Results 1 to 10 of about 220,563 (256)

Optimized Design of Distributed Quasi-Cyclic LDPC Coded Spatial Modulation [PDF]

open access: yesSensors, 2023
We propose a distributed quasi-cyclic low-density parity-check (QC-LDPC) coded spatial modulation (D-QC-LDPCC-SM) scheme with source, relay and destination nodes. At the source and relay, two distinct QC-LDPC codes are used.
Chunli Zhao   +4 more
doaj   +2 more sources

Spatial modulation of visual responses arises in cortex with active navigation [PDF]

open access: yeseLife, 2021
During navigation, the visual responses of neurons in mouse primary visual cortex (V1) are modulated by the animal’s spatial position. Here we show that this spatial modulation is similarly present across multiple higher visual areas but negligible in ...
E Mika Diamanti   +6 more
doaj   +2 more sources

Demonstration of Spatial Modulation Using a Novel Active Transmitter Detection Scheme with Signal Space Diversity in Optical Wireless Communications [PDF]

open access: yesSensors, 2022
Line-of-sight (LOS) indoor optical wireless communications (OWC) enable a high data rate transmission while potentially suffering from optical channel obstructions.
Tingting Song   +2 more
doaj   +2 more sources

A Generalized Spatial Modulation System Using Massive MIMO Space Time Coding Antenna Grouping [PDF]

open access: yesEntropy, 2020
Massive multiple input multiple output (MIMO), also known as a very large-scale MIMO, is an emerging technology in wireless communications that increases capacity compared to MIMO systems.
Amira I. Zaki   +3 more
doaj   +2 more sources

Device-to-Device Aided Cooperative Relaying Scheme Exploiting Spatial Modulation: An Interference Free Strategy [PDF]

open access: yesSensors, 2020
In this paper, a novel interference free dual-hop device-to-device (D2D) aided cooperative relaying strategy (CRS) based on spatial modulation (SM) (termed D2D-CRS-SM) is proposed.
Md. Shahriar Kamal   +3 more
doaj   +2 more sources

Spatial Modulation and MP-WFRFT-Aided Multi-Beam Wireless Communication Scheme Based On Random Frequency Diverse Array [PDF]

open access: yesSensors, 2020
A security-enhanced, spectral-efficient, and power-efficient multi-beam wireless communication scheme based on random frequency diverse array (RFDA) is proposed in this paper. (AN)-aided directional modulation (DM) schemes.
Jianbang Gao, Bin Qiu, Jing Zhou
doaj   +2 more sources

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

High-Precision Adjustment of Welding Depth during Laser Micro Welding of Copper Using Superpositioned Spatial and Temporal Power Modulation

open access: yesJournal of Manufacturing and Materials Processing, 2021
For joining metallic materials for battery applications such as copper and stainless steel, laser beam micro welding with beam sources in the near-infrared range has become established in recent years.
Marc Hummel   +2 more
doaj   +1 more source

Multi-Set Space-Time Shift-Keying With Reduced Detection Complexity

open access: yesIEEE Access, 2016
In this paper, we propose a novel multi-set space-time shift keying (MS-STSK) technique, where the source bits are conveyed over two components, namely, by activating one out of MQ dispersion matrices of STSK and M antenna combination of the Nt available
Ibrahim A. Hemadeh   +3 more
doaj   +1 more source

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