The different propagation times due to the distinct distance between the BSs and MSs result in intercell asynchronous interference, which severely destroy system performance. How to mitigate intercell asynchronous interference by making use of SLNR（Signal to Leakage Noise Ratio） precoding is the key to this paper. A framework of CoBS(Cooperative Base Station Systems) was developed and the delay between the cells was analyzed. A delaytolerance SLNR precoding was brought forward in LTE（Long Term Evolution） system  to suppress intercell asynchronous interference. And this method can also reduce the complication of terminal. The numerical delaytolerance SLNR precoding simulation results are presented based on cooperative base station LTE systems, the conclusions show that it can mitigate intercell asynchronous interference. And the method can reach a good performance under different antenna configuration compared with receive algorithm.The performance is affected by channel estimation error, but it can still be accepted.

Objective tests for the range of measurement objectives faced by a small distance, target and background contrast and other practical problems,a tracking method is proposed based on DSP (Digital Signal Processing) and FPGA (Field Programmable Gate Array) digital video image information for target motion detection. The method uses image segmentation and target detection tracking algorithm, accurately and quickly locate targets cross the center of the complex environment in order to achieve target motion detection to track the efficiency and accuracy.

To address when multiple users through a common channel to communicate with other users must use multiple access technologies. Slotted ALOHA in the elaboration of the ALOHA system and the continuous-time systems as well as non-persistent CSMA (Carrier Sense Multiple Access) control protocol, while the analysis were obtained three kinds of systems, the average successful captain and system throughput mathematical expression, and through simulation experiments verify the theoretical analysis is correct.

Take object signal phase difference and carrier frequency as observation variables and utilizing phase difference rate of change passive location method goes to object.Because of disturbance, measurement data may be missed and the that passive location precision of phase difference change rate rapidly declines.A least squares curve fitting method is presented to fill up missing data. This method can not only be provided with highly precise filling ability but also be good at stable performance no matter what form of missing data will be. Therefore taking this method we can realize fast and exact passive location of phase difference change rate. Simulation results show that the method can reach corresponding passive location error 2.14％ within 5 s.

In order to address the redundance of fixedline telephone network switching equipment and data extraction, using Huaweis TABLEBROWSE software system, an extenuatory solution of fixedline telephone network is researched and designed based on the backdrop of huawei C&C08 PBX（Private Branch eXchange）. It is based on network data extraction and cutover order script, many problems during the cutover of fixedline telephone network are considered. Compared with the general methods of extracting data from 97s system, this solution has the properties of a strong real-time, high data accuracy rate of 100%, and only half of consuming time. The solution has been proved practicable completely.

Intrusion prevention system are mainly based on the correlation between intrusion detection systems and firewalls, and the data format applied to identification and maintenance for both is usually different. These sensitive data are often transmitted in the open network environment, which faced with various security threats. To solve these problems, the trusted communication is introduced.The design and implementation of trusted communication protocol based on XML(eXtensible Markup Language) is provided. Compared to related works, this protocol achieves the implementation of secure data transmission between intrusion detection systems and firewalls in the heterogeneous environments, and scaled to various network security products and network management devices, which contributes to the data fusion among these devices and the detection of distributed network attacks.

Sequence alignment is the basis of sequence analysis, which describes the similarity of sequences in a set to understand the biological characteristics of a gene family concisely. The dynamic programming algorithm is adopted to analyze the similarity of the sequence of currentnew H1N1 influenza virus gene sequences and their encoded amino acid sequences.Some important genetic information is obtained,such as high homologous between NA and M gene fragments of 2009 new H1N1 influenza virus and corresponding gene fragments of 2008 swine H1N1 influenza, gene mutation in some sites plusdeletion mutation. These results provide the basis for the further study of this new H1N1 influenza virus.

SWS（Semantic Web Service） is an extension of Web service with semantic information. Its purpose is to improve the performance and efficiency of service discovery and composition,to effectively enhance the automatic degree of information integration.We review five description languages of SWS, and introduce two kinds of published schemes, which are fundamental issues of SWS. Several development tools of SWS are given.A discussion on the future research topics is presented, for the purpose of giving some insights to future research on SWS.

To resolve the problem of fixed topology and node scalability in greenhouse monitoring system,the design and implementation methods of greenhouse environmental monitoring system based on ZigBee wireless sensor networks were proposed and constructed based on the ZigBee protocol. Hardware design and software solution are given. The ZigBee coordinator network processing is discussed in detail. PIC18F4620 microcontroller is used to control CC2420 radio transceiver and drives temperature and humidity sensor (SHT11) through the I²C bus. The temperature and humidity are sent to the monitoring platform by the ZigBee network. Test results show that the system has the advantages of fast networking，flexible nodes and low power consamptian. It realizes greenhouse temperature and humidity monitoring effectively in the wireless environment.

 In order to assist sales managers to take full advantage of the existing historical sales data, capture sensitive data rapidly and intuitively, and grasp the market quotation accurately and timely, this paper introduces a visualized analyzing system, which is based on the data warehouse as the analyzing platform, utilizes the geographical feature of sales data, combines the API（Application Program Interface） provided by Google Maps, and maps the analyzing operations of OLAP（Online Analytical Processing） to the interactive operations of the map. According to practical application cases, the system focuses on optimizing the data warehouse architecture, which lays a good foundation for system development. It is proved that the system improves the decision-making ability and efficiency of the sales management effectively, and may create more economic benefits for enterprises.

In practical applications, some structures of an XML（eXtensible Markup Language） document are often changed. In order to mining knowledge hiden in the freduently changing structures in the XML document history changes, a method to found the frequently changing structures is proposed, then uses a document-vector model which composition by a set of frequently changing structures to represent an XML document, to proportion that frequently changing structures appearance in the cluster as weight, and cluster XML documents use weighted cosine similarity. After experimental analysis, according to frequently changing structures which found in the XML document historical change process will be better able to cluster XML documents. Cluster XML document using the weighted cosine similarity, the precision rate, recall rate and cluster internal distance of cluster result are all better than the results obtained by use non-weighted cosine similarity.

To improve the number of TCP(Transfer Control Protocol) flows, the average sending rate, to reduce the volatility of the rate of sending a few to improve network performance, adaptive parameter settings is proposed based on AIMD (Additive Increase Multiplicative Decrease) algorithm (A-AIMD algorithm). Simulation results show that the network is in steady-state operation, the use of A-AIMD algorithm can improve the TCP  stream, the average sending rate, reducing the sending rate volatility.The network has the link available resources the use of A-AIMD algorithm can quickly occupied most of the resources available at the same time with the Reno algorithm to maintain a certain degree of TCP-friendly.

By analying VRML(Virtual Reality Modeling Language) principle and its optimization technology, a realtime downloading and loading method based on net management is presented to solve speed problem facing in real-time generation of a large scale virtual scene in a networked environment. Through selecting and rendering some small parts of scene, the generation speed is improved and it is helpful to explore a large scale virtual scene in real-time, a system for rendering virtual campus scene based on the above method was developed.

New algorithm NSVD_GA(Grid Scan and Vertex Digital_Generation Algorithm of Contour Lines Drawing) is brought forward for drawing X-rays diffraction polar diagram and other contour-lines graph based on data of crystalloid structure and request of contour-lines graph drawing. NSVD_GA draws contour lines using technique of grids scan and numeric contrast after nodes feature instead of contour lines tracing, which selects jumping-off point and grids exit difficultly, and it reduced judge time in comparing values of contour lines and grid vertexes. NSVD_GA is adapted for data expression of scientific research and other contour drawing, and it has clarity of thinking, briefness of realization and highly efficiency.

To deal with the large amount of calculation of image mosaic algorithm, An image mosaic algorithm based on extended phase correlation of edge is presented. The iterative threshold segmentation approach is introduced to detect image edge. Then the image translation, rotation and scale changes are calculated by the extended phase correlation method. These parameters are utilized to stitch images. Image fusion can be achieved by fade-in-fade-out method. It is proved by experiments that this algorithm is simple to calculate, and can effectively achieve the image mosaic.

The charger on the mainstream market can not detect the capacity of the battery，they can not automatically poweroff after fully charged. In order to resolve this problem，we design a charger with the function of overheating protection,using MSP430 single chip as the core controller, DS1302 chip as the external clock.Experiments show that this charger can conduct with Liion battery，Ni-Ge  battery both charge and discharge.It can offer two capacity detecting methods.The testing error is less than 5% when using the traditional way,and the error is bigger when using the fast detecting model due to its time saving.

With the deepening of e-business applications, more and more enterprises need to carry out online customer service and collaboration office, they are forced to deal with management and information exchange issues.By analyzing some technologies related to the instant messaging system based on the XMPP（eXtensible Messaging and Presence Protocol）,we design a building of enterprise instant messaging system, then introduce its application in enterprise online customer service and enterprise collaboration．The system provides services on the unified architecture，uses the hierarchy design thought,it is available with automation,manageability and integration，it has Lean service idea．The system decreased the enterprise service cost, improved enterprise service efficiency, standard service management.