Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Xue-jun Sha"'
Publikováno v:
Tongxin xuebao, Vol 33, Pp 74-86 (2012)
An opportunistic spectrum sharing protocol based on OFDM cooperation relaying was proposed.When the primary user experiences weak channel conditions,it could not achieve its target rate.If the cognitive user could help the primary user achieve its ta
Externí odkaz:
https://doaj.org/article/0f98716b17da44cea8f0f6076a4fb4a5
Publikováno v:
Tongxin xuebao, Vol 33, Pp 36-44 (2012)
A wireless communication technology based on signal waveform collaboration was proposed for resolving the conflict between limited spectrum resources and the rapidly growing service needs.The proposed technology employs linear frequency modulation (L
Externí odkaz:
https://doaj.org/article/ceb74b2383d44605beaf425dc9cc9301
Publikováno v:
Tongxin xuebao, Vol 32, Pp 21-26 (2011)
In response to the shortcoming of conventional algorithms,modified SSCA was exploited to calculate the cyclic spectral correlation of received signal for decreasing the computational complexity.Symmetry of cyclic spectral correlation (CSC) was used t
Externí odkaz:
https://doaj.org/article/5c1da716dd9e4e49805a0605c3f6f05c
Publikováno v:
2018 14th IEEE International Conference on Signal Processing (ICSP).
A weighted-type fractional Fourier transform (WFRFT) based multi-antenna transmission scheme with preequalization is proposed. The original signal is split into two composite signals which are both WFRFT component signals. After pre-equalization an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fff4335b1dc002efe5bfc1d0fe6939de
https://doi.org/10.1109/icsp.2018.8652424
https://doi.org/10.1109/icsp.2018.8652424
Publikováno v:
Advanced Materials Research. :500-503
This paper proposed a 4-weighted fractional Fourier transform (4-WFRFT) based carrier modulation technique. The system performance applying such modulation is analyzed under burst interference, and then compared with single carrier (SC) modulation an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a97c98658c94fd54aa7b27830fb23e6
https://doi.org/10.4028/www.scientific.net/amr.171-172.500
https://doi.org/10.4028/www.scientific.net/amr.171-172.500
Publikováno v:
2012 IEEE 11th International Conference on Signal Processing.
UTRAN Long Term Evolution (LTE), marked as 4G LTE, is a standard for wireless communication developed by 3GPP, which is aiming to provide a spectral efficiency 2 to 4 times higher than its predecessor HSUPA/HSDPA Release 6. As an uplink access scheme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78a119ac9229f7ec52956d4d624d5697
https://doi.org/10.1109/icosp.2012.6491853
https://doi.org/10.1109/icosp.2012.6491853
Publikováno v:
ICMLC
Semi-supervised learning is necessary for the extensive application of machine learning in practice. It can use unlabeled data to improve the performance of existing supervised machine learning method. In this work, we addressed the biomedical relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c53ed73c352eaf1e5f2cb5fc8bae4752
https://doi.org/10.1109/icmlc.2011.6016953
https://doi.org/10.1109/icmlc.2011.6016953
Publikováno v:
IEEE 10th INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS.
In this paper, a multi-level orthogonal sequences design method is proposed based on the solution of optimization problem using genetic algorithm. The orthogonality performance of the orthogonal sequences designed here is good, which can effectively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cb56c923947d74e922df4919d1bd491
https://doi.org/10.1109/icosp.2010.5656691
https://doi.org/10.1109/icosp.2010.5656691
Publikováno v:
2010 International Conference on Computational Intelligence and Software Engineering.
In this paper, a secure communication system based on fractional Fourier transform (FrFT) is proposed. Information data is encrypted by a certain order FrFT at transmitter, and then divided into two parts and sent out. The receiver decodes the signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9cf9c25a5426c00918bd9b6cb8edf3c
https://doi.org/10.1109/wicom.2010.5600116
https://doi.org/10.1109/wicom.2010.5600116
Publikováno v:
2009 5th International Conference on Wireless Communications, Networking and Mobile Computing.
Cooperative diversity has been proposed to form virtual antenna arrays in order to obtain spatial diversity gains. Various relay selection strategies in cooperative diversity systems were proposed but they are efficient for static or low speed users.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33fc8b2c7abc8ef1f4deecea0a7b0a22
https://doi.org/10.1109/wicom.2009.5303814
https://doi.org/10.1109/wicom.2009.5303814