Results 21 to 30 of about 26,068 (175)
Sparse Space Shift Keying Modulation with Enhanced Constellation Mapping
Sensors, 2022 For reducing the switching frequency between the radio frequency (RF) chain and transmit antennas, a class of new sparse space shift keying modulation (SSSK) schemes are presented.
Tiebin Wang +3 more
doaj +1 more source
A Janus compatible software-defined underwater acoustic multiple-input multiple-output modem
International Journal of Distributed Sensor Networks, 2021 This article describes the implementation of a multiple-input multiple-output acoustic communication link in shallow water conditions to enable a software-defined acoustic modem with a maximum transmission rate of 20 kbps in a 5-kHz bandwidth.
Surinder Singh +3 more
doaj +1 more source
Improved Frequency Sweep Keying CDMA Using Faster R-CNN for Extended Ultrasonic Crosstalk Reduction
Sensors, 2023 Ultrasonic sensors are inexpensive and provide highly accurate measurements, even with simple hardware configurations, facilitating their use in various fields.
Ga-Rin Park +2 more
doaj +1 more source
Reduced-Complexity QAM-Aided Space-Time Shift Keying [PDF]
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011 A novel reduced-complexity near-optimal detection algorithm is proposed for enhancing the recent coherently-detected Space-Time Shift Keying (STSK) scheme employing arbitrary constellations, such as L-point Phase-Shift Keying (PSK) and Quadrature Amplitude Modulation (QAM). The proposed detector relies on a modified Matched Filter (MF) concept.
Sugiura, Shinya, Xu, Chao, Hanzo, Lajos
openaire +2 more sources
Frequency Sweep Keying CDMA for Reducing Ultrasonic Crosstalk
Sensors, 2022 Various sensors are embedded in automobiles to implement intelligent safety technologies such as autonomous driving and front–rear collision avoidance technology.
Ga-Rin Park +2 more
doaj +1 more source
Joint-Alphabet Space Time Shift Keying in mm-Wave Non-Orthogonal Multiple Access
IEEE Access, 2018 Flexible modulation schemes and smart multiple-input multiple-output techniques, as well as low-complexity detectors and preprocessors may become essential for efficiently balancing the bit error ratio performance, throughput, and complexity tradeoff for
Panagiotis Botsinis +8 more
doaj +1 more source
Generalized PSK in Space Time Coding [PDF]
, 2004 A wireless communication system using multiple antennas promises reliable transmission under Rayleigh flat fading assumptions. Design criteria and practical schemes have been presented for both coherent and non-coherent communication channels.
Han, Guangyue
core +3 more sources
Soft-Decoding for Multi-Set Space-Time Shift-Keying mmWave Systems: A Deep Learning Approach
IEEE 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
Advanced 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
OFDM Aided Space-Time Shift Keying for Dispersive Downlink Channels [PDF]
2012 IEEE Vehicular Technology Conference (VTC Fall), 2012 The performance of a Space-Time Shift Keying (STSK) scheme was shown to degrade in frequency-selective fading channels. Hence, we propose Orthogonal Frequency Division Multiplexing (OFDM) combined with STSK for frequency-selective broadband channels. Furthermore, we consider both an uncoded and a near-capacity coded scenario.
DRIUSSO, MARCO +3 more
openaire +3 more sources