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- Mohamed Amir, Amr El-Keyi, Mohammed Nafie
- IEEE Transactions on Information Theory
- 2011
An interference alignment (IA) scheme is presented that allows multiple opportunistic transmitters (secondary users) to use the same frequency band of a pre-existing primary link without generating… (More)
- Amr El-Keyi, Thia Kirubarajan, Alex B. Gershman
- IEEE Transactions on Signal Processing
- 2005
In this paper, we present a novel approach to implement the robust minimum variance distortionless response (MVDR) beamformer. This beamformer is based on worst-case performance optimization and has… (More)
- R. Irem Bor Yaliniz, Amr El-Keyi, Halim Yanikomeroglu
- 2016 IEEE International Conference on…
- 2016
Agility and resilience requirements of future cellular networks may not be fully satisfied by terrestrial base stations in cases of unexpected or temporary events. A promising solution is assisting… (More)
- Abdelrahman M. Ibrahim, Tamer A. ElBatt, Amr El-Keyi
- 2013 IEEE 24th Annual International Symposium on…
- 2013
The recent witnessed evolution of cellular networks from a carefully planned deployment to more irregular, heterogeneous deployments of Macro, Pico and Femto-BSs motivates new analysis and design… (More)
- Mohamed Fadel, Amr El-Keyi, Ahmed S Sultan
- IEEE Transactions on Signal Processing
- 2012
A wireless communication scenario is considered with <i>K</i> single-antenna source-destination pairs communicating through several half-duplex amplify-and-forward MIMO relays where each source is… (More)
- Mohamed Alzenad, Amr El-Keyi, Faraj Lagum, Halim Yanikomeroglu
- IEEE Wireless Communications Letters
- 2017
Unmanned aerial vehicle mounted base stations (UAV-BSs) can provide wireless services in a variety of scenarios. In this letter, we propose an optimal placement algorithm for UAV-BSs that maximizes… (More)
- Ahmed Wagdy, Amr El-Keyi, Tamer Khattab, Mohammed Nafie
- 2014 IEEE International Symposium on Information…
- 2014
In this paper, the degrees of freedom (DoF) of the two-user single input single output (SISO) X channel are investigated. Three cases are considered for the availability of channel state information… (More)
- Amr El-Keyi, Tamer A. ElBatt, Fan Bai, Cem U. Saraydar
- 2012 International Conference on Computing…
- 2012
In this paper, we provide a review of the benefits of employing multiple-input multiple-output (MIMO) processing techniques in vehicular ad hoc networks VANETs. These benefits include increasing the… (More)
- Amr El-Keyi, Thai Kirubarajan, A B Gershman
- Fourth IEEE Workshop on Sensor Array and…
- 2006
We develop a wideband adaptive beamformer with an improved robustness against presteering errors. The proposed beamformer employs the presteered broadband array processor and models the uncertainty… (More)
- Benoît Champagne, Amr El-Keyi, Chao-Cheng Tu
- GLOBECOM 2009 - 2009 IEEE Global…
- 2009
A new method is proposed for the blind subspace-based identification of the coefficients of time-varying (TV) single-input multiple-output (SIMO) FIR channels. The TV channel coefficients are… (More)