WCDMA标准化进展

依据演进次序,从3GPP R99、3GPP R4、3GPP R5、3GPP R6和3GPP R7五个方面对WCDMA系列标准进行了概括的介绍,并对各标准的主要特点和新增功能进行了概述.     

WCDMA标准化进展

WCDMA作为未来3G的三大主流技术标准之一,已经得到业界的广泛认可.在技术创新和市场驱动的双重作用下,WCDMA从概念向产业化的进程正在加快,全球主要设备制造商都在积极跟踪和研发基于WCDMA技术的3G网络产品.本文依据演进次序,从3GPP R99、3GPP R4、3GPP R5、3GPP R6和3GPP R7五个方面对WCDMA系列标准进行了概括的介绍,并对各标准的主要特点和新增功能进行了概述.     

He-Ne激光照射对口腔颌面部肿瘤患者IL2、IL2R的作用研究

采用^3H—TdR掺入法、酶标及间接免疫荧光技术检测50例恶性肿瘤患者He—Ne激光治疗前后IL-2活性、IL-2R、sIL-2R的变化。结果表明,肿瘤患者IL-2活性,淋巴细胞膜IL-2R均明显降低,而血清sIL-2R明显增多,与激光治疗后相比P〈0．01,由此表明He—Ne激光照射对IL-2系统有调节作用。     

WCDMA各版本的演进分析

随着3G即将在国内投入商用,WCDMA作为3G标准之一而备受关注.WCDMA方案自提出以来先后有R99、R4、R5三个版本,选择那个版本来建设网络对于移动运营商来说至关重要.本文首先叙述了WCDMA各个版本的由来,随后重点对各个版本的优缺点进行了全方面比较分析,并在此基础之上对WCDMA网络未来的发展建设予以展望.     

HSDPA／HSUPA的引入对R99／R4网络的影响分析

文章首先分别介绍了HSDPA和HSUPA的关键技术,然后分别就HSDPA和HSUPA的引入对WCDMA R99/R4网络带来的影响进行了详细探讨,并给出了结论。     

WCDMA标准化进展

依据演进次序．从3GPP R99．3GPP R4．3GPP R5、3GPP R6和3GPP R7五个方面对WCDMA系列标准进行了概括的介绍，并对各标准的主要特点和新增功能进行了概述。     

Quantum theory analysis on microscopic mechanism of the interaction of laser with cell membrane

On the basis of liquid crystal model with the electric dipole moment of cell membrane,the microscopic mechanism of the electricity and thermology effects of interaction of laser with cell membrane is researched by electromagnetic, quantum mechanics and quantum statistics. We derive the formulas on the polarization effects and ＂temperature-rising effect＂ of laser-cell membrane interaction. The results of the theoretical research can explain some experiments.     

Chahine algorithm to invert light scattering spectroscopy of epithelial dysplasia

To perceive the epithelial dysplasia from the light scattering spectroscopy (LSS) is an inverse problem, which can be transformed into the inversion of the size distribution of epithelial-cell nuclei. Based on the simulation of single polarized LSS for epithelial-cell nuclei, Chahine algorithm is adopted to retrieve the size distribution. Numerical results show that Chahine algorithm has high inversion precision for both single-peaked and bimodal models, which implies the potential to increase diagnostic resolution of LSS.     

Time-resolved two-photon excitation fluorescence spectroscopy and microscopy using a high repetition rate streak camera

We present a time-resolved two-photon excitation fluorescence spectroscopy and a simultaneous time- and spectrum- resolved multifocal multiphoton microscopy system that is based on a high repetition rate picosecond streak camera for providing time- and spectrum- resolved measurement and imaging in biomedicine. The performance of the system is tested and characterized by the fluorescence spectrum and lifetime analysis of several standard fluorescent dyes and their mixtures. Spectrum-resolved fluorescence lifetime images of fluorescence beads are obtained. Potential applications of the system include clinical diagnostics and cell biology etc.