DVB-H規格中鏈結層之演算法與效能分析

A study of the DVB-H recommended Link Layer algorithm

林冠廷(Quen-Ting Lin)

指導教授 ： 劉玉蓀

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00563

摘要

對於傳送數位廣播訊號到手機，手持式數位視訊廣播(Digital Video Broadcasting-Handheld；DVB-H)是數位廣播的新規格[1]，在此規格中，它是運作在地面的數位視訊廣播(Digital Video Broadcasting-Terrestrial；DVB-T)實體層的上一層並相容。在鏈結層接收端可選擇使用多重協定封裝-前向糾錯機制（Multi Portocol Encapsulation - Forward Error Correction；MPE-FEC），它的抗干擾能力較好。DVB-H規格建議使用CRC-32作為檢查碼。本論文依照標準規格去實現DVB-H鏈結層[2]中的演算法，經由上層接收到的section去做讀檔頭、解CRC、組合frame table、RS抹失解碼、最後取出IP datagram的動作，所有步驟都經由演算法一一用軟體實現，並且做IP datagram錯誤與section錯誤率在長度、列數，相互之間的比較圖。

關鍵字

手持式數位視訊廣播 ； 多重協定封裝前向糾錯機制

並列摘要

For the transmission of digital broadcast signals to mobile phones, handheld digital video broadcasting (Digital Video Broadcasting-Handheld; DVB-H) is the new digital broadcasting standard[1]. In this specification, it is the ground operation of the digital video broadcasting (Digital Video Broadcasting-Terrestrial; DVB-T) physical layer and the upper layer of compatibility. In the link layer receiver may choose to use Multi-Protocol Encapsulation - Forward Error Correction Mechanism (Multi Portocol Encapsulation - Forward Error Correction; MPE-FEC), it is better anti-interference ability. DVB-H specification is recommended as a CRC-32 checksum. In this paper, to achieve in accordance with standard DVB-H link layer algorithms[2], the section through the upper receiver to do read header[3], CRC-32, combination table, RS erasures decoding[4][5], and finally remove the IP datagram of the action, all the steps Algorithms are used by the software to achieve, and IP datagram error rate and section error rate in different length, the number of columns in the comparison chart.

並列關鍵字

DVB-H ； MPE-FEC

參考文獻

[8] 梁書潤，RS-CC串接碼應用於無線通訊之效能分析，碩士論文，國立台北科技大學電腦與通訊研究所，台北，2009。

[3] G. Faria, J. A. Henriksson, E, Stare, and P. Talmola, “DVB-H:Digital broadcast services to handheld devices,” Proceeding of the IEEE, vol. 94, no. 1, jan. 2006.

[4] E. D. Balaguer, F. Fitzek, O. Olsen and M. Gade: “Performance Evaluation of Power Saving Strategies for DVB-H Services using adaptive MPE-FEC Decoding”, in IEEE Int. Symp. on Personal Indoor and Mobile Radio Communications(PIMRC), CTIF, Denmark, Aug. 2005.

[6] H. Joki, J. Paavola and V. Ipatov: “Analysis of Reed-solomon Coding Combined with Cyclic Redundancy Check in DVB-H Link Layer”, 2nd International Symposium on Wireless Communication Systems 2005, Siena, Italy, Sep. 2005.

[1] Digital Video Broadcasting (DVB); Transmission System for Handheld Terminals (DVB-H) , ETSI EN 302 304 V1.1.1 (2004-11), European Telecommunications Standards Institute.