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RISS 인기검색어
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- 저자 : Adão Silva (검색결과 2 건)
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On the secrecy performance of RIS-enabled wireless communications over Nakagami-m fading channels
Ashutosh K. Yadav,Suneel Yadav,Anshul Pandey,Adão Silva 한국통신학회 2023 ICT Express Vol.9 No.3
This paper examines the secrecy performance of reconfigurable intelligent surface aided wireless communication systems. Specifically, we derive the secrecy outage probability (SOP), intercept probability, probability of non-zero secrecy capacity, and ergodic secrecy capacity (ESC) expressions over Nakagami-m fading channels. We further evaluate the asymptotic SOP expressions to get some insights into the secrecy diversity order under two scenarios of interest; (1) when the signal-to-noise ratio approaches infinity, and (2) when the main-to-eavesdropper ratio tends to infinity. Also, we analytically show the effect of reflecting element density on the ESC performance. The numerical and simulation studies verify our analytical findings.
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New look at secure performance of massive MIMO with low-resolution DACs
Anh-Tu Le,Dinh-Thuan Do,Nhu-Ngoc Dao,Nhan Duc Nguyen,Adão Silva 한국통신학회 2023 ICT Express Vol.9 No.4
Since the requirement of secure transmission for massive multiple-input–multiple-output (mIMO) is high, we consider a secure massive MIMO system in presence of multiple digital to analog converters (DACs). We deal with complicated performance analysis of the proposed system including a base station, a legitimate user, and an eavesdropper while these nodes are equipped with multiple antennas. In particular, we intend to present the closed-form expression for the ergodic secrecy rate of the system and also calculate the optimal power allocation for better performance gain. The simulation analysis shows that quantization bits, transmit signal to noise ratio at the base station, and power allocation plays a major role in enhancing the performance of the system.
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