Results 21 to 30 of about 613,083 (218)
Entropy, 2020 As the core technology of 5G mobile communication systems, massive multi-input multi-output (MIMO) can dramatically enhance the energy efficiency (EE), as well as the spectral efficiency (SE), which meets the requirements of new applications.
Bin Jiang +5 more
doaj +1 more source
Analysis and Design of Channel Estimation in Multicell Multiuser MIMO OFDM Systems [PDF]
, 2014 This paper investigates the uplink transmission in multicell multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. The system model considers imperfect channel estimation, pilot contamination (PC), and
Xu, Peng +3 more
core +1 more source
CSI Feedback Based on Deep Learning for Massive MIMO Systems
IEEE Access, 2019 Aiming at the problem of high complexity and low feedback accuracy of existing channel state information (CSI) feedback algorithms for frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, this paper proposes a CSI ...
Yong Liao +3 more
doaj +1 more source
Massive MIMO at night: On the operation of massive MIMO in low traffic scenarios
2015 IEEE International Conference on Communications (ICC), 2015 For both maximum ratio transmission (MRT) and zero forcing (ZF) precoding schemes and given any specific rate requirement the optimal transmit power, number of antennas to be used, number of users to be served and number of pilots spent on channel training are found with the objective to minimize the total consumed power at the base station.
Hei Victor Cheng +3 more
openaire +3 more sources
Massive MIMO-NOMA Based MEC in Task Offloading for Delay Minimization
IEEE Access, 2023 Mobile edge computing (MEC) has been considered a promising technology to reduce task offloading and computing delay by enabling mobile devices to offload their computation-intensive tasks. Non-orthogonal multiple access (NOMA) is regarded as a promising
Saadet Simay Yilmaz, Berna Ozbek
doaj +1 more source
Massive MIMO as a cyber-weapon
2014 48th Asilomar Conference on Signals, Systems and Computers, 2014 A scheme for a multi-antenna jammer, jamming a SISO primary link working in TDD mode is presented. The jammer relies on reciprocity to estimate the channel to a terminal in the primary link blindly. The jammer can then beamform noise towards this user to degrade the performance of the primary link.
Karlsson, Marcus, Larsson, Erik G
openaire +3 more sources
IEEE Journal on Selected Areas in Communications, 2016 Motivated by the demand for energy-efficient communication solutions in the next generation cellular network, a mixed-ADC architecture for massive multiple input multiple output (MIMO) systems is proposed, which differs from previous works in that herein one-bit analog-to-digital converters (ADCs) partially replace the conventionally assumed high ...
Ning Liang, Wenyi Zhang 0001
openaire +2 more sources
Massive MIMO Combining with Switches [PDF]
IEEE Wireless Communications Letters, 2016 Massive multiple-input multiple-output (MIMO) is expected to play a central role in future wireless systems. The deployment of large antenna arrays at the base station and the mobile users offers multiplexing and beamforming gains that boost system spectral efficiency.
Ahmed Alkhateeb +3 more
openaire +3 more sources
IEEE Access, 2018 By enabling very high bandwidth for radio communications, the millimeter-wave (mmWave), which can easily be integrated with massive-multiple-input-multiple-output (massive-MIMO) due to small antenna size, has been attracting growing attention as a ...
Wenchi Cheng +4 more
doaj +1 more source
Spatial modulation for generalized MIMO: challenges, opportunities and implementation [PDF]
, 2013 A key challenge of future mobile communication research is to strike an attractive compromise between wireless network's area spectral efficiency and energy efficiency.
Renzo, Marco Di +13 more
core +1 more source