Results 21 to 30 of about 1,611 (240)
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.
Shinya Sugiura +2 more
openaire +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
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
A Simple Dispersion Matrix Design Method for Generalized Space-Time Shift Keying
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2015 Zhigang Chen, Guomei Zhang
exaly +2 more sources
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
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.
Marco Driusso +3 more
openaire +2 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
Joint Time Index Modulation and Receive Antenna Selection for RIS-Aided Communications
IEEE 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
IEEE 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