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Design and Implementation of Subnet Accessing Mechanism in Universal Network
With the explosive growth of Internet technology and application services, many disadvantages of traditional Internet network architecture come out gradually, such as the separation of identifier and locator of IP address which has already....
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Markov Model of DES to Admission Control of Communication System
Discrete event system(DES) is an important applied classification of computer control.The typical example is admission control of communication system which is a relatively commonly see problem of queuing network.In this paper,we apply the....
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Research on LDPC Codes Technology Applied to Broadband Power Line Communication
Based on the investigation into the principle of channel coding technology and the characteristics of power line communication, we apply LDPC (Low Density Parity Check) codes to AWAN (Additive White Class A Noise) channels which is usually....
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Research of Small Vocabulary, Speaker-independent Chinese Keyword Spotting Algorithm
Keyword spotting is an important area in speech recognition. Its objective is to identify and verify a few specified key-words in continuous speech. Comparing with keyword spotting, continuous speech recognition needs more resources and its....
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FPGA Prototype Design of MPEG-4 AAC Audio Decoder
Compared with other music formats for commercial use in the digital audio compression field,MPEG-4 AAC is outstanding with better audio quality,higher compression rates,more channels and variety of sampling rates,and it\....
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The Application and Research of AMR2 Voice Codec Technology in the Media Server
Digital Voice without any treatment account for a large amount of data,Direct transmission and storage will take up a large number of channel resources and storage space.That how to efficiently compress encoding In ensuring a certain qualit....
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A Research on Wireless Sensor Network Routing Protocols
This paper was supported by the subject《A research on plant automated irrigation with water need》which sponsored by the Technology Department of the Station Forestry Administration of China.By comparison with the main routing protocols o....
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The Design and Implementation of Network Management System for Shuohuang Railway Access Network
With the rapid development of communications technology, telecommunication services have been developing with the characteristics as integration,digitalization,intellectualization,broadband-oriented and personalization. The demand of divers....
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Design and Implementation of Geographic Location Based Inter-Domain Routing in Universal Network
The Universal Network separates the identifier and locator,which can resolve the lack of scalability and security.In this thesis,the design of the inter-domain routing protocol for the Universal Network projects is studied.This design adopt....
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The Research and Implement of PRBT Call Processing System in IP-Based Network
At present, with the development of IP technology, an increasing number of telecommunication services are running in the IP Network. In the future, next generation network (NGN) will be based on IP. Now, PRBT Business System based on IP in....
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The Research and Design of 10 Gigabit Uplink Extended Card in Ethernet Switch
10 Gigabit Ethernet Technology(10 GbE technology for short) is one of the latest network technologys.Not only it makes bits rate is 10 times than Gigabit Ethernet Technology,but also can make network system more compatible,its upgrade easie....
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The Research of Noise Offset in Medium Voltage Power Line Communication
This thesis introduced a general model of the power line channel noise, and made an analysis of the frequency and time domain of the noise data gathered from the medium-and-low-voltage power line. The correlation calculation of the medium v....
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Security Analysis of Electric Power Communication Networks and Electric Power Information Based on Ro
In this paper, Rough Set theory is introduced into the security risk evaluation of the electric power communication networks. One hand, because there is no decision attributes in the evaluation information table, a security risk evaluation....
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Research on the Emergency Communication Network to Respond Disaster in Power System
An emergency communication network framework composed of two data sharing centers and three-layer network is proposed, according to the thorough investigation of the emergency communication network and actual demand in power system. The eme....
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Analysis and Research for Communication Network Management System's Real-time Faults
Current situations, characteristics and requirements of electric power communication network are introduced in this thesis, and communication network management system....
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Research and Realization of Data Transmission Device Based on Low-voltage Lines
In this paper characteristics of carrier wave communication and automatic meter reading technology are deeply studied in China.Then a proper project is proposed,which is data transmission device based on low-voltage power line and 485-bus i....
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Research on Access Networks Multiplexing in Triple Play
With the digital communication technology developed and appeal of network service diversification increased, Triple Play is gradually become the technic renovation hotspot that people pay attention to in the field of networks. In this paper....
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The Medium Voltage Distribution Network Carrier Communication Technology Based on Narrow-band OFDM
The Power Line Communication (PLC) is a data/voice transmission method by making use of the power line as communication media. Compared with the other wired communications, it has huge potential applications. First of all, the thesis analyz....
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Design and Implementation of FPGA Prototype for MP3 Audio Decoder
Nowadays MPEG Audio Layer3 (MP3) has become one of the most popular music for its high music quality, low data complexity and high compression rate, and it is widely used in Internet and portable devices. So we focused on the MPEG-1 MP3 aud....
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Research and Implementation of Keyword Spotting System with Large Keyword Table in Spontaneous Speech
As an important way to human-computer interaction,speech recognition has broad application prospects.Compared with the continuous speech recognition, keyword spotting technology has advantages of high correct rate and strong practicality, s....
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Study and Implementation of Policy-based Conflict Detection System for Billing Rules
Telecommunications enterprises are making use of varieties of billing rules to improve enterprise efficiency and service quality. Billing system must be able to support these flexible billing rules. In order to solve the problem of portfoli....
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Studying for Metropolitan Area Networks of Nanning Telecom
Basing on the telecom network of Nanning Telecom Company, in this article, author makes sufficient analysis on its network quality and concerned business, furthermore, hands in the practical network construction scheme. This article include....
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Study of Archetechture and Implementation of Telecom Integrated Business Service Platform
After many years\....
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The Research and Application of Task Scheduler Based and High Flexibility Adapter
In the communication network with multi-manufacture and multi-type equipment, there are large differences among the Network Management Interface. The Adapter Technology is introduced to resolve the consistency of Network Management Interfac....
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The Design and Implementation of Shared Integrated Date Model on the Integrated Service Billing Syste
Facing increasingly furious competition and adapting to the need of service development,China Netcom Communication Group LiaoNing Corporation implement new generation Business and Operation Support System(namely BOSS).That fulfil the multip....
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Design and Implementation of Queue Scheduling and Fast Forwarding Mechanisms in Universal Network
Due to historical reasons,the original design of Internet is basically user-centric and data-oriented,providing the service of....
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Research Based on Time-Frequency Distribution of LFM Signal and Simulink of Fractional Fourier Transf
By analyzing the LFM (linear frequency modulation signals) the time-frequency distribution, Wigner-Ville distribution, Wigner-Hough distribution, combined with FRFT (fractional Fourier Transform) and time-frequency distribution of the above....
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Quasi-cyclic Codes over Finite Chain Rings
Quasi-cyclic codes form a remarkable generalization of cyclic codes. They are asymptotically good as they meet a modified version of Gibert-Varshamov bound . They are closely linked to convolutional codes. Recently there has been a great in....
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Research on Synchronization Algorithm of BOC Modulated Signal and Its FPGA Implementation
Binary offset carrier modulation is a type of new modulation method whose main point is to pre-modulate non-modulated spread spectrum base-band signal with square wave to incur energy spectrum splitting so that the new signal\....
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Implementation of GPS L1 Signal Processing Technology
With widely used GPS for the area of navigation, aviation, aerospace, transport surveying, resources exploration, communication and meteorology, the research of satellite navigation receiver is becoming a hot scheme in the modern world. The....