Results 21 to 30 of about 48,136 (224)

A Low Complexity Precoding Algorithm for Large-scale MIMO System [PDF]

open access: yesJisuanji gongcheng, 2019
In large-scale Multiple-Input Mutiple-Output(MIMO) system,the increase in the number of antennas and users on the base station side leads to an increase in the dimension of the channel matrix,which increases the computational complexity of the precoding ...
ZHU Guohui,CHEN Xing
doaj   +1 more source

User-Centric Cell-Free and Co-Located Cellular Large Scale MU-MIMO Systems: A Comparative Performance Study With Spatial Channel Correlation in Dense Urban Scenario

open access: yesIEEE Access, 2022
Large Scale Multi-user MIMO (LS-MU-MIMO) is a promising technology for the fifth-generation (5G) and beyond wireless systems. It offers several magnitudes of improvement in data rates and spectral efficiency (SE) due to its ability to suppress the ...
Amr A. Alammari   +2 more
doaj   +1 more source

Large-Scale MIMO Detection for 3GPP LTE: Algorithms and FPGA Implementations [PDF]

open access: yes, 2014
Large-scale (or massive) multiple-input multiple-output (MIMO) is expected to be one of the key technologies in next-generation multi-user cellular systems, based on the upcoming 3GPP LTE Release 12 standard, for example.
Cavallaro, Joseph R.   +5 more
core   +1 more source

Iterative Signal Detection for Large-Scale GSM-MIMO Systems [PDF]

open access: yesIEEE 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

Low-Complexity Transmit Antenna Selection and Beamforming for Large-Scale MIMO Communications

open access: yesInternational 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

Virtual Large-Scale Array Beamforming Analysis Using Measured Subarray Antenna Patterns

open access: yesIEEE 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

Selection Based List Detection With Approximate Matrix Inversion for Large-Scale MIMO Systems

open access: yesIEEE 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

Performance Analysis of 3D Massive MIMO Cellular Systems with Collaborative Base Station

open access: yesInternational 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

open access: yesIEEE 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

Low-Complexity Compressed Sensing Downlink Channel Estimation for Multi-Antenna Terminals in FDD Massive MIMO Systems

open access: yesIEEE Access, 2020
In frequency division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, the overhead of downlink channel estimation is complex in terms of the pilot overhead, the calculation cost and the estimation process. In this paper, we propose
Danfeng Zhao, Tongzhou Han
doaj   +1 more source

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