Results 151 to 160 of about 18,041 (194)

Achievable Ergodic Secrecy Rate in Bursty Interference Channels With Opportunistic User Scheduling

IEEE Transactions on Communications, 2019
This paper studies secure transmissions in a bursty interference channel constructed by opportunistic user scheduling. To improve the physical layer security, we propose a signal-to-noise-plus-interference ratio (SINR) based opportunistic transmission scheme and mathematically analyze the ergodic secrecy rate per transmitter-receiver pair.
Jae-Hwan Lee, Hyung-Myung Kim, Wan Choi   +2 more
exaly   +4 more sources

On the Ergodic Secrecy Rate of Cooperative Decode-and-Forward Relay Networks

2014 IEEE Military Communications Conference, 2014
In this article, we develop a unified analytical framework for investigation of the ergodic secrecy rates of cooperative decode-and-forward relay networks in a myriad of fading environments. We utilized an exponential-type integral representation for the logarithmic function to derive an approximate expression for the ergodic secrecy rates of ...
Eyidayo Adebola, Annamalai Annamalai
exaly   +4 more sources

On Ergodic Secrecy Rate for Gaussian MISO Wiretap Channels

IEEE Transactions on Wireless Communications, 2011
A Gaussian multiple-input single-output (MISO) wiretap channel model is considered, where there exists a transmitter equipped with multiple antennas, a legitimate receiver and an eavesdropper, each equipped with a single antenna. We study the problem of finding the optimal input covariance that maximizes the ergodic secrecy rate subject to a power ...
Jiangyuan Li, Athina P Petropulu
exaly   +4 more sources

Ergodic Secrecy Sum-Rate for Downlink Multiuser MIMO Systems With Limited CSI Feedback

IEEE Communications Letters, 2014
This paper investigates the ergodic secrecy sum-rate for the downlink multiuser MIMO system with independent confidential messages, each of which is intended for one of the users and should keep secret from others. We adopt zero-forcing beamforming with limited channel state information (CSI) feedback at the transmitter, and derive the closed-form ...
Xiaofeng Tao, Jin Xu
exaly   +4 more sources

Ergodic Secrecy Rate of $K$-User MISO Broadcast Channel With Improved Random Beamforming

IEEE Transactions on Vehicular Technology, 2019
In this paper, we study the secrecy performance of a $K$ -user multi-input single-output (MISO) broadcast channel with random beamforming (RB), where the transmitter is equipped with $N$ antennas, and the eavesdropper has $N_e$ antennas.
Ye Fan, Xuewen Liao, Zhenzhen Gao
exaly   +4 more sources

Ergodic Secrecy Rate Analysis of Ultra-Dense Networks with Multiple Antennas

ICC 2021 - IEEE International Conference on Communications, 2021
Ultra-Dense Networks (UDNs), where Small Cells (SCs) will be deployed in very high densities, are considered as a leading promising technology in 5G and beyond. Such SCs being equipped with multiple antennas can further enhance the achievable performance.
Mohammed Elbayoumi, Walaa Hamouda, Amr Youssef   +2 more
semanticscholar   +3 more sources

Ergodic Secrecy Sum-Rate for Multiuser Downlink Transmission via Regularized Channel Inversion: Large System Analysis

IEEE Communications Letters, 2014
In this letter, we study the ergodic secrecy sum-rate of a multiuser downlink system achievable by using the regularized zero-forcing precoding based on imperfect channel estimation. The channels between the base station and users are modeled as fading channels with different spatial correlations and line-of-sight components.
Chau Yuen, Chao-Kai Wen, Shi Jin
exaly   +4 more sources

On the Ergodic Capacity and Ergodic Secrecy Rate of Rate Splitting Aided Wireless Multiple Access Channel With Correlated Channel Coefficients

2025 13th Iran Workshop on Communication and Information Theory (IWCIT)
Rate-splitting multiple access (RSMA) is a promising technology for future wireless networks. In the present paper, a two-user RSMA-aided multiple access channel (MAC) in the presence and the absence of one eavesdropper with correlated Rayleigh fading ...
Jalil Etminan, Ghosheh Abed Hodtani
exaly   +4 more sources

Ergodic Secrecy Rate of Randomly Deployed Cellular Networks Enhanced by Artificial Noise

2017 IEEE Wireless Communications and Networking Conference (WCNC), 2017
As the future cellular networks tend to be randomly deployed and equipped with more antennas, we study the enhanced secrecy rate of multiple- input multiple-output (MIMO) systems with a stochastic geometry approach. To avoid intractable computational complexity and to have a deep insight into the security performance of such networks, we derive a ...
Hui Chen, Xiaofeng Tao, Na Li, Zhu Han
semanticscholar   +3 more sources

Ergodic Secrecy Rate of K -user MISO Broadcast Channel with Improved Random Beamforming

2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
In this paper, we study the secrecy performance of multiple-input single-output (MISO) wiretap channel with random beamforming (RB), where the eavesdropper is equipped with multiple antennas. In traditional RB schemes, the transmitter utilizes only one antenna to emit information signal and adopts the rest antennas to produce a random beamforming ...
Ye Fan, Xuewen Liao, Zhenzhen Gao
semanticscholar   +3 more sources