Results 1 to 10 of about 839,900 (174)
Impact of Channel Aging on Cell-Free Massive MIMO Over Spatially Correlated Channels [PDF]
IEEE Transactions on Wireless Communications, 2021 In this paper, we investigate the impact of channel aging on the performance of cell-free (CF) massive multiple-input multiple-output (MIMO) systems with both spatial correlation and pilot contamination.
Jiakang Zheng +3 more
semanticscholar +1 more source
High-Efficiency Expectation Propagation Detector for High-Order Massive MIMO Systems
IEEE Access, 2019 Multiple-inputs multiple-outputs (MIMO) technology, including massive MIMO, plays an important role in modern wireless communication systems. Massive MIMO systems with high-order modulation can promote spectrum efficiency.
Guoqiang Yao +3 more
doaj +1 more source
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
Cascaded Channel Estimation for Large Intelligent Metasurface Assisted Massive MIMO [PDF]
IEEE Wireless Communications Letters, 2019 In this letter, we consider the problem of channel estimation for large intelligent metasurface (LIM) assisted massive multiple-input multiple-output (MIMO) systems. The main challenge of this problem is that the LIM integrated with a large number of low-
Zhen-Qing He, Xiaojun Yuan
semanticscholar +1 more source
Massive MIMO in 5G: How Beamforming, Codebooks, and Feedback Enable Larger Arrays [PDF]
IEEE Communications Magazine, 2023 Massive multiple-input multiple-output (MIMO) is an important technology in fifth generation (5G) cellular networks and beyond. To help design the beamforming at the base station, 5G has introduced new support in the form of flexible feedback and ...
Ryan M. Dreifuerst, R. Heath
semanticscholar +1 more source
Massive MIMO: ten myths and one critical question [PDF]
IEEE Communications Magazine, 2015 Wireless communications is one of the most successful technologies in modern years, given that an exponential growth rate in wireless traffic has been sustained for over a century (known as Cooper's law). This trend will certainly continue, driven by new
Emil Björnson, E. Larsson, T. Marzetta
semanticscholar +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-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
Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO [PDF]
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019 Orthogonal time frequency space (OTFS) modulation outperforms orthogonal frequency division multiplexing (OFDM) in high-mobility scenarios. One challenge for OTFS massive MIMO is downlink channel estimation due to the required high pilot overhead.
Wenqian Shen +4 more
semanticscholar +1 more source
Communication-Sensing Region for Cell-Free Massive MIMO ISAC Systems [PDF]
IEEE Transactions on Wireless Communications, 2023 This paper investigates the system model and the transmit beamforming design for the Cell-Free massive multi-input multi-output (MIMO) integrated sensing and communication (ISAC) system.
Weihao Mao +5 more
semanticscholar +1 more source