9 papers
On Robustness of Massive MIMO Systems Against Passive Eavesdropping under Antenna Selection
Ali Bereyhi, Saba Asaad, Ralf R. Müller +2
In massive MIMO wiretap settings, the base station can significantly suppress eavesdroppers by narrow beamforming toward legitimate terminals. Numerical investigations show that by…
Optimal Transmit Antenna Selection for Massive MIMO Wiretap Channels
Saba Asaad, Ali Bereyhi, Amir M. Rabiei +2
In this paper, we study the impacts of transmit antenna selection on the secrecy performance of massive MIMO systems. We consider a wiretap setting in which a fixed number of trans…
Optimal Number of Transmit Antennas for Secrecy Enhancement in Massive MIMOME Channels
Saba Asaad, Ali Bereyhi, Ralf R. Müller +2
This paper studies the impact of transmit antenna selection on the secrecy performance of massive MIMO wiretap channels. We consider a scenario in which a multi-antenna transmitter…
Asymptotics of Transmit Antenna Selection: Impact of Multiple Receive Antennas
Saba Asaad, Ali Bereyhi, Ralf R. Müller +1
Consider a fading Gaussian MIMO channel with transmit and receive antennas. The transmitter selects antennas corresponding to the stron…
Asymptotic Performance Analysis of Spatially Reconfigurable Antenna Arrays
Saba Asaad, Ali Bereyhi, Mohammad Ali Sedaghat +2
A spatially reconfigurable antenna arrays consists of an antenna array of finite length and fixed geometry which is displaced within a given area. Using these reconfigurable compon…
Exact Throughput Analysis of Random CoopMAC Networks in the Presence of Shadowing
Homa Nikbakht, Amir Masoud Rabiei, Vahid Shah-Mansouri
The throughput performance of a random cooperative medium access control (CoopMAC) network in the presence of shadowing is considered. The nodes are assumed to be randomly distribu…
Joint Throughput Maximization and Power Control in Poisson CoopMAC Networks
Masoumeh Sadeghi, Homa Nikbakht, Amir Masoud Rabiei +1
A cooperative medium access control (CoopMAC) network with randomly distributed helpers is considered. We introduce a new helper selection scheme which maximizes the average throug…
A Fair Relay Selection Scheme for a DF Cooperative Network With Spatially Random Relays
Masoumeh Sadeghi, Amirmasoud Rabiei
A new, fair relay selection scheme is proposed for a dual-hop decode-and-forward network with randomly-distributed relays. Most of the reported works in the literature achieve fair…
A New Approach for Helper Selection and Performance Analysis in Poisson CoopMAC Networks
Homa Nikbakht, Amir Masoud Rabiei, Vahid Shah-Mansouri
The cooperative medium access control (CoopMAC) protocol in the presence of randomly-distributed nodes and shadowing is considered. The nodes are assumed to be distributed accordin…