Results 31 to 40 of about 476,199 (158)
Secrecy Degrees of Freedom of MIMO Broadcast Channels With Delayed CSIT [PDF]
IEEE Transactions on Information Theory, 2013 The degrees of freedom (DoF) of the two-user Gaussian multiple-input and multiple-output (MIMO) broadcast channel with confidential message (BCC) is studied under the assumption that delayed channel state information (CSI) is available at the transmitter. We characterize the optimal secrecy DoF (SDoF) region and show that it can be achieved by a simple
Sheng Yang 0001 +3 more
openaire +3 more sources
Wireless Communications and Mobile Computing, Volume 2019, Issue 1, 2019., 2019 In this era, the number of users in a network is increasing tremendously at a faster rate; as a consequence, quality of service (QoS) is drastically deteriorating. To compensate such kinds of problems, we attempted to enhance the QoS of the network, which leads to an improvement in throughput, link quality, spectral efficiency, and many more.
Shakti Raj Chopra +3 more
wiley +1 more source
Transceiver Designs for MIMO Relaying Systems with Imperfect Channel State Information
Mobile Information Systems, Volume 2018, Issue 1, 2018., 2018 We focus on imperfect channel state information (ICSI) in closed‐loop multiple‐input multiple‐output (MIMO) amplify‐and‐forward (AF) relaying systems. First, near‐optimal closed‐form solutions for transceiver designs are provided for the source‐to‐relay‐to‐destination link with ICSI at all nodes.
Bridget Durowaa Antwi-Boasiako +3 more
wiley +1 more source
Prolonging the Lifetime of Wireless Sensor Networks: A Review of Current Techniques
Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018 There has been an increase in research interest in wireless sensor networks (WSNs) as a result of the potential for their widespread use in many different areas like home automation, security, environmental monitoring, and many more. Despite the successes gained, the widespread adoption of WSNs particularly in remote and inaccessible places where their
Felicia Engmann +5 more
wiley +1 more source
Degrees of Freedom Region of the MIMO Interference Channel With Output Feedback and Delayed CSIT
, 2012 The two-user multiple-input multiple-output (MIMO) interference channel (IC) with arbitrary numbers of antennas at each terminal is considered and the degrees of freedom (DoF) region is characterized in the presence of noiseless channel output feedback ...
Poor, HV +3 more
core +1 more source
Wireless Communications and Mobile Computing, Volume 2017, Issue 1, 2017., 2017 This paper addresses the performance analysis of an adaptive wireless link with one antenna transmitter and a multiple antenna maximum‐ratio combining (MRC) receiver. Two main assumptions are used in this paper: (1) Rayleigh fading correlated channels (i.e., MRC branch correlation) and (2) imperfect (outdated) channel state information at the ...
Ramiro Sámano-Robles +3 more
wiley +1 more source
A Novel Biobjective Risk‐Based Model for Stochastic Air Traffic Network Flow Optimization Problem
The Scientific World Journal, Volume 2015, Issue 1, 2015., 2015 Network‐wide air traffic flow management (ATFM) is an effective way to alleviate demand‐capacity imbalances globally and thereafter reduce airspace congestion and flight delays. The conventional ATFM models assume the capacities of airports or airspace sectors are all predetermined.
Kaiquan Cai +4 more
wiley +1 more source
Precoding Method Interference Management for Quasi‐EVD Channel
The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014 The Cholesky decomposition‐block diagonalization (CD‐BD) interference alignment (IA) for a multiuser multiple input multiple output (MU‐MIMO) relay system is proposed, which designs precoders for the multiple access channel (MAC) by employing the singular value decomposition (SVD) as well as the mean square error (MSE) detector for the broadcast ...
Wei Duan +4 more
wiley +1 more source
On the Degrees-of-Freedom of Two-Unicast Wireless Networks With Delayed CSIT [PDF]
IEEE Transactions on Information Theory, 2019 We characterize the degrees-of-freedom (DoF) region of a class of two-unicast wireless networks under the assumption of delayed channel state information at the transmitters. We consider a layered topology with arbitrary connectivity, and we introduce new outer-bounds on the DoF region through the graph-theoretic notion of bottleneck nodes.
openaire +2 more sources
RETRACTED: Resource allocation for integrated satellite‐terrestrial networks based on RSMA
IET Communications, Volume 19, Issue 1, January/December 2025.We first establish a downlink transmission framework for the integrated satellite‐terrestrial network based on RSMA, to achieve high data rate transmission of virtual reality applications globally. Then, considering some practical constraints, a joint resource allocation problem of rate and transmission power is formulated.
Jianfeng Shi +3 more
wiley +1 more source