Results 241 to 250 of about 71,373 (268)

Outage Performance of Downlink IRS-Assisted NOMA Systems

GLOBECOM 2020 - 2020 IEEE Global Communications Conference, 2020
In this paper, a downlink non-orthogonal multiple access (NOMA) system is studied, in which an intelligent reflecting surface (IRS) is deployed to enhance the coverage by assisting a cell-edge user device (UD) to communicate with the base station (BS).
Yanyu Cheng, Kwok Hung Li, Yuanwei Liu, Kah Chan Teh   +3 more
openaire   +1 more source

Analytical outage performance of cognitive small cell network

2014 IEEE Online Conference on Green Communications (OnlineGreenComm), 2014
Spectral efficiency (SE) and energy efficiency (EE) are the critical challenges for the next generation cellular network (NGCN). Small cells deployment and cognitive radio which facilitates efficient utilization of radio spectrum are the promising techniques for evolution of the NGCN.
Mukesh Kumar Mishra, Aditya Trivedi
openaire   +1 more source

Improving TCP performance after a long channel outage

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2003
Bursty packet loss caused by channel outage is one of the most significant problems in high-frequency-band communications because TCP applications, especially after experiencing bursty packet loss, take a long time to recover. This paper proposes a rapid recovery algorithm for use at the TCP layer for a bursty packet loss channel in a server-client ...
Homare Murakami, Gang Wu, Masugi Inoue
openaire   +1 more source

Outage performance analysis of relay selection in SWIPT systems

2016 IEEE Wireless Communications and Networking Conference, 2016
In this paper, we investigate the performance of relay selection for simultaneous wireless information and power transfer (SWIPT) systems. In particular, we consider a relay network consisting of both energy harvesting (EH) and non-EH relays. We further assume amplify-and-forward relaying and power-splitting at the EH units.
Aïssa Ikhlef, Mohammud Z. Bocus
openaire   +1 more source

Outage Performance of OSTBC in Double Scattering MIMO Channels

Wireless Personal Communications, 2007
In this letter, taking into account realistic propagation environments in the presence of double scattering, we analyze the outage probability of orthogonal space-time block coding (OSTBC) for an arbitrary finite number of transmit and receive antennas.
openaire   +1 more source

Outage planning: human performance considerations

Conference Record for 1992 Fifth Conference on Human Factors and Power Plants, 1992
Human performance is an important factor in the assessment of outage plans and shutdown risk. An assessment process for examining plant outage working conditions against six fundamental methods for supporting reliable human performance is described. Results of a generic analysis using this process are presented.
openaire   +1 more source

Wireless Powered Cognitive Cooperative Networks: Outage Performance

2019 13th International Conference on Signal Processing and Communication Systems (ICSPCS), 2019
This paper jointly studies cognitive radio (CR) and non-orthogonal multiple access (NOMA) networks by adopting an energy restricted amplify-and-forward relay. We study the outage performance of NOMA secondary destination users (U 1 and U 2 ). Then, power allocation (PA) factors based on the NOMA users’ outage fairness are evaluated for different ...
Sultangali Arzykulov, Galymzhan Nauryzbayev, Behrouz Maham, Theodoros A. Tsiftsis, Khaled M. Rabie   +4 more
openaire   +1 more source

Outage performance of multi-antenna multicasting for wireless networks

IEEE Transactions on Wireless Communications, 2009
Wireless cellular networks often need to convey the same data to multiple users simultaneously. This kind of transmission is known as physical layer multicasting. Unfortunately, when any user fails to receive the data correctly, the information must be retransmitted to all the users, resulting in a waste of radio resources.
Seung Young Park, David James Love
openaire   +1 more source

Outage Performance with Handover Triggering in Cellular Mobile Networks

Wireless Personal Communications, 2001
An approach to performance evaluation of cellular mobile networks is proposed, which includes the behavior of handover algorithms in the computation of outage probability. In a general system scenario, with a central cluster and interfering base stations, the average outage probability is computed along a trip of the mobile terminal that involves ...
GRAZIOSI, FABIO, PRATESI, MARCO, RUGGIERI M, SANTUCCI, FORTUNATO   +3 more
openaire   +1 more source

Outage performance of FSO multi-hop parallel relaying

2012 20th Signal Processing and Communications Applications Conference (SIU), 2012
In this paper, we investigate the outage performance of relay-assisted free-space optical (FSO) networks which build upon the combinations of serial and parallel relaying. We assume log-normal atmospheric turbulence channels and derive outage probability expressions for multi-hop parallel relaying scheme under consideration.
Mohammadreza A. Kashani, Murat Uysal
openaire   +2 more sources