Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Mankun Xu"'
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2019, Iss 1, Pp 1-13 (2019)
Abstract In massive MIMO-OFDM systems, channel estimation is a significant module which can be utilized to eliminate multipath interference. However, in realistic communication systems, carrier frequency offset (CFO), which often exists in receive en
Externí odkaz:
https://doaj.org/article/cdffdc85f37e49398df8525179459584
Publikováno v:
ICCT
In this paper, for the long-code direct sequence spread spectrum (DSSS) signal in multipath channels at the low signal-to-noise ratio (SNR), we propose a joint blind estimation method for pseudorandom (PN) codes and channels without any given code se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1033d97f2f1f1f8ea5821033ff5e4cd9
https://doi.org/10.1109/icct50939.2020.9295739
https://doi.org/10.1109/icct50939.2020.9295739
Publikováno v:
Multimedia Tools and Applications. 74:5725-5746
The current JPEG steganalysis systems have attained outstanding achievements. A considerable variety of strategies for feature extraction are developed. However, a common shortcoming in the traditional image steganalysis techniques is that they are c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e16827e4d91e75c4d51e0752376d896
https://doi.org/10.1007/s11042-014-1880-y
https://doi.org/10.1007/s11042-014-1880-y
Publikováno v:
Science China Information Sciences. 57:1-7
Subtractive pixel adjacency matrix (SPAM) features, introduced by Pevn’y et al. as a type of Markov chain features, are widely used for blind steganalysis in the spatial domain. In this paper, we present three improvements to SPAM as follows: 1) ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33c5ba2f3e6cc08255d104841ba7f96c
https://doi.org/10.1007/s11432-013-4793-x
https://doi.org/10.1007/s11432-013-4793-x
Publikováno v:
Science in China Series F: Information Sciences. 51:1466-1474
According to the distribution characteristics of short and repeated sequence (SRS), a steganalytic method based on the correlation of image bit planes is proposed. Firstly, we provide the conception of SRS distance statistics and deduce its statistic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdacf5664fc9886cf25beffa69c9722a
https://doi.org/10.1007/s11432-008-0110-5
https://doi.org/10.1007/s11432-008-0110-5
Publikováno v:
ICASSP
In the available Jpeg steganography methods, Model-based (MB) steganography technique is more secure than Jsteg, F5 and OutGuess. In this paper, we consider the problem of estimating the embedded length of secret messages of MB steganography. We prov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3021e2a71e2a62c967520ce5e1e2ba5a
https://doi.org/10.1109/icassp.2009.4959882
https://doi.org/10.1109/icassp.2009.4959882
Autor:
Xijian Ping, Mankun Xu
Publikováno v:
Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems.
The problem of calculating the discrete Fourier transform (DFT) acquired in polar coordinate system has been given considerable attention in many fields during the last 40 years such as antenna, image registration, tomography. etc. Unlike DFT, the di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25ee8ef34ed327a886a087ac613043c8
https://doi.org/10.1109/itsc.2003.1252780
https://doi.org/10.1109/itsc.2003.1252780
Autor:
Mankun Xu, Xijian Ping
Publikováno v:
Third International Symposium on Multispectral Image Processing and Pattern Recognition.
The problem of calculating the discrete Fourier tranform (DFT) acquired in polar coordinate system has been given considerably attention in many fields such as antenna, image registration and tomography. This paper proposes an improved fast DPFT algo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a297417807283b24175fe375b0bb463
https://doi.org/10.1117/12.538986
https://doi.org/10.1117/12.538986
Publikováno v:
Journal of Electronic Imaging. 22:043033
The current JPEG steganalysis systems, which include various strategies for feature extraction, have attained outstanding achievements. However, a common shortcoming is that they are always conducted on the entire image and do not take advantage of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9f319dc124219bea9fc3f624a23428f
https://doi.org/10.1117/1.jei.22.4.043033
https://doi.org/10.1117/1.jei.22.4.043033
Publikováno v:
Journal of Electronic Imaging; Oct-Dec2013, Vol. 22 Issue 4, p1-11, 11p