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Your search keyword '"Yin, Caihua"' showing total 17 results
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17 results on '"Yin, Caihua"'

6. Investigation of generating random phase in transform domain communication system

Author

Yin Caihua, Liang Jishen, Jin Chengjiang, Ma Dawei, and Zheng Yu

Subjects
Pseudorandom number generator, Cognitive radio, Computer science, Autocorrelation, Electronic engineering, Phase (waves), Phasor, Basis function, Communications system, Algorithm, Least common multiple, Low probability of intercept radar
Abstract

Known as one of the Cognitive Radio (CR) transceiver technologies, the transform domain communication system (TDCS) has the characteristic of low probability of intercept (LPI) and the capability of multiple access (MA). In this paper, basing on the random phase mapping, the characteristics of the pseudorandom (PR) phase vector and the Basis Function (BF) are investigated. After that, two methods of generating random phase, the least common multiple method and the equal interval method are proposed, which both can generate the PR phase vector and the BF of TDCS. In matlab, simulation results indicate that the two methods both can generate the BFs, which have the characteristic of strong autocorrelation and weak crosscorrelation in TDCS.

Published
2012

7. Investigation of the transform domain code division multiple access

Author

Zheng Yu, Ma Dawei, Yin Caihua, Wang Jian, and Jin Chengjiang

Subjects
Computer science, Code division multiple access, Radio receiver, Communications system, Chip, law.invention, symbols.namesake, Cognitive radio, Additive white Gaussian noise, law, Bit error rate, symbols, Electronic engineering, Rake receiver, Fading, Low probability of intercept radar, Communication channel
Abstract

In this paper, the transform domain code division multiple access (TDCDMA) is proposed, which synthesizes the excellence of the transform domain communication system (TDCS) and the code division multiple access (CDMA) technology. The TDCDMA has the characteristic of low probability of intercept (LPI) and the capability of multiple access (MA), and it's great potential to be applied in the cognitive radio (CR) contexts. Compared with the traditional TDCS and CDMA, the complex RAKE receiver is avoided in TDCDMA. The transceiver block diagram and the signal model of TDCDMA are given, and it's performance is investigated, discussed and simulated in Additive White Gaussian Noise (AWGN) and multi-path fading channels. Computer simulation results show that the TDCDMA is much more superior than the traditional TDCS and can be a promising transmission scheme in CR contexts.

Published
2011

8. FFT-Based channel estimation and application of the transform domain communication system

Author

Ma Dawei, Jin Chengjiang, Zheng Yu, Yin Caihua, and Wang Jian

Subjects
Computer science, Rake, Fast Fourier transform, Radio receiver, law.invention, symbols.namesake, Cognitive radio, Additive white Gaussian noise, law, Bit error rate, Electronic engineering, symbols, Demodulation, Rake receiver, Fading, Communication channel
Abstract

Known as one spectrum agile transceiver technology in the cognitive radio (CR) contexts, the transform domain communication system (TDCS) has the characteristic of low probability of intercept (LPI) and the capability of multiple access (MA). In this paper, The primary work is to give a detailed description of the FFT-Based channel estimation (CE) in TDCS receiver, which is applied in receiving symbol demodulation, where the CE-based demodulation algorithm is given. In matlab, simulation results indicate that the FFT-Based CE of TDCS is realizable and available, and the performance of CE-based demodulation algorithm is better than the one of RAKE receiver algorithm in both the Additive White Gaussian Noise (AWGN) and the multi-path fading channels.

Published
2011

17. CMTM8 induces caspase-dependent and -independent apoptosis through a mitochondria-mediated pathway.

Author

Jin C, Wang Y, Han W, Zhang Y, He Q, Li D, Yin C, Tian L, Liu D, Song Q, and Ma D

Subjects
Apoptosis Inducing Factor metabolism, Chemokines genetics, Cytochromes c metabolism, Enzyme Activation, Gene Expression, HeLa Cells, Humans, MARVEL Domain-Containing Proteins, Phosphorylation, Phosphoserine metabolism, Plasmids, Transfection, bcl-Associated Death Protein metabolism, bcl-X Protein metabolism, Apoptosis, Caspases metabolism, Chemokines metabolism, Mitochondria metabolism
Abstract

The mitochondria-mediated apoptotic pathway is regulated by members of the Bcl-2 family. Epidermal growth factor (EGF) induces Bad phosphorylation at Ser112 via mitogen-activated protein kinase (MAPK), impairing its binding to Bcl-2 and Bcl-xL and interfering with their anti-apoptotic functions. In the current study, we utilized Western blot, immunofluorescence, flow cytometry, and confocal microscopy to examine the effects of CMTM8 overexpression on apoptosis. Our data indicated levels of Bad-S112 phosphorylation were lower in CMTM8-transfected cells compared to pCDB-transfected cells. Caspase-dependent and independent mediated apoptosis, induced by CMTM8 overexpression, was facilitated by the mitochondria and inhibited by knockdown of Bad or overexpression of Bcl-xL. Previous research in our laboratory also demonstrated CMTM8 attenuated EGFR-mediated signaling pathways by decreasing ERK1/2 phosphorylation levels. These data implicate CMTM8 as a negative regulator of EGF-induced signaling, with potential use as a novel therapeutic gene for EGFR-targeted anticancer gene therapy., ((c) 2006 Wiley-Liss, Inc.)

Published
2007
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