159 citations · 310 across the 12 of their papers we have counts for
12 papers
Low Complexity Symbol-Level Design for Linear Precoding Systems
Jevgenij Krivochiza, Ashkan Kalantari, Symeon Chatzinotas +1
The practical utilization of the symbol-level precoding in MIMO systems is challenging since the implementation of the sophisticated optimization algorithms must be done with reaso…
Symbol-level and Multicast Precoding for Multiuser Multiantenna Downlink: A Survey, Classification and Challenges
Maha Alodeh, Danilo Spano, Ashkan Kalantari +4
Precoding has been conventionally considered as an effective means of mitigating the interference and efficiently exploiting the available in the multiantenna downlink channel, whe…
Robust Cooperative Relay Beamforming
Behrad Mahboobi, Mehrdad Ardebilipour, Ashkan Kalantari +1
In this paper, the robust distributed relay beamforming problem is solved using the worst case approach, where the problem solution has been involved because of the effect of uncer…
-QAM Precoder Design for MIMO Directional Modulation Transceivers
Ashkan Kalantari, Christos Tsinos, Mojtaba Soltanalian +4
Spectrally efficient multi-antenna wireless communication systems are a key challenge as service demands continue to increase. At the same time, powering up radio access networks i…
Frequency of Arrival-based Interference Localization Using a Single Satellite
Ashkan Kalantari, Sina Maleki, Symeon Chatzinotas +1
Intentional and unintentional interferences are an increasing threat for the satellite communications industry. In this paper, we aim to localize an interference with unknown locat…
Directional Modulation via Symbol-Level Precoding: A Way to Enhance Security
Ashkan Kalantari, Mojtaba Soltanalian, Sina Maleki +2
Wireless communication provides a wide coverage at the cost of exposing information to unintended users. As an information-theoretic paradigm, secrecy rate derives bounds for secur…
Secure M-PSK Communication via Directional Modulation
Ashkan Kalantari, Mojtaba Soltanalian, Sina Maleki +2
In this work, a directional modulation-based technique is devised to enhance the security of a multi-antenna wireless communication system employing M-PSK modulation to convey info…
Performance Analysis of Opportunistic Relaying Over Imperfect Non-identical Log-normal Fading Channels
Ashkan Kalantari, Mohammadali Mohammadi, Mehrdad Ardebilipour
Motivated by the fact that full diversity order is achieved using the "best-relay" selection technique, we consider opportunistic amplify-and-forward and decode-and-forward relayin…
Secrecy Energy Efficiency Optimization for MISO and SISO Communication Networks
Ashkan Kalantari, Sina Maleki, Symeon Chatzinotas +1
Energy-efficiency, high data rates and secure communications are essential requirements of the future wireless networks. In this paper, optimizing the secrecy energy efficiency is…
Secrecy Analysis on Network Coding in Bidirectional Multibeam Satellite Communications
Ashkan Kalantari, Gan Zheng, Zhen Gao +2
Network coding is an efficient means to improve the spectrum efficiency of satellite communications. However, its resilience to eavesdropping attacks is not well understood. This p…
Joint Power Control in Wiretap Interference Channels
Ashkan Kalantari, Sina Maleki, Gan Zheng +2
Interference in wireless networks degrades the signal quality at the terminals. However, it can potentially enhance the secrecy rate. This paper investigates the secrecy rate in a…
Performance Analysis of Multi-Antenna Relay Networks over Nakagami-m Fading Channel
E. Soleimani-Nasab, A. Kalantari, M. Ardebilipour
In this chapter, the authors present the performance of multi-antenna selective combining decode-and-forward (SC-DF) relay networks over independent and identically distributed (i.…