دانلود رایگان مقاله انگلیسی کرانه ها به عنوان یک تکنیک ارتقاء برای امنیت لایه فیزیکی - IEEE 2019

Abstract

In this paper, we study the receiver performance with physical layer security in a Poisson field of interferers. We compare the performance in two deployment scenarios: (i) the receiver is located at the corner of a quadrant, (ii) the receiver is located in the infinite plane. When the channel state information (CSI) of the eavesdropper is not available at the transmitter, we calculate the probability of secure connectivity using the Wyner coding scheme, and we show that hiding the receiver at the corner is beneficial at high rates of the transmitted codewords and detrimental at low transmission rates. When the CSI is available, we show that the average secrecy capacity is higher when the receiver is located at the corner, even if the intensity of interferers in this case is four times higher than the intensity of interferers in the bulk. Therefore boundaries can also be used as a secrecy enhancement technique for high data rate applications.

CONCLUSIONS

In this paper, we have calculated the probability of secure connectivity and the average secrecy capacity in a Poisson field of interferers. The receiver performance has been assessed in the infinite plane and also at the corner of a quadrant, and the results have been compared. The analysis shows that hiding the receiver at the corner can provide secrecy enhancement for high dara rate applications. Exposing the receiver at less interference than the eavesdropper is beneficial for physical layer security, even if the boundaries enhance the spatial correlation of interference. On the other hand, for low-rate applications, the impact of boundaries is detrimental because the interference level is reduced overall, and the eavesdropper can mostly decode the low-rate transmissions. In that case, applying further secrecy enhancement techniques, e.g., transmission of jamming signals could be of use to increase the interference level at the boundary. Studying the performance of secrecy enhancement techniques over finite areas, also with more complex geometries, is a direction for future.