Results 21 to 30 of about 476,199 (158)
Predicting Student Academic Performance at Higher Education Using Data Mining: A Systematic Review
Applied Computational Intelligence and Soft Computing, Volume 2022, Issue 1, 2022., 2022 Recently, educational institutions faced many challenges. One of these challenges is the huge amount of educational data that can be used to discover new insights that have a significant contribution to students, teachers, and administrators. Nowadays, researchers from numerous domains are very interested in increasing the quality of learning in ...
Sarah A. Alwarthan +3 more
wiley +1 more source
IET Communications, Volume 15, Issue 13, Page 1677-1690, August 2021., 2021 Abstract The next generation of mobile networks (5G) is expected to achieve high data rates, reduce latency, as well as improve the spectral and energy efficiency of wireless communication systems. Several technologies are being explored to be used in 5G systems.
Mohamed Benzaghta, Khaled M. Rabie
wiley +1 more source
NOMA and OMA‐Based Massive MIMO and Clustering Algorithms for Beyond 5G IoT Networks
Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021 The Internet of Things (IoT) has brought about various global changes, as all devices will be connected. This article examines the latest 5G solutions for enabling a massive cellular network. It further explored the gaps in previously published articles, demonstrating that to deal with the new challenges.
Taj Rahman +6 more
wiley +1 more source
Linear Degrees of Freedom of the $X$-Channel With Delayed CSIT [PDF]
IEEE Transactions on Information Theory, 2014 We establish the degrees of freedom of the two-user X-channel with delayed channel knowledge at transmitters (i.e., delayed CSIT), assuming linear coding strategies at the transmitters. We derive a new upper bound and characterize the linear degrees of freedom of this network to be 6/5.
Sina Lashgari +2 more
openaire +4 more sources
Not too delayed CSIT achieves the optimal degrees of freedom [PDF]
2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012 8 pages; 3 ...
Namyoon Lee, Robert W. Heath Jr.
openaire +3 more sources
Linear degrees of freedom of the MIMO X-channel with delayed CSIT [PDF]
2014 IEEE International Symposium on Information Theory, 2014 We study the degrees of freedom (DoF) of the multiple-input multiple-output X-channel (MIMO XC) with delayed channel state information at the transmitters (delayed CSIT), assuming linear coding strategies at the transmitters. We present two results: 1) the linear sum DoF for MIMO XC with general antenna configurations, and 2) the linear DoF region for ...
David T. H. Kao, Amir Salman Avestimehr
openaire +5 more sources
Precoding Methods for the MISO Broadcast Channel with Delayed CSIT [PDF]
IEEE Transactions on Wireless Communications, 2013 Recent information theoretic results suggest that precoding on the multi-user downlink MIMO channel with delayed channel state information at the transmitter (CSIT) could lead to data rates much beyond the ones obtained without any CSIT, even in extreme situations when the delayed channel feedback is made totally obsolete by a feedback delay exceeding ...
Xinping Yi, David Gesbert
openaire +1 more source
CoRR, 2012 arXiv admin note: substantial text overlap with arXiv:1205 ...
Jinyuan Chen, Petros Elia
openaire +3 more sources
Two-User Erasure Interference Channels With Local Delayed CSIT [PDF]
IEEE Transactions on Information Theory, 2016 Accepted for publication in IEEE Transactions on Information ...
Alireza Vahid, A. Robert Calderbank
openaire +3 more sources
Novel transmission strategies for MIMO networks with imperfect and delayed CSIT [PDF]
, 2016 Channel state information at the transmitters (CSIT) is crucial to the downlink multi-user transmissions. However, acquiring accurate and instantaneous CSIT is challenging in practical systems, due to the channel estimation error, channel quantization ...
Hao, Chenxi
core +1 more source