Results 71 to 80 of about 48,136 (224)
Near-Field Wideband Extremely Large-scale MIMO Transmission with Holographic Metasurface Antennas [PDF]
, 2022 Jie Xu +5 more
openalex +1 more source
Signal detection of massive MIMO-OTFS using DNN algorithm with diverse channel state estimation
Physics OpenMassive multiple-input multiple-output orthogonal time frequency space (M-MIMO-OTFS) is a promising waveform for beyond 5G (B5G) systems, offering high spectral efficiency and robustness in time-varying channels.
Arun Kumar, Aziz Nanthaamornphong
doaj +1 more source
Channel estimation for massive MIMO TDD systems assuming pilot contamination and flat fading
EURASIP Journal on Wireless Communications and Networking, 2018 Channel estimation is crucial for massive massive multiple-input multiple-output (MIMO) systems to scale up multi-user (MU) MIMO, providing great improvement in spectral and energy efficiency.
Felipe A. P. de Figueiredo +3 more
doaj +1 more source
On the Capacity and Performance of Generalized Spatial Modulation
, 2015 Generalized spatial modulation (GSM) uses $N$ antenna elements but fewer radio frequency (RF) chains ($R$) at the transmitter. Spatial modulation and spatial multiplexing are special cases of GSM with $R=1$ and $R=N$, respectively.
Chockalingam, A., Narasimhan, T. Lakshmi
core +1 more source
Channel Tracking and Transmission Design in 5G Large-Scale MIMO System
IEEE Access, 2019 The 5G wireless channel in the high-speed rail scene has the characteristics of fast time-varying and double selection, that is, frequency selectivity and time selectivity.
Yang Wang +3 more
doaj +1 more source
Finite Horizon Optimization for Large-Scale MIMO
Large-scale multiple-input multiple-output (MIMO) is an emerging wireless technology that deploys thousands of transmit antennas at the base-station to boost spectral efficiency. The classic weighted minimum mean-square-error (WMMSE) algorithm for beamforming is no suited for the large-scale MIMO because each iteration of the algorithm then requires ...
Feng, Yi, Shen, Kaiming
openaire +2 more sources
International Journal of Antennas and Propagation, 2016 The emerging large-scale/massive multi-input multioutput (MIMO) system combined with orthogonal frequency division multiplexing (OFDM) is considered a key technology for its advantage of improving the spectral efficiency.
Qifeng Zou, Xuezhi Tan, Mei Liu, Lin Ma
doaj +1 more source
Pilot Design for Sparse Channel Estimation in Large-Scale MIMO-OFDM System
International Journal of Antennas and Propagation, 2016 The pilot design problem in large-scale multi-input-multioutput orthogonal frequency division multiplexing (MIMO-OFDM) system is investigated from the perspective of compressed sensing (CS).
Chao Xu +3 more
doaj +1 more source
Spatial Variation Analysis for Measured Indoor Massive MIMO Channels
IEEE Access, 2017 As one of the most important candidate technologies for the fifth-generation wireless communication systems, massive MIMO technology has been widely studied recently because of the significant improvements it can provide in terms of spectrum efficiency ...
Qi Wang +6 more
doaj +1 more source
Improved SSOR-based signal detector by using based on gauss-seidel method for large-scale MIMO systems [PDF]
, 2023 Chengjun Duan
openalex +1 more source