Results 191 to 200 of about 613,083 (218)

Spatial modulation for massive MIMO

2015 IEEE International Conference on Communications (ICC), 2015
Multiple-input multiple-output (MIMO) systems can increase wireless link capacity without requiring additional bandwidth and power. On the one hand, MIMO systems heavily depend on channel state information (CSI) at the receiver. It has also been shown that CSI at the transmitter (CSIT) can improve the link capacity and reliability considerably but with
Dushyantha A. Basnayaka, Harald Haas
openaire   +1 more source

Massive MIMO

2020
Massive multiple-input multiple-output (MIMO) technology has become one of the key technologies for fifth generation (5G) wireless systems and beyond due to its potential to offer high spectral efficiency simultaneously to many users, with simple signal processing. These remarkable gains are obtained through the use of many antennas at the base station
openaire   +2 more sources

Massive MIMO for mmWave systems

2014 48th Asilomar Conference on Signals, Systems and Computers, 2014
The large bandwidths available at the millimeter wave (mmWave) carrier frequencies (e.g., 30–100 GHz) have sparked significant interest in developing cellular systems in those bands to meet the ever-increasing demand for high data rates. Large-scale antenna arrays with tens or hundreds of antennas are envisioned to be a prerequisite for operating in ...
Frederick W. Vook, Timothy A. Thomas, Eugene Visotsky   +2 more
openaire   +1 more source

Massive MIMO in sparse channels

2014 IEEE 15th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2014
Massive multi-user multiple-input multiple-output (MU-MIMO) systems are cellular networks where the base stations (BSs) are equipped with hundreds of antennas, N, and communicate with tens of mobile stations (MSs), K, such that, N » K » 1. Contrary to most prior works, in this paper, we consider the uplink of a single-cell massive MIMO system operating
Nikolaos Kolomvakis, Michail Matthaiou, Mikael Coldrey   +2 more
openaire   +2 more sources

User Scheduling in Massive MIMO

2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2018
Massive MIMO relies on nearly orthogonal user channels to achieve unprecedented spectral efficiency. But in LoS (line-of-sight) environment, some users can be subjected to similar channel vectors. Serving users with similar channel vectors simultaneously can severely compromise the throughput performance to all users.
openaire   +1 more source

Massive MIMO NOMA Downlink

2018 IEEE Global Communications Conference (GLOBECOM), 2018
The performance of multi-cell massive multiple- input multiple-output (MIMO) downlink (DL) with nonorthogonal multiple access (NOMA) is investigated. A novel pilot assignment for NOMA users is proposed to mitigate intra-cluster pilot contamination and to alleviate the detrimental impact of inter-cluster in the useful operating regime.
Dhanushka Kudathanthirige, Gayan Amarasuriya   +1 more
openaire   +2 more sources

User-Centric Cell-Free Massive MIMO Networks: A Survey of Opportunities, Challenges and Solutions

IEEE Communications Surveys and Tutorials, 2022
Shahram Shahbazpanahi, Hussein Ammar, Raviraj S Adve   +2 more
exaly  

An Overview of Massive MIMO for 5G and 6G

IEEE Latin America Transactions, 2022
Felipe Augusto Pereira de Figueiredo
exaly  

Massive MIMO Techniques for 5G and Beyond—Opportunities and Challenges

Electronics (Switzerland), 2021
Paulo Montezuma Carvalho, Marko Beko, David Borges   +2 more
exaly  

PRECODING OF MASSIVE MIMO

2020
WANG LIJUN, MAO WEIQIANG
openaire   +3 more sources