臺灣博碩士論文加值系統

數位多媒體時代的來臨與快速成長，科技產品也朝向多樣化與高品質發展。傳統廣播的AM與FM系統使用類比調變技術單純傳送聲音資訊，品質與功能已無法完全滿足人們對多媒體資訊的要求。採用數位調變技術可提高傳統廣播聲音品質的數位音訊廣播(Digital Audio Broadcasting , DAB)已應運而生，其單頻網路、抗多重路徑干擾、單一頻道含多節目及可傳輸影像、圖片、文字、數據等多媒體訊息等特性功能，使得廣播發展走入多樣性服務與數位多媒體傳輸時代。
本論文建立一個ARM-based數位廣播隨選服務系統，主要包含接收端與發射端二部份。接收端使用Samsung S3C4510B為平台構架，整合射頻、基頻IC與D/A等周邊電路建立DAB接收系統平台，並整合GPRS傳輸模組使得本DAB接收系統具備隨選服務功能。而在發射端部份除了DAB發射機設備，另外利用Visual Basic撰寫人機介面之server平台，其功能除了包含文字與圖片的傳輸，另外增設簡訊收發、手機撥打及TCP/IP網路連結等功能，逹到提供用戶即時隨選服務之雙向傳輸功能。

As the digital multimedia related technologies being developed rapidly, the demand on the high quality and diversity of the high-tech products is increasingly. The traditional AM and FM broadcasting systems which use analog technologies to deliver audio information may have not be able to content with people’s requisition for multimedia information. The newly developed DAB (Digital Audio Broadcasting) system uses digital modulation techniques and can provide user very good quality of multimedia information. The DAB system has many advantages, for example, achieving single frequency networks; can against the severe multi-path effects, can convey six high-quality stereo programs and deliver multimedia (video, image, text and data). Therefore, the broadcasting service has been moving towards the era of digital multimedia transmission.
In this thesis, we employ the Advanced RISC Machine (ARM) as a key controller to implement a DAB service on demand system. This system consists of a receiver and a transmitter system. Using the Samsung S3C4510B as the controller and integrating tuner, baseband and D/A chips, we build up a receiver platform. A GPRS module also is included in the receiving system so that the developed DAB receiver can achieve the uplink transmission. In the transmitter side, besides the DAB transmitter, by using Visual Basic, we also carry out a service user interface and a server system on PC so that the transmitter side can response the users’ service requests. Based on the design functions of the developed DAB transmitter and receiver system, the multimedia service on demand through the DAB channel can be achieved and also be verified.

第一章 緒 論 1
1.1 研究動機與目的 1
1.2 研究方法與內容 2
第二章 數位廣播系統架構介紹 4
2.1 DAB系統架構介紹 4
2.1.1 傳輸機制(Transport Mechanisms) 4
2.1.2 音訊編碼(Audio coding) 6
2.1.3 編碼正交分頻多工(COFDM) 6
2.1.4 單頻網(SFN) 7
2.2 DAB發射與接收系統架構 9
2.2.1 DAB發射系統 9
2.2.2 DAB接收系統 10
2.3 DAB多媒體傳輸系統 11
2.3.1 DAB多媒體發射系統架構 11
2.3.2 DAB多媒體接收系統架構 12
2.4 DAB多媒體物件傳輸方法 12
2.4.1 物件重覆傳送(Repetition on Object Level) 13
2.4.2 片段重覆傳送(Repetition of Data Groups/Segments) 13
2.4.3 插入標頭傳送(Insertion of Additional Header Information) 14
2.4.4 物件交叉傳送(Interleaving Objects in One MOT Stream) 14
第三章 ARM RISC嵌入式系統介紹 15
3.1 ARM RISC 處理器介紹 15
3.2 ARM RISC核心架構 16
3.2.1 Application ARM Core 16
3.2.2 Embedded ARM Core 17
3.2.3 Secure Core 17
3.3 ARM7 TDMI 18
3.3.1 ARM7TDMI處理器暫存器 18
3.3.2 3-Stage Pipeline 20
3.3.3 匯流排AMBA 21
3.3.4 記憶體 21
第四章 ARM-based 數位廣播隨選服務系統設計 23
4.1 整體系統架構 23
4.2 ARM-based數位廣播隨選服務發射系統 24
4. 2.1 硬體設備 24
4. 2.2 PC-Server軟體設計 25
4.3 ARM-based數位廣播隨選服務接收系統 28
4.3.1 硬體設計 29
4.3.2 軟體設計 38
第五章 ARM-based DAB隨選服務系統實現與測試 40
5.1 DAB隨選服務發射端Server實現 40
5.2 ARM-Based 數位廣播隨選服務接收機平台實現 42
5.3 ARM-Based 數位廣播隨選服務接收機平台測試 43
5.4 ARM-Based數位廣播隨選服務傳輸系統功能驗證 48
5.4.1 DAB接收機服務要求 49
5.4.2 DAB發射機Server服務回應 49
5.4.3 DAB接收機接收服務回應 52
第六章 結 論 54
參考文獻 55

[1]“Digital Audio Broadcasting (DAB); Multimedia Object Transfer (MOT) protocol,” ETSI EN 301 234 V1.2.1, Feb. 1999.
[2] “Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers,” ETSI EN 300 401 V1.3.3, Sept. 2001.
[3]“Digital Audio Broadcasting (DAB); Rules of Operation for the Multimedia Object Transfer Protocol,” ETSI TR 101 497 V1.1.1, Jul. 2002.
[4] “Digital Audio Broadcasting (DAB); Multimedia Object Transfer (MOT) protocol,” ETSI EN 301 234 V1.1.1, Jan. 1998.
[5] “Digital Audio Broadcasting (DAB); MOT Slide Show; User Application Specification,” ETSI TS 101 499 V1.1.1, Jul. 2001.
[6]楊友銘，“數位廣播接收機之設計與實現”，南台科技大學電子工程研究所碩士論文， 2004。
[7]張郁斌、余兆棠、楊友銘， “數位音訊廣播接收系統設計與實現” ，第二屆通訊應用研討會，2004年3月。
[8]張郁斌、郭俊雄、余兆棠， “DAB多媒體廣播服務傳輸系統研究與實現” ，2005數位生活與網際網路科技研討會，國立成功大學，2005。
[9]ARM. [Online]. Available: http://www.arm.com/。