Results 31 to 40 of about 14,391 (289)

Outage performance for amplify-and-forward channels with an unauthenticated relay [PDF]

2012 IEEE International Conference on Communications (ICC), 2012
We investigate a relay network where the source can potentially utilize an unauthenticated amplify-and-forward (AF) relay to augment its direct transmission of a confidential message to the destination. Since the relay is unauthenticated, it is desirable to protect the confidential data from it while simultaneously making use of it to increase the ...
Jing Huang 0008, Amitav Mukherjee, A. Lee Swindlehurst   +2 more
openaire   +1 more source

Multihop Diversity for Fading Mitigation in Multihop Wireless Networks [PDF]

, 2011
The concept of multihop diversity is proposed, where all the nodes of a multihop link are assumed to have buffers for temporarily storing their received packets.
Yang, Lie-Liang, Lie-Liang Yang, Chen Dong, Hanzo, Lajos, Lajos Hanzo, Dong, Chen   +5 more
core   +1 more source

Non-orthogonal multiple access in full-duplex-based coordinated direct and relay transmission (CDRT) system: performance analysis and optimization

EURASIP Journal on Wireless Communications and Networking, 2020
This paper considers non-orthogonal multiple access (NOMA)-based coordinated direct and relay transmission (CDRT) system, where the base station (BS) directly communicates with the nearby users while it requires the help of a dedicated relay to ...
Aswathi V, Babu A V
doaj   +1 more source

Trajectory Optimization for Cellular-Enabled UAV With Connectivity Outage Constraint

IEEE Access, 2020
This paper studies the trajectory optimization problem of a single cellular-enabled unmanned aerial vehicle (UAV), taking into account the outage performance of the entire trajectory.
Yu-Jia Chen, Da-Yu Huang
doaj   +1 more source

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer

, 2022
This paper evaluates the physical layer security performance of a reconfigurable intelligent surface (RIS) enabled wireless network in the presence of a passive eavesdropper.
Olakanmi Oladayo Olufemi, Pius Adewale Owolawi, Owolawi, Pius Adewale, Kehinde Oluwasesan Odeyemi, Olufemi, Olakanmi Oladayo, Odeyemi, Kehinde Oluwasesan   +5 more
core   +1 more source

Outage-constrained resource allocation in uplink NOMA for critical applications [PDF]

, 2017
In this work, we consider the resource allocation problem for uplink non-orthogonal multiple access (NOMA) networks whose users represent power-restricted but high priority devices, such as those used in sensor networks supporting health and public ...
Saeedeh Parsaeefard (7207586), Mahsa Derakhshani (2572993), Tho Le-Ngoc (7207592), Daniel Tweed (7210271)   +3 more
core   +1 more source

Outage Probability Analysis for Correlated Sources Transmission over Rician Fading Channels [PDF]

, 2013
In this paper, the outage probability of a Slepian-Wolf transmission system is analysed theoretically. We consider two correlated binary information sequences where bit-flipping model is adopted, where the the information bits of the second source are ...
Khoirul Anwar, Matsumoto, Tad, Shen Qian, Qian, Shen, Tad Matsumoto, Anwar, Khoirul, Cheng, Meng, Meng Cheng   +7 more
core   +1 more source

Outage Performance of Cooperative Systems Under IQ Imbalance

IEEE Transactions on Communications, 2014
In this contribution, we investigate the outage performance of OFDM-based Decode and Forward (DF), Amplify and Forward (AF) and Controlled DF (CDF) cooperative systems under IQ Imbalance (IQI). In particular, tractable and compact approximate outage probability expressions are derived and the effect of the different IQI parameters is analyzed for ...
Ala Gouissem, Ridha Hamila, Mazen O. Hasna   +2 more
openaire   +3 more sources

Modeling Analysis for Downlink RIS-UAV-Assisted NOMA over Air-to-Ground Line-of-Sight Rician Channels

Drones
This paper proposes a drone-assisted NOMA communication system equipped with a reconfigurable intelligent surface (RIS). Given the Line-of-Sight nature of the Air-to-Ground link, a more realistic Rician fading environment is chosen for the study of ...
Suoping Li, Xiangyu Liu, Jaafar Gaber, Guodong Pan   +3 more
doaj   +1 more source

Defeating Jamming Using Outage Performance Aware Joint Power Allocation and Access Point Placement in Uplink Pairwise NOMA

IEEE Open Journal of the Communications Society, 2021
In this paper, an uplink pairwise Non-Orthogonal Multiple Access (NOMA) scenario using a mobile access point (AP) or an unmanned aerial vehicle in the presence of a jamming attack is considered.
Van-Lan Dao, Le-Nam Hoang, Svetlana Girs, Elisabeth Uhlemann   +3 more
doaj   +1 more source