Results 61 to 70 of about 20,358 (233)
, 2013 —In this contribution, we investigate the signal detection in the multicarrier direct-sequence code-division multiple-access (DS-CDMA) systems employing both time (T)-domain and frequency (F)-domain spreading, which are referred to as the TF/MC DS-CDMA ...
Zhang, Youguang +5 more
core +1 more source
Low complexity uplink multiuser MIMO detecting algorithm
Tongxin xuebao, 2010 Aiming at the uplink multiuser MIMO system,a new space-time detecting algorithm was proposed,in which a linear recombination strategy was imposed on the received signal first,and then the matched filter vectors orthogonal to each users’ interference sets
HEI Yong-qiang1 +3 more
doaj
A Comparison of CP-OFDM, PCC-OFDM and UFMC for 5G Uplink Communications
IEEE Access, 2019 Polynomial-cancellation-coded orthogonal frequency division multiplexing (PCC-OFDM) is a form of OFDM that has waveforms which are very well localized in both the time and frequency domains and so it is ideally suited for use in the 5G network.
Gayathri Kongara +3 more
doaj +1 more source
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 5, Page 498-507, June 2026.We demonstrated that Awaous tajasica performs facultative air breathing under experimental conditions of dissolved oxygen limitation, retaining air bubbles in the buccal cavity during gill ventilation. Morpho‐functional evidence indicates the use of atmospheric oxygen as a respiratory support under conditions of low water oxygenation.
João Pedro Trevisan +3 more
wiley +1 more source
Laser Sintering and Optical Characterization of LuAG: Ce Ceramics
physica status solidi (b), Volume 263, Issue 6, June 2026.Additive‐free densification of LuAG:Ce ceramics is achieved via CO2 laser sintering within seconds, producing high‐density and homogeneous microstructures compared to conventional processing. However, laser‐sintered samples exhibit enhanced oxygen vacancy concentrations, leading to reduced photoluminescence intensity and a red shift in emission.
Eliane Pinheiro Silva +8 more
wiley +1 more source
Genetic-Algorithm-Assisted Multiuser Detection in Asynchronous CDMA Communications
, 2004 —In an asynchronous direct-sequence code-division multiple-access, a specific bit of the reference user is interfered by two asynchronously arriving surrounding bits of all the other users supported by the system.
YEN, K., HANZO, L.
core
Generalised vector precoding design based on the MBER criterion for multiuser transmission
, 2010 A generalised vector precoding (VP) design based on the minimum bit error rate (MBER) criterion is proposed for multiuser transmission in the downlink of a multiuser system where the base station (BS) equipped with multiple transmit antennas communicates
W. Yao +5 more
core +1 more source
MBER Turbo Multiuser Beamforming Aided QPSK Receiver Design using EXIT Chart Analysis [PDF]
, 2007 This paper studies the mutual information transfer characteristics of a novel iterative soft interference cancellation (SIC) aided beamforming receiver designed for quadrature phase shift keying (QPSK) modulated systems communicating over additive white ...
Tan, S. +5 more
core +1 more source
Complexity Reduction in RIS Optimization: A User Grouping and Adaptive Beamforming Approach
IEEE AccessThis paper addresses a critical challenge of high computational complexity in the optimization of reconfigurable intelligent surfaces (RISs), a bottleneck that currently prevents real-time implementation in practical wireless networks. Existing iterative
Muteen Munawar +2 more
doaj +1 more source
Dimensionality‐Driven Emerging Phenomena in Hybrid Metal Halides
Small Structures, Volume 7, Issue 6, June 2026.Emergent Phenomena Governed by Octahedral Connectivity and Dimensionality. Hybrid metal halides are unique among semiconductors in that their inorganic octahedral networks can be rationally assembled in 3D, 2D, 1D, and 0D forms, enabling dimensionality to assist as a powerful control knob over structure, electronic properties, excitations, and ...
José R. Franca +5 more
wiley +1 more source