Results 21 to 30 of about 2,823 (194)
Digital Communications and Networks, 2019 Quadrature Spatial Modulation (QSM) is a high spectral efficiency Multiple-Input Multiple Output (MIMO) technique used to improve the spectral efficiency of wireless communication systems. The main concept of QSM is to extend the spatial constellation of
Sherif K. El Dyasti +2 more
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Quadrature Index Modulation With Three-Dimension Constellation
IEEE Access, 2019 Quadrature spatial modulation (QSM) is a novel index modulation technology, which extends the antenna index (AI) to two dimensions of both in-phase AI and quadrature AI.
Fuchun Huang +4 more
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Computer-Generated Holography Methods for Data Page Reconstruction Using Phase-Only Medium
Applied Sciences, 2023 Achievements in the field of high-speed spatial modulation electrooptic components provide the possibility to create perspective optical-digital diffractive systems for information storage and processing that outperform modern electronic counterparts by ...
Timur Z. Minikhanov +4 more
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Space-time quadrature spatial modulation
2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2017 In this paper, a new multiple-input multiple-output (MIMO) transmission technique, which is called space-time quadrature spatial modulation (ST-QSM), is proposed. The ST-QSM scheme aims to provide a diversity gain for quadrature spatial modulation (QSM) by combining it with the Alamouti or ABBA space-time block codes (STBCs).
Zehra Yigit, Ertugrul Basar
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Fully Improved Quadrature Spatial Modulation
Arabian Journal for Science and Engineering, 2021 In this paper, novel space modulation techniques (SMT), which we called fully improved quadrature spatial modulation (FIQSM) and fully improved quadrature space shift keying (FIQSSK), are presented for multiple-input–multiple-output (MIMO) communication systems.
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IET Communications, 2022 Automatic modulation classification is a task that is essentially required in many intelligent communication systems such as fibre‐optic, next‐generation 5G or 6G systems, cognitive radio as well as multimedia internet‐of‐things networks etc.
Rahim Khan +7 more
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Spatial Permutation Modulation for Multiple-Input Multiple-Output (MIMO) Systems
IEEE Access, 2019 Spatial modulation (SM) for the multiple-input-multiple-output (MIMO) system has attracted research interests due to its high energy and spectral efficiency.
I-Wei Lai +6 more
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Generalized Quadrature Spatial Modulation Scheme Using Antenna Grouping
ETRI Journal, 2017 This paper presents a novel generalized quadrature spatial modulation (GQSM) transmission scheme using antenna grouping. The proposed GQSM scheme combines QSM and conventional spatial multiplexing (SMux) techniques in order to improve the spectral ...
Francisco Rubén Castillo‐Soria +4 more
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User Grouping and Power Allocation for Downlink NOMA-Based Quadrature Spatial Modulation
IEEE Access, 2020 Conventional non-orthogonal multiple access (NOMA)-based spatial modulation (SM) systems utilize only the real part of amplitude-phase modulation (APM) symbols for transmission, but quadrature spatial modulation (QSM) can extend this to two orthogonal ...
Zijie Hong +3 more
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Generalized Complex Quadrature Spatial Modulation [PDF]
Wireless Communications and Mobile Computing, 2019 Spatial modulation (SM) is a multiple-input multiple-output (MIMO) system that achieves a MIMO high spectral efficiency while maintaining the transmitter computational complexity and requirements as low as those of the single-input systems. The complex quadrature spatial modulation (CQSM) builds on the QSM scheme and improves the spectral efficiency by
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