Results 31 to 40 of about 50,793 (224)

Precoding and Beamforming Techniques in mmWave-Massive MIMO: Performance Assessment

open access: yesIEEE Access, 2022
Massive MIMO and mmWave communication are the technologies for achieving 5G design goals. Fortunately, these two technologies share a symbiotic integration.
Tewelgn Kebede   +4 more
doaj   +1 more source

Minimum ber block precoders for zero-forcing equalization [PDF]

open access: yesIEEE Transactions on Signal Processing, 2003
We determine the linear precoder that minimizes the bit error rate (BER) at moderate-to-high signal-to-noise ratios (SNRs) for block transmission systems with zero-forcing (ZF) equalization and threshold detection. The design is developed for the two standard schemes for eliminating inter-block interference, viz, zero padding (ZP) and cyclic prefix (CP)
null Yanwu Ding   +3 more
openaire   +2 more sources

Antenna Selection and Precoding Joint Algorithm in CoMP System [PDF]

open access: yesJisuanji gongcheng, 2017
Aiming at the problem that too many antennas of large-scale Multiple Input Multiple Output(MIMO) system increases the amount of calculation of precoding algorithm,this paper adopts the method combining antenna selection algorithm with traditional ...
CHANG Youbao,GE Wenping,HAN Qianfang
doaj   +1 more source

Rate-Maximizing Zero-Forcing Hybrid Precoder for MU-MISO-OFDM

open access: yesIEEE Access, 2023
Hybrid precoders, consisting of an analog hardware-constrained part operating at radio frequency (RF) and a digital part operating at baseband, reduce the RF implementation complexity and power consumption of multi-antenna transceivers, at the expense of some rate loss compared to an all-digital precoder.
Sander Cornelis   +2 more
openaire   +3 more sources

Hybrid precoding based on distributed partially-connected structure for multiuser massive MIMO

open access: yesTongxin xuebao, 2022
For multiuser massive multiple-input multiple-output (MIMO) systems, to solve the problem of underutilized spatial resources caused by centralized partially-connected structure (PCS) and fixed-matching phase-control algorithm in conventional schemes, a ...
Lei ZHANG, Qin WANG
doaj   +2 more sources

Low‐complexity unsupervised learning‐based hybrid precoding for massive MIMO systems

open access: yesIET Communications, 2023
Hybrid precoding can significantly reduce the number of required radio frequency (RF) chains in massive MIMO systems. However, due to the large number of antennas and the high‐dimensional channel, the existing hybrid precoding algorithms usually require ...
Xiang Liu
doaj   +1 more source

General analysis of multiuser MIMO systems with regularized zero-forcing precoding under spatially correlated Rayleigh fading channels

open access: green2016 IEEE International Conference on Communications (ICC), 2016
Harsh Tataria   +3 more
openalex   +3 more sources

A combinatorial precoding scheme of cell‐free massive MIMO with channel aging

open access: yesIET Communications, 2022
Here, we investigate the precoding schemes for the downlink data transmission of a time‐division duplex cell‐free massive multiple‐input multiple‐output (MIMO) system with channel aging, which arises from the user mobility.
Hao Fang   +4 more
doaj   +1 more source

Hybrid Precoding Scheme of UAV-Assisted Multi-User MIMO Millimeter Wave Network [PDF]

open access: yesJisuanji gongcheng, 2021
A hybrid precoding scheme is designed for the Unmanned Aerial Vehicle(UAV)-assisted multi-user downlink communication scenario of millimeter Wave(mmWave) network.
JI Pengshan, JIA Xiangdong, LU Yi, JING Letian
doaj   +1 more source

Low Complexity Precoding Based on Lanczos Method in Massive MIMO System [PDF]

open access: yesJisuanji gongcheng, 2019
Aiming at the problem that the computational complexity of the required matrix inversion of Zero Forcing(ZF) precoding matrix is very high due to the large number of antennas and users in large-scale MIMO systems,a low complexity ZF precoding scheme ...
CAO Haiyan,ZHOU Dong,FANG Xin,WANG Xiumin
doaj   +1 more source

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