Results 81 to 90 of about 50,793 (224)

Multiuser MIMO-OFDM for Visible Light Communications

IEEE Photonics Journal, 2015
Visible light communication (VLC) is emerging as a promising technique to provide ubiquitous wireless connection. In this paper, a multiuser VLC system utilizing multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) is ...
Qi Wang, Zhaocheng Wang, Linglong Dai
doaj   +1 more source

Performance analysis of linear precoders with imperfect channel covariance information for multicell system

The Journal of Engineering, 2020
Comparison and analysis of the regularised zero forcing precoder, rapid numerical algorithms-based precoder and the truncated polynomial expansion-based precoder are done for massive multiple-input multiple-output wireless system for multicell scenario ...
Emmanuel Mukubwa, Oludare A. Sokoya
doaj   +1 more source

Precoded Integer-Forcing Universally Achieves the MIMO Capacity to Within a Constant Gap [PDF]

, 2014
An open-loop single-user multiple-input multiple-output communication scheme is considered where a transmitter, equipped with multiple antennas, encodes the data into independent streams all taken from the same linear code.
Erez, Uri, Ordentlich, Or
core  

Efficient ZF-WF Strategy for Sum-Rate Maximization of MU-MISO Cognitive Radio Networks

, 2018
This article presents an efficient quasi-optimal sum rate (SR) maximization technique based on zero-forcing water-filling (ZFWF) algorithm directly applied to cognitive radio networks (CRNs).
Abrao, Taufik, Claudino, Lucas
core   +1 more source

Improved Linear Precoding over Block Diagonalization in Multi-cell Cooperative Networks [PDF]

, 2012
In downlink multiuser multiple-input multiple-output (MIMO) systems, block diagonalization (BD) is a practical linear precoding scheme which achieves the same degrees of freedom (DoF) as the optimal linear/nonlinear precoding schemes.
Guan, Yong Liang, Gunawan, Erry, Zeng, Yong   +2 more
core  

A Low Complexity Linear Precoding Method for Extremely Large-Scale MIMO Systems

IEEE Open Journal of Vehicular Technology
Massive multiple-input multiple-output (MIMO) systems are critical technologies for the next generation of networks. In this field of research, new forms of deployment are emerging, such as extremely large-scale MIMO (XL-MIMO), in which the antenna array
Salah Berra, Abderrazak Benchabane, Sourav Chakraborty, Kazuki Maruta, Rui Dinis, Marko Beko   +5 more
doaj   +1 more source

Multi-Cell Massive MIMO in LoS

, 2018
We consider a multi-cell Massive MIMO system in a line-of-sight (LoS) propagation environment, for which each user is served by one base station, with no cooperation among the base stations.
Larsson, Erik G., Ngo, Hien Quoc, Yang, Hong   +2 more
core   +1 more source

Noncausal Zero-Forcing Precoding Subject To Individual Channel Power Constraints

, 2012
Publication in the conference proceedings of EUSIPCO, Bucharest, Romania ...
Chai, Li, Li, Shenpeng, Zhang, Jingxin
openaire   +1 more source

Uplink Downlink Rate Balancing and throughput scaling in FDD Massive MIMO Systems

, 2015
In this work we extend the concept of uplink-downlink rate balancing to frequency division duplex (FDD) massive MIMO systems. We consider a base station with large number antennas serving many single antenna users.
Bergel, Itsik, Perets, Yona, Shamai, Shlomo   +2 more
core   +1 more source

Large System Analysis of Cooperative Multi-cell Downlink Transmission via Regularized Channel Inversion with Imperfect CSIT

, 2013
In this paper, we analyze the ergodic sum-rate of a multi-cell downlink system with base station (BS) cooperation using regularized zero-forcing (RZF) precoding.
Gao, Xiqi, Jin, Shi, Wen, Chao-Kai, Wong, Kai-Kit, Zhang, Jun   +4 more
core   +1 more source