Results 11 to 20 of about 3,377 (112)

Double Antenna-Transitions Spatial Modulation Performance Evaluation Over Nakagami-m Wireless Fading Channels

open access: yesIEEE Access, 2021
Recently, a novel spatial modulation (SM) scheme; termed Mid-symbol Antenna transition (MAT) spatial modulation, was developed to reduce the number of utilized transmitting antennas and improve the average bit error rate (ABER) performance. In this paper,
Mohamed Arafa   +3 more
doaj   +1 more source

Effect of Synchronisation Error on Optical Spatial Modulation [PDF]

open access: yes, 2017
This paper examines the effect of synchronization error on the performance of spatial modulation (SM) technique in optical wireless communication (OWC) systems.
Olanrewaju, Hammed G., Popoola, Wasiu
core   +1 more source

Anti-Eavesdropping Scheme Based on Random Mapping for GSM-MBM Systems

open access: yesIEEE Access, 2020
Media-based modulation (MBM) is a recently proposed modulation scheme which has the advantages of increased spectral efficiency and improved performance.
Zhenzhen Gao   +3 more
doaj   +1 more source

Bayesian demosaicing using Gaussian scale mixture priors with local adaptivity in the dual tree complex wavelet packet transform domain [PDF]

open access: yes, 2013
In digital cameras and mobile phones, there is an ongoing trend to increase the image resolution, decrease the sensor size and to use lower exposure times. Because smaller sensors inherently lead to more noise and a worse spatial resolution, digital post-
Aelterman, Jan   +4 more
core   +1 more source

Low-complexity Lattice Reduction Aided Detection for Generalised Spatial Modulation [PDF]

open access: yes, 2016
Generalised spatial modulation (GSM) was first introduced with the maximum-likelihood (ML) optimum decoder. However, ML decoder may be infeasible for practical implementation due to its exponential complexity especially when the number of antennas or the
Bao, Y   +3 more
core   +1 more source

Analysis of cyclic delay diversity on DVB-H systems over spatially correlated channel [PDF]

open access: yes, 2007
The objective of this work is to research and analyze the performance of Cyclic Delay Diversity (CDD) with two transmit antenna on DVB-H systems operating in spatially correlated channel. It is shown in this paper that CDD can achieve desirable transmit
Bard, M   +4 more
core   +1 more source

Transmit Antenna Combination Optimization for Generalized Spatial Modulation Systems

open access: yesIEEE Access, 2018
Generalized spatial modulation (GSM), where both the transmit antenna combination (TAC) index and the amplitude phase modulation (APM) symbols convey information, is a novel low-complexity and high efficiency multiple-input multiple-output (MIMO ...
Lixia Xiao   +6 more
doaj   +1 more source

Error performance analysis of generalized quadrature spatial modulation using H-8QAM

open access: yesScientific Reports, 2022
Motivated to enhance the error performance (EP) of generalised complex quadrature spatial modulation (GCQSM) systems, this study proposes a scheme that builds on GCQSM and uses hexagonal quadrature amplitude modulation (H-QAM) constellations which have ...
Nathael Sibanda   +2 more
doaj   +1 more source

System-Level Assessment of a C-RAN based on Generalized Space–Frequency Index Modulation for 5G New Radio and Beyond

open access: yesApplied Sciences, 2022
Index modulation (IM) has been attracting considerable research efforts in recent years as it is considered a promising technology that can enhance spectral and energy efficiency and help cope with the rising demand of mobile traffic in future wireless ...
Vasco Velez   +6 more
doaj   +1 more source

Two-stage code reference beamformer in mobile communications [PDF]

open access: yes, 1998
This paper addresses a new architecture for blind adaptive beamforming when dealing with frequency hopping (FH) modulation in cellular mobile communications systems.
Lagunas Hernandez, Miguel A.   +2 more
core   +1 more source

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