With the commencement of the 5 th generation (5G) of wireless networks, researchers around the globe have started paying their attention to the imminent challenges that may …
The capacity and coverage requirements for 5 th generation (5G) and beyond wireless connectivity will be significantly different from the predecessor networks. To meet these …
J Ma, C Liang, C Xu, L Ping - IEEE Journal on Selected Areas …, 2017 - ieeexplore.ieee.org
This paper is concerned with pilot transmission schemes in a large antenna system with non- orthogonal multiple-access (NOMA). We investigate two pilot structures-orthogonal pilot …
I Khan, D Singh - AEU-International Journal of Electronics and …, 2018 - Elsevier
Massive MIMO (multiple-input-multiple-output) is one of the key technologies of 5G mobile cellular networks, which can form a huge antenna array by providing a large number of …
Uplink and Downlink channel estimation in massive Multiple Input Multiple Output (MIMO) systems is an intricate issue because of the increasing channel matrix dimensions. The …
M Bakulin, V Kreyndelin, S Melnik, V Sudovtsev… - Sensors, 2022 - mdpi.com
One of the development directions of new-generation mobile communications is using multiple-input multiple-output (MIMO) channels with a large number of antennas. This …
H Zhu, W Chen, Y Wu - Electronics, 2020 - mdpi.com
Based on the efficient inverse Cholesky factorization, we propose an implementation of OMP (called as version 0, ie, v0) and its four memory-saving versions (ie, the proposed v1, v2, v3 …
C Hu, H Wang, R Song - IEEE Access, 2020 - ieeexplore.ieee.org
In the multi-cell massive multiple-input multiple-output (MIMO) systems, the mitigation of pilot contamination is an important issue in the semi-blind channel estimations. For the pilot …
Unmanned aerial vehicle (UAV) assisted cell-free communications hold promise for enhancing the coverage and capacity of heterogeneous cellular networks. However, the …