Results 231 to 240 of about 52,737 (255)

On the Estimation of Slow-Fading Coefficients for Pilot Contamination Precoding

2014 IEEE 79th Vehicular Technology Conference (VTC Spring), 2014
Massive multiple-input multiple-output (MIMO) has been actively studied for next generation wireless systems since it can provide high data rate and an improved energy efficiency in multiuser systems using large antenna arrays at base stations (BSs).
Jinho Choi 0001, Jeongseok Ha
openaire   +1 more source

Detection of Pilot Contamination Attack in Massive MIMO System

2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018
In this work, we present low complexity method to detect pilot contamination attack (PCA) by eavesdropper (Eve) on legitimate user (LU) in massive MIMO (MaMIMO) systems. In PCA, Eve transmits pilot signal in synchronization with LU to steer partial beam towards Eve.
Muhammad Hassan, Awais Ahmed, Muhammad Zia   +2 more
openaire   +1 more source

Bacterial Contamination of Inhalation Chambers: Results of a Pilot Study

Journal of Aerosol Medicine, 2004
Spacers are used in the treatment of children with asthma. It is advised to clean the spacers regularly. However, cleaning can influence drug delivery. One obvious reason to clean a spacer is prevention of bacterial contamination. Whether spacers are contaminated or not is unknown.
Tjalling W, de Vries, Siemon R, Rienstra, Eric R, van der Vorm   +2 more
openaire   +2 more sources

Pilot contamination mitigation in TDD massive MIMO systems

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2017
Massive multiple-input multiple-output (MIMO) systems are expected to achieve significant gains in both energy and spectral efficiency compared to conventional MIMO systems. However, these promising gains are limited by the impact of pilot contamination in TDD multicell massive MIMO.
Makram Alkhaled, Emad Alsusa, Ammar Hadi, Abdurrahman Alfitouri   +3 more
openaire   +1 more source

Fog Massive MIMO with On-the-Fly Pilot Contamination Control

2018 IEEE International Symposium on Information Theory (ISIT), 2018
This paper considers a new architecture underpinned by on-the-fly pilot contamination control, termed Fog massive MIMO, where the users are able to establish high-throughput and low-latency data links in a seamless and opportunistic manner, as they travel through a dense fog of high capacity Remote Radio Heads (RRHs).
Ratheesh Kumar Mungara, Giuseppe Caire, Ozgun Y. Bursalioglu, Chenwei Wang 0001, Haralabos C. Papadopoulos   +4 more
openaire   +1 more source

Pilot Contamination Reduction for Access Point Clustering-based Pilot Assignment

2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2023
Mariam Mussbah, Stefan Schwarz, Markus Rupp   +2 more
openaire   +1 more source

Large-Scale MIMO Pilot Contamination: Deep Learning-Assisted Pilot Assignment Scheme

Wireless Personal Communications, 2022
Mudassir Masood
exaly  

Pilot contamination in context-aware pilot-based opportunistic communications

2018
The increasing demand of high data-rate services and the unstoppable growth of communicating interfaces are two important features of next-era wireless communications. Albeit some strategies have recently arisen to deal with these issues, the necessity of channel state information is still essential to guarantee the desired performance.
openaire   +1 more source

Pilot Contamination Attack

2020
openaire   +1 more source

Partial Pilot Allocation Scheme in Multi-Cell Massive MIMO Systems for Pilot Contamination Reduction

Energies, 2020
Nor Kamariah Noordin, Aduwati Sali, Safwan M Ghaleb   +2 more
exaly