考虑信道选择的认知无线网络多频带传输物理层安全

Akinari Ida, T. Fujii
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引用次数: 1

摘要

本文在频谱共享的认知无线网络环境下,考虑了一种基于物理层的保密传输方案,该方案采用动态功率分配和信道选择的多波段发射机。在这里,我们应用了一种物理层安全,利用多波段发射器在多个频率通道上分发每个接收器的每个机密消息,并减少泄漏。此外,我们还采用了一种基于每个用户的信道条件和主要用途的信道选择方法来提高保密能力。通过计算机仿真,我们可以验证,与主用户共存环境下的单波段传输方法相比,所提出的方法在防窃听的保密能力方面提高了性能。
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Physical layer security using multi-band transmission considering channel selection for cognitive radio networks
In this paper, we consider a secrecy transmission scheme based on physical layer, employing multi-band transmitters with dynamic power allocations and channel selections under the circumstance of spectrum sharing cognitive radio networks. Here, we apply a physical layer security utilizing multi-band transmitter for distributing each confidential message of each receiver over multiple frequency channels and for decreasing leakage. Moreover, we aim to improve the secrecy capacity by using a channel selection method based on the channel condition of each user and primary usage. By using computer simulations, we could verify that the proposed method improves the performance in terms of secrecy capacity against eavesdropping compared with methods using single-band transmission under primary user coexisting environment.
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