Results 11 to 20 of about 4,468,856 (284)
Blind Compressed Sensing Parameter Estimation of Non-cooperative Frequency Hopping Signal
Leida xuebao, 2016 To overcome the disadvantages of a non-cooperative frequency hopping communication system, such as a high sampling rate and inadequate prior information, parameter estimation based on Blind Compressed Sensing (BCS) is proposed.
Chen Ying, Zhong Fei, Guo Shuxu
doaj +2 more sources
Blind Joint Soft-Detection Assisted Slow Frequency-Hopping Multicarrier DS-CDMA [PDF]
, 2000 A novel multiple-access scheme based on slow frequency-hopping multicarrier direct-sequence, code-division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrow-band ...
Yang, L-L., Hanzo, L.
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Scheme and experiment of fast frequency hopping communication system based on SDR
Tongxin xuebao, 2022 A fast frequency hopping scheme based on SDR was proposed to solve the problem that the existing fast frequency hopping communication system relied on satellite timing.Firstly, a true random sequence was used to perform frequency hopping operation on the
Chengyu WEN +3 more
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Multi-group frequency hopping OFDMA based on statistical multiplexing [PDF]
, 2008 In this paper, the multi-group frequency hopping OFDMA (MG-FH OFDMA) based on the statistical multiplexing is proposed for the downlink cellular system. Compared with the existed random frequency hopping OFDMA (RFH-OFDMA) system utilizing the statistical
Su, Xinghui +9 more
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Analysis of repeater jamming of a slow frequency hopping radio
Vojnotehnički Glasnik, 2022 Introduction/purpose: The article presents a model of a slow frequency hopping radio in the case of repeater jamming. The aim is to analyze the effectiveness of repeater jamming to a military tactical slow frequency hopping radio.
Nenad M. Stojanović +2 more
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Applied Sciences, 2020 We consider the direction of arrival (DOA) estimation of the frequency hopping (FH) signal. The frequency hopping (FH) signal has been widely used for communication to control UAVs.
Chan-Bin Ko, Joon-Ho Lee
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IEEE Photonics Journal, 2022 We demonstrate the use of a self-injection locked distributed feedback (DFB) diode laser for high-sensitivity detection of acoustic emission (AE) using a fiber-coil Fabry-Perot interferometer (FPI) sensor.
Farzia Karim +3 more
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Towards Real Time Interception of Frequency Hopping Signals [PDF]
2020 IEEE Workshop on Signal Processing Systems (SiPS), 2020 Securing data transmission aims at preventing unauthorized interceptors from accessing sensitive data. To that end, Transmission Security (TRANSEC) defines several security techniques for physical layer and cryptography. Among those techniques, Frequency Hopping (FH) transmission rapidly changes the carrier frequency over many distinct channels ...
Corentin Lavaud +5 more
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A Novel Optical Frequency-Hopping Scheme for Secure WDM Optical Communications
IEEE Photonics Journal, 2015 A novel optical frequency-hopping scheme in wavelength-division multiplexing (WDM) systems is proposed to achieve secure communications with high capacity. Frequency hopping is realized by the hopping of digital signals among different channels.
Sun Long Wang +5 more
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Bit error simulation of DQPSK for a slow frequency hopping CDMA system in mobile radio communications [PDF]
, 1995 Spread spectrum (SS) techniques seem to be an attractive alternative to conventional narrow-band modulation. In this paper a frequency hopping (FH) system model based on slow FH (SFH) is proposed.
Mortazavi, SH +3 more
core +1 more source