Results 21 to 30 of about 2,448 (179)
On the Uplink Transmission of Extra-Large Scale Massive MIMO Systems [PDF]
IEEE Transactions on Vehicular Technology, 2020 With the inherent benefits, such as, better cell coverage and higher area throughput, extra-large scale massive multiple-input multiple-output (MIMO) has great potential to be one of the key technologies for the next generation wireless communication systems. However, in practice, when the antenna dimensions grow large, spatial non-stationarities occur
Xi Yang 0003 +3 more
openaire +2 more sources
Large-Scale Beamforming for Massive MIMO via Randomized Sketching [PDF]
IEEE Transactions on Vehicular Technology, 2021 Massive MIMO system yields significant improvements in spectral and energy efficiency for future wireless communication systems. The regularized zero-forcing (RZF) beamforming is able to provide good performance with the capability of achieving numerical stability and robustness to the channel uncertainty.
Hayoung Choi +5 more
openaire +2 more sources
Low-Complexity Transmit Antenna Selection and Beamforming for Large-Scale MIMO Communications
International Journal of Antennas and Propagation, 2014 Transmit antenna selection plays an important role in large-scale multiple-input multiple-output (MIMO) communications, but optimal large-scale MIMO antenna selection is a technical challenge. Exhaustive search is often employed in antenna selection, but
Kun Qian, Wen-Qin Wang, Huaizong Shao
doaj +1 more source
Topological Pilot Assignment in Large-Scale Distributed MIMO Networks [PDF]
IEEE Transactions on Wireless Communications, 2022 We consider the pilot assignment problem in large-scale distributed multi-input multi-output (MIMO) networks, where a large number of remote radio head (RRH) antennas are randomly distributed in a wide area, and jointly serve a relatively smaller number of users (UE) coherently. By artificially imposing topological structures on the UE-RRH connectivity,
Han Yu 0010, Xinping Yi, Giuseppe Caire
openaire +3 more sources
Virtual Large-Scale Array Beamforming Analysis Using Measured Subarray Antenna Patterns
IEEE Access, 2017 An accurate and reliable massive MIMO channel model is crucial for supporting design and performance evaluation of such systems in the future. However, massive MIMO channel sounding systems are cost prohibitive and complicated, where a large number of ...
Fengchun Zhang +3 more
doaj +1 more source
On the Feasibility of Full-Duplex Large-Scale MIMO Cellular Systems [PDF]
IEEE Transactions on Wireless Communications, 2018 29 pages, 8 figures, submitted to transaction on wireless communications (TWC)
Jeongwan Koh +3 more
openaire +2 more sources
Selection Based List Detection With Approximate Matrix Inversion for Large-Scale MIMO Systems
IEEE Access, 2018 Large-scale multiple-input multiple-output (LS-MIMO) technology constitutes a foundation for next generation wireless communication systems. Detection techniques are a key issue for practical applications of LS-MIMO.
Tianpei Chen, Harry Leib
doaj +1 more source
Iterative Signal Detection for Large-Scale GSM-MIMO Systems [PDF]
IEEE Transactions on Vehicular Technology, 2018 Generalized spatial modulations (GSM) represent a novel multiple input multiple output (MIMO) scheme, which can be regarded as a compromise between spatial multiplexing MIMO and conventional spatial modulations, achieving both spectral efficiency and energy efficiency. Due to the high computational complexity of the maximum likelihood detector in large
Hugo Lopes, Nuno Souto
openaire +2 more sources
Performance Analysis of 3D Massive MIMO Cellular Systems with Collaborative Base Station
International Journal of Antennas and Propagation, 2014 Massive MIMO have drawn considerable attention as they enable significant capacity and coverage improvement in wireless cellular network. However, pilot contamination is a great challenge in massive MIMO systems.
Xingwang Li +4 more
doaj +1 more source
A Generalized Sum-Rate Optimizer for Cooperative Multiuser Massive MIMO Link Topologies
IEEE Access, 2014 Large-scale, or massive, multiple-input multiple-output (MIMO) systems are typified by the number of antennas contributing to a communication link.
Adam L. Anderson, Michael A. Jensen
doaj +1 more source