scheme over the traditional ones without the additional phase.
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