Results 21 to 30 of about 1,754 (179)

Modeling and analysis of ergodic capacity in network MIMO systems [PDF]

2014 IEEE Globecom Workshops (GC Wkshps), 2014
This paper studies the downlink ergodic capacity of a network multiple-input multiple-output (MIMO) system. The system model includes base-stations (BSs) randomly distributed with a fixed density, each equipped with M antennas, scheduling K single-antenna users, and forming cooperating clusters via perfect backhaul links.
Kianoush Hosseini, Wei Yu 0001, Raviraj S. Adve   +2 more
openaire   +1 more source

Eigenstructures of MIMO Fading Channel Correlation Matrices and Optimum Linear Precoding Designs for Maximum Ergodic Capacity

EURASIP Journal on Advances in Signal Processing, 2007
The ergodic capacity of MIMO frequency-flat and -selective channels depends greatly on the eigenvalue distribution of spatial correlation matrices. Knowing the eigenstructure of correlation matrices at the transmitter is very important to enhance the ...
Bahrami Hamid Reza, Le-Ngoc Tho
doaj   +2 more sources

Phase Noise Cancelation Based on Polarization Modulation for Massive MIMO-OFDM Systems

International Journal of Antennas and Propagation, 2019
In massive multiple-input multiple-output (MIMO) systems, phase noise introduced by oscillators can cause severe performance loss. It leads to common phase error and intercarrier interference in massive MIMO-OFDM uplink. To solve the issue, a novel phase
Yao Nie, Chunyan Feng, Huan Wu, Fangfang Liu, Caili Guo, Maosheng Fu   +5 more
doaj   +1 more source

Cutset Bounds on the Capacity of MIMO Relay Channels

IEEE Access, 2017
We analyze the ergodic capacity of multiple-input multiple-output (MIMO) Rayleigh-fading relay channels. We first derive the probability density function of a sum of independent complex central Wishart matrices-called the central hyper-Wishart matrix-and
Youngmin Jeong, Dung Phuong Trinh, Hyundong Shin   +2 more
doaj   +1 more source

Ergodic Capacity of Generalized Fading Channels With Mobility

IEEE Open Journal of Vehicular Technology, 2022
In this paper, we consider the ergodicchannel capacity (ECC) of several generalized fading channels for a mobile user that moves inside a coverage area according to the random waypoint (RWP) mobility model.
Valentine A. Aalo, Petros S. Bithas, George P. Efthymoglou   +2 more
doaj   +1 more source

Secrecy capacity over correlated ergodic fading channel [PDF]

MILCOM 2008 - 2008 IEEE Military Communications Conference, 2008
We investigate the secrecy capacity of an ergodic fading wiretap channel in which the main channel is correlated with the eavesdropper channel. In this study, the full Channel State Information (CSI) is assumed, and thus the transmitter knows the channel gains of the legitimate receiver and the eavesdropper.
Hyoungsuk Jeon, Namshik Kim, Minki Kim, Hyuckjae Lee, Jeongseok Ha   +4 more
openaire   +2 more sources

Performance Analysis of Ergodic Rate and Effective Capacity for RIS-Assisted NOMA Networks Over Nakagami-m Fading Environments

IEEE Access
Massive connectivity and green communication will be important problems for the upcoming sixth generation (6G). Reconfigurable intelligent surfaces (RIS) and non-orthogonal multiple access (NOMA) have recently been presented as two major solutions to ...
Tran Cong Hung, Tan N. Nguyen, Vu Quang Sy, Anh-Tu Le, Bui Vu Minh, Miroslav Voznak   +5 more
doaj   +1 more source

Cognitive Radios with Ergodic Capacity Guarantees for Primary Users [PDF]

Proceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks, 2012
Cognitive radios implement adaptive resource allocation schemes that exploit knowledge of the channel state information to optimize the performance of the secondary users while limiting the interference to the primary users. The algorithms in this paper are designed to maximize the weighted sum-rate of secondary users which transmit orthogonally and ...
Antonio G. Marqués, Luis M. Lopez-Ramos, Javier Ramos 0001   +2 more
openaire   +1 more source

Downlink ergodic sum capacity maximisation for massive distributed antenna systems with SWIPT protocol

IET Communications, 2021
The paper investigates simultaneous wireless information and power transfer (SWIPT) in massive distributed antenna systems, where the remote radio heads (RRH) equipped with a large number of antennas are arbitrarily distributed over the coverage area and
Wenfeng Sun, Chen Liu, Mujun Qian, Shu Xu, Yan Chen   +4 more
doaj   +1 more source

Performance Analysis of Beamforming in MU-MIMO Systems for Rayleigh Fading Channels

IEEE Access, 2017
This paper characterizes the performance metrics of MU-MIMO systems under Rayleigh fading channels in the presence of both cochannel interference and additive noise with unknown channel state information and known correlation matrices. In the first task,
Ahmad Kamal Hassan, Muhammad Moinuddin, Ubaid M. Al-Saggaf, Tareq Y. Al-Naffouri   +3 more
doaj   +1 more source