Results 41 to 50 of about 3,472,430 (240)
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
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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 +5 more
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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 +2 more
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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 +2 more
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IEEE AccessMassive 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 +5 more
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Alternative Awaiting and Broadcast for Two-Way Relay Fading Channels [PDF]
, 2012 We investigate a two-way relay (TWR) fading channel where two source nodes wish to exchange information with the help of a relay node. Given traditional TWR protocols, transmission rates in both directions are known to be limited by the hop with lower ...
Jianquan Liu +3 more
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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 +4 more
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On the MIMO Capacity with Residual Transceiver Hardware Impairments [PDF]
, 2014 Radio-frequency (RF) impairments in the transceiver hardware of communication systems (e.g., phase noise (PN), high power amplifier (HPA) nonlinearities, or in-phase/quadrature-phase (I/Q) imbalance) can severely degrade the performance of traditional ...
Björnson, Emil +4 more
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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 +3 more
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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 +4 more
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