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The package cache IPQAM Design and Implementation

Author: ChenShaoMing
Tutor: WangHongYuan
School: Huazhong University of Science and Technology
Course: Signal and Information Processing
Keywords: IPTV IPQAM Package cache
CLC: TP333
Type: Master's thesis
Year: 2011
Downloads: 24
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Abstract


With today's Internet technology advances, traditional broadcast TV services received great impact. Internet interactivity and rich features make the traditional television services are gradually being marginalized out of people's lives. Integration of traditional TV services and Internet broadcasting has become the whole direction of future development. IPTV technology is a mature solution by scholars of great concern. In IPTV technology, IPQAM as the Internet and traditional broadcast television network bridges, play a very crucial role. In IPQAM due to input and output data rate mismatch and broadcast equipment, the characteristics of packet loss can not occur, and as such, the package cache, decided to become a IPQAM speed and performance is one of the important modules. This paper designs and implements a IPQAM in the package cache. Packet buffer solution of the modulator and the network interface does not match the speed of the problem, so that the video data stream can be smoothly output. This paper describes the first and second chapters of the actual value and the design IPQAM significance. This paper analyzes the IPQAM then the input and output interface and gives them each module functions and design requirements. Finally, by analyzing the input and output data rates, IPQAM the package cache design requirements are given in this chapter. In the third chapter of this paper discusses several general packet buffer design methods and design difficulties therein. Then focused on the DRAM and SRAM architecture for packet buffer and analyzed in this framework, two common scheduling algorithms MDQF (Most Deficit Queue First) Maximum lack queue algorithm and ECQF (The Earliest Critical Queue First) lack the earliest first algorithm. The use of these two algorithms also article gave SRAM boundary discussions and paper in accordance with the actual needs of IPQAM greatest lack queue for which the boundary values ​​given correction algorithm. Finally, according to the project's design needs, this paper analyzes the advantages and disadvantages of the two algorithms. In the fourth chapter of this paper, according to the actual needs, analyze a cache structure and two cache structure. By analyzing both the use and comprehensive consideration of SRAM design needs, this paper presents how to design IPQAM package cache. Then, IPQAM packet buffer specific design methods and design of each module which is also referred to herein, as well as SDRAM logical interfaces are described in detail. Finally, this paper presents a logical package cache usage to the reader as a reference for the actual project.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory
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