Results 31 to 40 of about 14,777 (220)

Linear Precoding With Low-Resolution DACs for Massive MU-MIMO-OFDM Downlink [PDF]

, 2019
We consider the downlink of a massive multiuser (MU) multiple-input multiple-output (MIMO) system in which the base station (BS) is equipped with low-resolution digital-to-analog converters (DACs). In contrast to most existing results, we assume that the
Durisi, Giuseppe,, Studer, Christoph, Studer, Christoph,, Coldrey, Mikael, Jacobsson, Sven, Durisi, Giuseppe, Coldrey, Mikael,, Jacobsson, Sven,   +7 more
core   +1 more source

Direct Localization for Massive MIMO [PDF]

IEEE Transactions on Signal Processing, 2017
Large-scale MIMO systems are well known for their advantages in communications, but they also have the potential for providing very accurate localization thanks to their high angular resolution. A difficult problem arising indoors and outdoors is localizing users over multipath channels. Localization based on angle of arrival (AOA) generally involves a
Nil Garcia, Henk Wymeersch, Erik G. Larsson, Alexander M. Haimovich, Martial Coulon   +4 more
openaire   +5 more sources

Nonlinear 1-bit precoding for massive MU-MIMO with higher-order modulation [PDF]

, 2016
Massive multi-user (MU) multiple-input multiple-output (MIMO) is widely believed to be a core technology for the upcoming fifth-generation (5G) wireless communication standards. The use of low-precision digital-to-analog converters (DACs) in MU-MIMO base
Goldstein, Tom, Giuseppe Durisi, Durisi, Giuseppe,, Coldrey, Mikael, Goldstein, Tom,, Durisi, Giuseppe, Jacobsson, Sven,, Sven Jacobsson, Christoph Studer, Studer, Christoph, Studer, Christoph,, Tom Goldstein, Jacobsson, Sven, Mikael Coldrey, Coldrey, Mikael,   +14 more
core   +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, Qi, Feng, Wang, Jinkuan, Wang, Jiangzhou   +3 more
core   +1 more source

Hybrid antenna array for mmWave massive MIMO [PDF]

, 2017
© 2017 Elsevier Inc. All rights reserved. This chapter introduces the massive hybrid array architecture, where antenna elements are grouped into multiple analog subarrays, and a single digital signal is received from or sent to each subarray. It provides
Dyadyuk, V, Guo, YJ, Huang, X, V. Dyadyuk, J.A. Zhang, Zhang, JA, X. Huang, Y. Jay Guo   +7 more
core   +3 more sources

1-bit Massive MU-MIMO Precoding in VLSI [PDF]

, 2017
Massive multi-user (MU) multiple-input multiple-output (MIMO) will be a core technology in fifth-generation (5G) wireless systems as it offers significant improvements in spectral efficiency compared to existing multi-antenna technologies.
Goldstein, T., Studer, C., Giuseppe Durisi, Goldstein, Tom, Goldstein, T.,, Durisi, Giuseppe,, Studer, Christoph; id_orcid, Coldrey, Mikael, Castaneda, Oscar,, Durisi, Giuseppe, Castaneda, Oscar, Jacobsson, Sven,, Coldrey, M., Sven Jacobsson, Christoph Studer, Studer, Christoph, Studer, Christoph,, Oscar Castaneda, Castaneda, O., Tom Goldstein, Jacobsson, Sven, Mikael Coldrey, Castañeda Fernández, Oscar; id_orcid, Coldrey, Mikael,   +23 more
core   +1 more source

Multi-Panel Sparse Base Station Design with Physical Antenna Effects in Massive MU-MIMO [PDF]

, 2020
A novel base station antenna (BSA) configuration is presented to mitigate degrading physical antenna effects in massive multiple-input multiple-output (MIMO) systems, while minimizing implementation complexities.
Ivashina, Marianna, Amani, Navid,, Amani, Navid, Wymeersch, Henk,, Wymeersch, Henk, Maaskant, Rob,, Johannsen, Ulf,, Maaskant, Rob, Smolders, A. Bart,, Ivashina, Marianna,, Smolders, A. Bart, Johannsen, Ulf   +11 more
core   +1 more source

Orbital-Angular-Momentum Embedded Massive MIMO: Achieving Multiplicative Spectrum-Efficiency for mmWave Communications

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, Hailin Zhang, Liping Liang, Haiyue Jing, Zan Li   +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, Sugiura, S., Di Renzo, Marco, Haas, Harald, Hanzo, Lajos, Ghrayeb, Ali, Ali Ghrayeb, Marco Di Renzo, Sugiura, Shinya, Ghrayeb, A., Shinya Sugiura, Harald Haas, Hanzo, L., Lajos Hanzo   +13 more
core   +1 more source

Unified MIMO-multicarrier designs: a space–time shift keying approach [PDF]

, 2015
A survey and tutorial is provided on the subject of multiple-input multiple-output (MIMO) multicarrier (MC) systems relying on the space-time shift keying concept.
Sugiura, Shinya, Chen, Sheng, Kadir, Mohammad Ismat, Hanzo, Lajos   +3 more
core   +1 more source