Results 221 to 230 of about 1,934,556 (268)

Broadcast anti-jamming systems

IEEE International Conference on Networks. ICON '99 Proceedings (Cat. No.PR00243), 2005
In a traditional anti-jamming system a transmitter who wants to send a signal to a single sender spreads the signal power over a wide frequency spectrum with the aim of stopping a jammer from blocking the transmission. In this paper we consider the case that there are multiple receivers and the sender wants to broadcast a message to all receivers such ...
Yvo Desmedt, Reihaneh Safavi-Naini, Huaxiong Wang, Chris Charnes, Josef Pieprzyk   +4 more
openaire   +2 more sources

Hybrid Strategy of Anti-Jamming for MANET

International Journal of Organizational and Collective Intelligence, 2022
A mobile ad hoc network (MANET) is an autonomous system of mobile platforms called nodes which are free to move around randomly and without constraint. The Communication in this type of network is subject to many security issues such as jamming attacks, identifying the jamming attacks are challenging, which can increase the security threats, so ...
openaire   +1 more source

Anti-Jamming Filtering in the Autocorrelation Domain

IEEE Signal Processing Letters, 2004
An anti-jamming filtering technique is presented that it fully eliminates the jamming (or noncooperative) signal and its performance is noise-independent. This technique uses multiple receivers; a filtering process explores the nonoverlapping properties of the signals in the autocorrelation domain; and a matching of the input and the output statistics.
Ruey-Wen Liu, Rendong Ying
openaire   +2 more sources

Anti-jamming of chaotic signals

Proceedings of Third International Conference on Signal Processing (ICSP'96), 2002
It is found that the amplitude-modulation disturbance can make the chaotic output signals of Chua's (1986) circuit jump into a limit cycle. This is because the limit cycles usually encircle the chaotic orbits in the phase portraits of the Chua's circuits. The four jamproof methods adopted in our physical experiments are the limiter for clipping the sum
null Daqin Zhau, null Zhong Ren, null Shi Lin, null Shenchu Xu   +3 more
openaire   +1 more source

Anti-jamming techniques for synthetic aperture radar

2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
Excellent performance of SAR has aroused deep study of jamming techniques. This paper first discusses present jamming techniques and their shortcomings, then gives methodology of classifying ECCM of SAR, and at the same time, gives principle and results of signal design method, which combines orthogonal codes and random initial phase at each pulse, the
Wei Li, Xing-liang Wang, Xian-ming Wang
openaire   +1 more source

Anti-jamming on the OR-channel

Proceedings of 1994 IEEE International Symposium on Information Theory, 2002
We propose a frequency hopping scheme with M-ary frequency shift keying applied to the OR-channel and give its error and erasure probabilities. Asymptotically, the bit error probability is bounded away from zero whereas it polynomially tends to zero for our previously proposed generalized scheme. >
openaire   +1 more source

Polarization Anti-Jamming Interference Analysis With Pulse Accumulation

IEEE Transactions on Signal Processing, 2022
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Yaomin He, Tao Zhang 0027, Huafeng He, Purui Zhang 0002, Jian Yang 0011   +4 more
openaire   +3 more sources

Deep Learning for an Anti-Jamming CPM Receiver

MILCOM 2019 - 2019 IEEE Military Communications Conference (MILCOM), 2019
A novel continuous phase modulation (CPM) receiver model is proposed in this paper that employs deep learning (DL) techniques to improve the signal recovery and synchronization performance under heavy jamming conditions for frequency hopping (FH) based waveforms. A hybrid deep neural network is used to implement the DL in the receiver model.
Y. Qiu, C. Brown, Li Li 0009
openaire   +1 more source

Efficient uncoordinated FHSS anti-jamming communication

Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing, 2009
We address the problem of jamming-resistant communication in scenarios in which the communicating parties do not share secret keys. This includes scenarios where the communicating parties are not known in advance or where not all parties can be trusted (e.g., jamming-resistant key establishment or anti-jamming broadcast to a large set of unknown ...
Mario Strasser, Christina Pöpper, Srdjan Capkun   +2 more
openaire   +2 more sources

A self-recovery scheme in anti-jamming communications

1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings, 2002
By exploiting the spatial diversity among different signals, anti-jamming communications can be accomplishing using antenna arrays. In this paper, we discuss the self-recovery problem for antenna array wireless systems after the communication link is broken due to abrupt environmental changes.
Murat Torlak, Guanghan Xu, Hui Liu 0011
openaire   +2 more sources