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Cooperative Diversity in Wireless Networks: Principles and Applications

Transmission over wireless channels suffers from multi-path fading, which is the biggest problem that affects the data rate and quality of service. Diversity is a powerful technique to mitigate fading, such as time diversity, frequency dive....
Study on Polarization Mode Dispersion and PMD Compensation in Optical Fiber Communication

With the development of information infrastructure, the bit rate and the transmission distance of optical fiber communication are continually increasing. In high speed optic communication systems of 40Gbit/s and above, the effect of PMD to....
Cluster Routing Algorithm and Topology Control in WSNs (Wirekess Sensor Networks)

Wireless sensor networks integrated sensor technology, embedded computing technology, modern networking and wireless communication technologies, distributed information processing technology, and so on. Through integration of the various ty....
On Topology Control Algorithms for Wireless Sensor Networks

In the wireless sensor networks, sensor node is the size of small embedded device, using the limited battery-powered energy, and its computing power and communications capability is very limited. Therefore, apart from designing the energy-e....
The Advanced Receiver of WCDMA Uplink Research and Simulation of Equalizer Algorithm

This thesis mainly focuses on using the advanced receiver instead of RAKE receiver in WCDMA uplink in the radio access.RAKE receiver makes itself a good receiver of WCDMA system because of its simple structure and easy realization. HSPA+ wi....
Research on Carrier Recovery and System Implementation in FY-1 Receiving System

This paper mainly studies carrier recovery and system implementation in FY-1 receiving system. Presently, most of FY-1 receiving systems use analog or half-digital demodulations, which have some disadvantages, such as poor anti-noise perfor....
Research on DSR Protocol in Large-Scale Mobile Ad Hoc Network

Alongwiththe developmentofmobilecommunicationtechnology,MobileAdHocNetworks have received more and more attention because of its fast and agility set-up,and strong survivability. It....
The Influence of the Soft Handover Parameter on the Quality of WCDMA Network

The capacity , coverage and quality of the WCDMA system are restricted by various factors , and vary continuously . The network planning and network optimization of WCDMA system aim to make the three factors to be a best match as far as pos....
Research and Application on Wideband Wireless Mesh Network

In recent years, along with more and more the deployment of the large-scale wireless network, Wireless Mesh Network(, WMN) is more and more valued by people, especially the emergence of Wireless Mesh Network satisfied a social demand more,....
Design and Engineering Application of CDMA Wireless Wideband Repeater

Since mobile communication has been well developed, the high quantity services is also expected by mobile users, the repeater which is a kind of useful radio signal transmission and enlarging facility is widely used to extend and cover the....
Research on Timing Synchronization and PCI Interface of FY-1 Receiving System

At present, FY-1 receiving systems used by China....
Research on the Improvement of IP Header Compression

Due to bandwidth constraints on the wireless link in an IP network, it is useful to compress the headers so as to maximize the utilization of the link. There exist header compression algorithms that make use of the similarity in consecutive....
Take Advantage of LabWindows/CVI to Realize Handset Software Rapidly and Safely Downloading

As more and more mature in today....
Research on Indoor Visible Light Communication System Based on White LED

Visible light communication is a novel wireless optical communication technology and rose with development of white LED fabrication techniques.White LED devices are used not only for illuminating rooms but also for an optical wireless commu....
Research and Development of CDMA-based Digital Trunking System

With 3G is approaching and mobile communications service is developing rapidly, the demand to the digital trunking service becomes more and more urgent. How to provide CDMA based digital trunking service to customs, meet the requirements of....
Research on the Resisting Rain Loss Methods of LMDS Systems

As a new fixed broadband wireless access technology, Local Multipoint Distribution System (LMDS) not only provides economical, fast and high-capcity two-way data transmission for network service providers, but also provides simple and conve....
TD-SCDMA RF Repeater Design

This paper introduce the base knowledge of wireless communication repeater and the characters of TD-SCDMA mobile communication system. Discussed the effecters of repeater for TD-SCDMA network .Got the td repeater\....
A Study of PHS Network Optimization Technology Based on Users' Sensibility

The research topic stems from the author\....
Study on the Characteristics of Atmospheric Channel in Wireless Optical Communication Systems

The study of the characteristics of Atmospheric channel in Wireless Optical Communication Systems is currently the key problems for the exploiture of the laser communication system in civil and military application.Firstly, the history and....
Research of Spectrum Sensing Technique for Cognitive Radio

With the increasing of radio systems, the spectrum resources are becoming more and more stringent. Cognitive Radio is one kind of methods to solve this problem and to utilize the spectrum resources not occupied by users adequately. The key....
Experimental Measure and Analysis of the Error Code Characteristic in the ALC System

ALC (Atmosphere Laser Communication) refers to the two-way transmission technology of voice, data and image through laser beam in atmosphere. It has good application foreground in solve of....
The Ultra-Wideband Mixed Modulation System Design and Performance Analysis

Ultra-Wideband technology is a new type of wireless communication technologies. It uses relative bandwidth larger than 0.25 or absolute bandwidth larger than 500MHz pulse to transport signals. It can be at low power cost and small range tra....
The Search and Implement of Reducing Peak-Average-Power in Free Space Optical Communication Multicarr

Transmission scheme of MCM(Multi-Carriers Modulation) is becoming more popular gradually,which apply parallel transmission mode. MCM can strongly combat multi-path fading and dispersive channel interference, increase frequency efficiency, a....
Research on Multicast Routing Protocols with QoS Supporting for Mobile Ad Hoc Networks

An Mobile Ad hoc network (MANET), a temporally formed network, consists of a collection of mobile nodes with wireless interfaces. The communications among nodes within an MANET are performed through wireless interfaces and usually are multi....
Applied Research in Experimental System for the Software Radio Adapt to Teaching and Studing

The main task of this project is to research partial key technique of the software radio,and to complete a experimental system adapt to teaching and studying based upon the DSP chips.The software radio is based on an open ,standardized, mod....
The Research on Fashion Design in User Interface of Cellphone Based User-Target Experience

The change from the industrial society of material to post-industrial society of non-material, which is the mainly trend of design, is promoted by information technology. Non-material design is a relative concept about material design.The s....
Anycast Algorithm Based on Energy Aware in Wireless Sensor Networks

Wireless sensor networks, one of the modern researching issues of computer network domain, can be used widely in many applications. Wireless sensor network is usually made up with lots of nodes which can be communicated with each other by r....
Research of Mobile Ad Hoc Networks Routing Algorithm Based on Ant Colony Algorithm

The mobile Ad Hoc networks composed of mobile terminal nodes with wireless communication device are typically characterized by their multi-hop,temporary and un-center.It can be quickly built up in anywhere and at anytime and every terminal....
Application of Wireless Ad Hoc in Power System Communication

Power system communication is an important and indispensable component, it directly relates to the security, economic, and reliable operation of power system. Recently, with the rapid development of cities and the increase in power users, t....
Numeric Family Application Research Based on IEEE802.15.4

With the rapid development and interaction of computer technology, electron technology, network technology and communication technology, the wireless network technology is emerged as the times require. The wireless network technology has be....

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