Results 1 to 10 of about 22,220 (107)
FH/MFSK Performance in Multitone Jamming [PDF]
IEEE Journal on Selected Areas in Communications, 1985 The performance of frequency-hopped (FH) M -ary frequency-shift keyed (MFSK) signals in partial-band noise has been extensively analyzed in the open literature. This paper extends the previous research to the usually more effective class of multitone jamming. Specifically, this paper will 1) categorize several different multitone jamming strategies; 2)
Yu, Z., Tjhung, T.T., Chai, C.C.
exaly +9 more sources
Performance analysis of FFH/MFSK receivers with self-normalization combining in the presence of multitone jamming [PDF]
IEEE Transactions on Vehicular Technology, 2002 An analytical study is presented for the performance of fast frequency-hopping (FFH) self-normalized orthogonal M-ary frequency-shift-keyed (MFSK) noncoherent receivers in the presence of multitone jamming. The multiple equal-power jamming tones are assumed to correspond to some of the possible FFH/M-ary orthogonal signaling tones.
Chen Jiang, Jiangzhou Wang
exaly +7 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
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
Development of Multitone Jamming Technique Using DDS Core in FPGA [PDF]
The Journal of Korean Institute of Electromagnetic Engineering and Science, 2011 Communication is very important in warfare. Dispatch riders were used in ancient warfare, but communication system is used in modern warfare, as the advancement of communication equipments. In order to weaken enemy military strength, communication jamming signal disrupts enemy communication systems.
Sang-Geun Hong +2 more
exaly +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
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