http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
QPSK differential space time coding on different unitary matrices sets and initializations
Hou, Jia,Ho Lee, Moon John Wiley Sons, Ltd. 2006 International journal of communication systems Vol.19 No.9
<P>This paper investigates a distinct set of complex unitary matrices for differential space time coding by using QPSK modulation. The numerical results show that the proper selection of the initial transmission matrix and the set of unitary matrices can efficiently improve the bit error rate performance, especially for the antennas correlated fading channel. The computer simulations are evaluated over slow and fast Rayleigh fading channels. Copyright © 2005 John Wiley & Sons, Ltd.</P>
Extended Welch Inner Product Theorem for Systematic Binary Block Codes
Jia Hou,Moon Ho Lee 보안공학연구지원센터 2008 International Journal of Hybrid Information Techno Vol.1 No.1
A Simple extended Welch inner product theorem is investigated in this paper. Several functions to find the largest possible minimum Hamming distance of the systematic binary block codes are also derived by using the extended Welch inner product theorem. The results will be useful to estimate or design good codes for communications or other information technology.
Jia Hou,Hongru Guo,Tao Du,Shijun Shao,Yanhong Zhang 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.4
Licorice cultivated is one of the most popular herbal medicines, while its quality is unstable. The aim of present study is to investigate the effect of licorice seedling grade standard on improving its quality. One-year-old Glycyrrhiza uralensis seedlings were classified into three grades 1, 2, and 3 by weight per plant. The major root biomass indexes (root fresh weight, root dry weight and taproot diameter) and contents of 7 bioactive components (glycyrrhizin, liquiritin, liquiritin apioside, liquiritigenin, isoliquiritin, isoliquiritin apioside, and isoliquiritigenin) varied in different grades seedlings. Further, the contents of 7 investigated compounds of 3-year-old licorice produced by grade 1 seedlings were 1.5–2 times as much as those produced by grade 2 and 3. Additionally, the contents of liquiritin apioside and isoliquiritin apioside were positively correlated with licorice root biomass. These results indicated that establishing licorice seedling grade standard is an effective way to improve and control its quality.