Results 11 to 20 of about 7,150,681 (256)
Multi-Stage Multi-User Detection Assisted Asynchronous Fast-FH/MFSK [PDF]
, 2003 A multi-stage Multi-User Detection (MUD) scheme designed for asynchronous fast Frequency-Hopping/Multilevel Frequency-Shift-Keying (fast-FH/MFSK) systems is proposed, in which each signal detection interval is divided into sub-intervals and the MUD is ...
Hamaguchi, K., Hanzo, L.
core +2 more sources
Extremely low frequency based communication link [PDF]
, 2009 The paper discusses the literature review and the possibility of using the ground itself as transmission medium for various users’ transceivers and an administrator transceiver using Multi-Carrier-Direct Sequence-Code Division Multiple Access (MC-DS-CDMA)
Holmes, Violeta +3 more
core +4 more sources
Noncoherent Multi-Way Relay Based on Fast Frequency-Hopping M-ary Frequency-Shift Keying [PDF]
, 2010 Information exchange among a group of users is implemented with the aid of fast frequency-hopping $M$-ary frequency-shift keying multi-way relay (FFH/MFSK MWR). The FFH/MFSK MWR scheme uses two time-slots per symbol for achieving the information exchange,
Zhangdui Zhong +5 more
core +2 more sources
Multivariable Repetitive-predictive Controllers using Frequency Decomposition [PDF]
, 2012 Repetitive control is a methodology for the tracking of a periodic reference signal. This paper develops a new approach to repetitive control systems design using receding horizon control with frequency decomposition of the reference signal.
Rogers, E +7 more
core +2 more sources
Applied Sciences, 2016 This paper presents a novel tunable multi-frequency hybrid energy harvester (HEH). It consists of a piezoelectric energy harvester (PEH) and an electromagnetic energy harvester (EMEH), which are coupled with magnetic interaction.
Zhenlong Xu +3 more
doaj +1 more source
Advances in classical and analytical mechanics: A reviews of author’s results [PDF]
Theoretical and Applied Mechanics, 2013 A review, in subjective choice, of author’s scientific results in area of: classical mechanics, analytical mechanics of discrete hereditary systems, analytical mechanics of discrete fractional order system vibrations, elastodynamics, nonlinear ...
Hedrih-Stevanović Katica R.
doaj +1 more source
A computationally efficient multi-mode equaliser based on reconfigurable frequency domain processing [PDF]
, 2005 Broadband wireless communication systems requires that systems be designed to operate with high spectral efficiency in wideband channels. Such requirements make OFDM an attractive transmission technology due to the fact it exploits the computational ...
Beach, Mark A +3 more
core +1 more source
Remote Sensing, 2023 In the framework of maritime surveillance, vessel detection techniques based on spaceborne synthetic aperture radar (SAR) images have promoted extensive applications for the effective understanding of unlawful activities at sea.
Roberto Del Prete +2 more
doaj +1 more source
Remote Sensing, 2018 To reduce the floor space of receiving antenna arrays, the Radio Ocean Remote SEnsing (RORSE) laboratory of Wuhan University developed a circular receiving array for a multi-frequency high frequency (MHF) radar system in 2014, consisting of seven ...
Chen Zhao +5 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 This study was conducted to investigate the acoustic characteristics of largehead hairtails (Trichiurus japonicus) in the Southern Sea of South Korea from April 2022, using 18, 38, 70, 120, and 200 kHz split-beam echosounders.
Hyungbeen Lee +3 more
doaj +1 more source