Results 31 to 40 of about 18,141,497 (258)

Adaptive space-time shift keying systems [PDF]

open access: yes, 2010
Sugiura, Shinya   +3 more
core   +2 more sources

Soft-Decoding for Multi-Set Space-Time Shift-Keying mmWave Systems: A Deep Learning Approach

open access: yesIEEE Access, 2020
In this paper, we propose a deep learning assisted soft-demodulator for multi-set space-time shift keying (MS-STSK) millimeter wave (mmWave) systems, where we train a neural network (NN) to provide the soft values of the MS-STSK symbol without relying on
K. Satyanarayana   +4 more
doaj   +1 more source

Toward Sub‐Terahertz: Space‐Time Coding Metasurface Transmitter for Wideband Wireless Communications

open access: yesAdvanced Science, 2023
A space‐time coding metasurface (STCM) operating in the sub‐terahertz band to construct new‐architecture wireless communication systems is proposed. Specifically, a programmable STCM is designed with varactor‐diode‐tuned metasurface elements, enabling ...
Yujie Liu   +12 more
doaj   +1 more source

Reduced-RF-Chain Aided Soft-Decision Multi-Set Steered Space-Time Shift-Keying for Millimeter-Wave Communications

open access: yesIEEE Access, 2017
Soft-decision-aided multi-set steered space-time shift keying intrinsically amalgamated with channel coding is proposed in order to attain near capacity-performance.
Ibrahim A. Hemadeh   +4 more
doaj   +1 more source

Joint Time Index Modulation and Receive Antenna Selection for RIS-Aided Communications

open access: yesIEEE Access, 2023
In this paper, a novel design, named after time index modulation (TIM) with reconfigurable intelligent surface (RIS)-aided receive antenna selection (RAS), is proposed to improve the spectral efficiency (SE) and the bit error rate (BER) performance.
Fuchun Huang, Guangyu Wu, Xiaopin Wang
doaj   +1 more source

A novel space-time shift keying and its reduced complexity detector [PDF]

open access: yes2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC), 2012
This paper proposes a space-time shift keying (STSK) modulation scheme, which maps the information onto two dimensions, i.e., the temporal and spatial dimensions. For the proposed modulation, a detector with reduced complexity is also proposed. The complexity of proposed detector is reduced with the slight degradation of performance.
Han-Wen Liang   +2 more
openaire   +2 more sources

Hierarchical Multi-Functional Layered Spatial Modulation

open access: yesIEEE Access, 2018
In pursuit of optimal index modulation -aided multiple-input multiple-output (MIMO) systems, where information is implicitly conveyed by relying on the on/off mechanism of the system's components in addition to the classical amplitude, phase, or ...
Ibrahim A. Hemadeh   +2 more
doaj   +1 more source

Compressed Sensing-Aided Index Modulation Improves Space-Time Shift Keying Assisted Millimeter-Wave Communications

open access: yesIEEE Access, 2018
In this treatise, we present the concept of compressed-sensing (CS)-aided space-time shift keying index modulation (STSK-IM), where a virtual domain orthogonal frequency division multiplexing (OFDM) symbol is divided into Na-sized blocks, which carry K ...
Ibrahim A. Hemadeh   +3 more
doaj   +1 more source

Space-time coded systems with continuous phase frequency shift keying [PDF]

open access: yesGLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005
A space-time (ST) trellis encoded scheme with M-ary continuous phase frequency shift keying with a modulation index of 1/M (M-CPFSK) is presented. A ST-M-CPFSK system model that incorporates the Rimoldi decomposition of CPFSK is developed. The Rimoldi decomposition separates the non-memory component of CPFSK from the memory component. The latter can be
Rachel L. Maw, Desmond P. Taylor
openaire   +2 more sources

MULTIPATH FADING EFFECTS ON UNCODED AND CODED MULTIPLE FREQUENCY SHIFT KEYING PERFORMANCE IN MOBILE WIRELESS COMMUNICATIONS [PDF]

open access: yesJournal of Engineering and Sustainable Development, 2019
This paper presents an analysis of multipath fading channel effects on the performance of multiple frequency shift keying (MFSK) modulation that is used in mobile wireless communications.
Hassan Awheed Jeiad   +1 more
doaj   +2 more sources

Home - About - Disclaimer - Privacy