Results 11 to 20 of about 511 (153)
Effective power analysis of multi-tone excitation transmitting system
The Journal of Engineering, 2019 Inter-modulation would occur when the transmitting system is under multi-tone excitation; therefore, the non-linear response of power amplifier unit should be considered in the system design.
Maogang Wei +3 more
doaj +2 more sources
Multidomain Narrowband Interference Intelligent Suppression Method Based on Cognitive Radio and MIMO in UAV Data Link. [PDF]
Comput Intell Neurosci, 2022 In this paper, a kind of antinarrowband interference intelligent method based on cognitive MIMO (multiple‐input multiple‐output) airspace, time domain, frequency domain, and code domain is proposed. This method combines perceptual technology, spread spectrum code, MIMO space‐time coding, and so on.
Luo X, You L, Lv J, Zhong C.
europepmc +2 more sources
Journal of Electronics & Information Technology, 2011 Yang Bao-ping, Chen Yong-guang
openalex +2 more sources
Efficient Open-Set Recognition for Interference Signals Based on Convolutional Prototype Learning
Applied Sciences, 2022 Interference classification plays an important role in anti-jamming communication. Although the existing interference signal recognition methods based on deep learning have a higher accuracy than traditional methods, these have poor robustness while ...
Xiangwei Chen +5 more
doaj +1 more source
Performance study of HF communication using NOMA over narrowband HF channel
IET Communications, Volume 17, Issue 14, Page 1683-1690, August 2023., 2023 The novelty of this research is to increase the bit rate on high frequency (HF) systems. Non‐orthogonal multiple access technique (NOMA) technology is used over HF at narrow band 3 kHz ranges. In order to have real experiments SDR Hack RF systems are used, and the results show improvement in bit rate up to 45%.
Ahmad Ismail, Kamal Mohamedpour
wiley +1 more source
Clinical Otolaryngology, Volume 48, Issue 2, Page 226-234, March 2023., 2023 Abstract Objectives Customised acoustic therapy aims to moderate the neural pathways implicated in the pathophysiology of tinnitus. This study aimed to assess the efficacy of customised acoustic therapy administered via a web‐based treatment platform. Design Clinical trial with prospective recruitment.
James Thomas Connell +9 more
wiley +1 more source
HydroMoth: Testing a prototype low‐cost acoustic recorder for aquatic environments
Remote Sensing in Ecology and Conservation, Volume 8, Issue 3, Page 362-378, June 2022., 2022 In this paper, we demonstrate the current lack of commercially available low‐cost aquatic sound recorders. We then test a prototype device that is twenty times cheaper than currently available hydrophones. Technology like this will open up the field of aquatic bioacoustics to people and organisations who have never before been able to listen underwater.
Timothy A. C. Lamont +13 more
wiley +1 more source
Analytical study of FFH systems with square-law diversity combining in the presence of multitone interference [PDF]
, 1999 An analytical study of the performance of fast frequency-hopped (FFH), M-ary orthogonal frequency-shift keyed noncoherent modulation with linear combining of square-law envelopes in the presence of multitone interference is presented.
Chen, J, Wang, J
core +4 more sources
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 Detecting increasing anomalous signals is critical to effective spectrum management due to the complexity of the use of electromagnetic spectrum. The anomaly recognition approach based on autoencoder (AE) heavily relies on the assumption that the reconstruction error of normal signals is generally lower than that of abnormal signals.
Tingyan Kuang +5 more
wiley +1 more source
Discrete Dynamics in Nature and Society, Volume 2021, Issue 1, 2021., 2021 Based on the active interference suppression algorithm, this study combines the radar working mode and the interference type and realizes the effective detection of the flaw detection signal by successively processing the radar receiving signal and the filtering processing.
Wenping Wu, Gengxin Sun
wiley +1 more source