Resource Allocation for Secure Communication in Cooperative CR Networks
| Autor: | Hong Peng, Kecai Gu, Zhanghui Lu, Weidang Lu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
021110 strategic
defence & security studies business.industry Computer science Transmitter 0211 other engineering and technologies 020206 networking & telecommunications Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology law.invention Cognitive radio Secure communication Relay law 0202 electrical engineering electronic engineering information engineering Bandwidth (computing) Resource allocation business Computer network |
| Zdroj: | Lecture Notes in Electrical Engineering ISBN: 9789811065705 CSPS |
| DOI: | 10.1007/978-981-10-6571-2_143 |
| Popis: | This paper investigates joint resource allocation to provide information security in a five nodes CRNS system, which includes a primary transmitter (PT), a primary receiver (PR), a secondary transmitter (ST), a secondary receiver (SR) and an eavesdropper (E). To ensure the security of the information, PT and PR are allowed to use part of power to transmit artificial noise to confuse the eavesdropper. PT firstly transmits signal containing secrecy information and artificial noise by using all power and bandwidth resources. Then ST as a trusted relay accesses to the licensed bandwidth and allocates a fraction of bandwidth resources to forward primary information in decode-and-forward (DF) mode. As a reward, it can utilize the remaining bandwidth to transmit its own information simultaneously. We study joint optimization of the bandwidth, time and power allocation to maximize the secondary rate while satisfying the secrecy transmission rate requirements of PR. Numerical results demonstrate that our strategy can realize win-win result. |
| Databáze: | OpenAIRE |
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