Browsing Academic by Author "n 2007042861"
Now showing items 1-10 of 10
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A minorization-maximization algorithm for an-based mimome secrecy rate maximization
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)We consider the problem of secrecy rate maximization in a multi-input multi-output multi-eavesdropper (MIMOME) wiretap channel and present an exact solution. A general system model with a multi-antenna eavesdropper and a ... -
A Minorization-Maximization Algorithm for Maximizing the Secrecy Rate of the MIMOME Wiretap Channel
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)We consider physical layer security in a multi-input multi-output multi-eavesdropper wiretap channel and present an exact solution to the problem of secrecy rate maximization. A system model with multiple multi-antenna ... -
A Stochastic Geometric Analysis of Device-to-Device Communications Operating over Generalized Fading Channels
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Device-to-device (D2D) communications are now considered an integral part of future 5G networks, which will enable direct communication between user equipments and achieve higher throughputs than conventional cellular ... -
Adaptive Network Coding over Cognitive Relay Networks
( IEEE , 2013 , Conference Paper)We consider network coded cooperation for cognitive relay networks. The primary system comprises multiple sources and multiple destinations, whereas the secondary system comprises multiple sources, multiple relays and a ... -
An Adaptive Transmission Scheme for Two-Way Relaying with Asymmetric Data Rates
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)In this paper, we address the problem of asymmetric data rates in two-way communication systems. In particular, we propose an adaptive transmission scheme that combines network coding (NC) and opportunistic user selection ... -
Doppler compensation for AF two way relaying over time varying UWA channels
( IEEE , 2014 , Conference Paper)In this paper, we consider Doppler compensation for time varying underwater acoustic channels. The underlying system model comprises two sources, S1 and S2, communicating with each other through a relay, R. The transmission ... -
Doppler compensation for D-STBC coded time-varying underwater acoustic channels
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper we investigate the performance of distributed space-time block coding (D-STBC) orthogonal frequency division multiplexing (OFDM) over underwater acoustic (UWA) channels. In particular, we consider a relaying ... -
Joint optimization of throughput and delay over PPP interfered relay networks
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Future wireless networks are expected to achieve higher data rates and ubiquitous coverage by seamless cooperation among diverse network technologies. However, it also increases the risk of co-channel interference and ... -
Opportunistic spectrum sharing in relay-assisted cognitive systems with imperfect CSI
( IEEE , 2014 , Article)In this paper, we consider spectrum sharing between cognitive radio (CR) users and a licensed primary user (PU) to enhance the spectrum efficiency. In the considered scenario, the PU is not able to successfully transmit ... -
Precoded spatial modulation for the wiretap channel with relay selection and cooperative jamming
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)We propose in this paper a physical layer security (PLS) scheme for dual-hop cooperative networks in an effort to enhance the communications secrecy. The underlying model comprises a transmitting node (Alice), a legitimate ...