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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/38137完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 李學智 | |
| dc.contributor.author | Hao-Chun Lin | en |
| dc.contributor.author | 林浩群 | zh_TW |
| dc.date.accessioned | 2021-06-13T16:26:54Z | - |
| dc.date.available | 2006-07-20 | |
| dc.date.copyright | 2005-07-20 | |
| dc.date.issued | 2005 | |
| dc.date.submitted | 2005-07-15 | |
| dc.identifier.citation | [1] Jukka Henriksson, DVB-H – Digital TV for Handhelds, Nokia
http://www.nectec.or.th/archives/downloaddoc.php?hid=44 [2] ETSI EN 101 190 V1.1.1 ( 1997-12 ), Implementation Guidelines for DVB-T Services, Transmission Aspects [3] ETSI EN 300 744 V1.5.1 ( 2004-06 ), Framing Structure, Channel Coding and Modulation for Digital Terrestrial Television [4] ETSI EN 302 304 V1.1.1 ( 2004-06 ), Transmission System for Handheld Terminals [5] ETSI EN 102 377 V1.1.1 ( 2005-02 ), DVB-H Implementation Guide [6] Frieder Sanzi and Joachim Speidel, An Adaptive Two-Dimensional Channel Estimator for Wireless OFDM with Application to Mobile DVB-T, IEEE Transactions on Broadcasting, Volume. 46, No. 2, June 2000 [7] Ye Li, Pilot-Symbol-Aided Channel Estimation for OFDM in Wireless Systems, IEEE Transactions on Vehicular Technology, Volume. 49, Issue 4, July 2000 Pages:1207–1215 [8] Che-Shen Yeh and Yinyi Lin, Channel Estimation Using Pilot Tones in OFDM Systems, IEEE Transactions on Broadcasting, Volume. 45 , Issue. 4 , Dec. 1999 Pages:400–409 [9] Pei-Yun Tsai and Tzi-Dar Chiueh, Frequency-Domain Interpolation-Based Channel Estimation in Pilot-Aided OFDM System, IEEE 2004 [10] R. S. Sherratt and S. L. Linfoot, Deterministic Equalization and Results of a DVB-T Multipath Equalizer for both 16-QAM and 64-QAM Operation, IEEE Transactions on Consumer Electronics, Volume. 49, Feb.2003, Pages: 21-26 Reference 90 [11] Sherratt R.S., Performance and Conformance Results of the Deterministic DVB-T Equalizer, IEEE Transactions on Consumer Electronics, Volume. 50, Issue. 1, Feb 2004, Pages: 95–99 [12] S.Tomasin, A.Gorokhov, H.Yang and J.P.Linnartz, Achieving Mobility for DVB-T by Signal Processing for Doppler Compensation, Philips Research Laboratories ( Natlab ), The Netherlands [13] Torsten Jaekel, Testing of DVB-H System, DiBroC, November 2004 http://www.broadcastpapers.com/testmeasurement/DiBroCDVBTest-print.htm [14] 曾宏儒, DVB-T Mobile Reception Performance Analysis, 國立台灣大學電信工 程學研究所 碩士論文, 2003 [15] 陳怡如, Baseband Transceiver Design for the DVB-Terrestrial Standard, 國立台 灣大學電子工程學研究所 碩士論文, 2004 [16] 林浩群, 蘇漢強, 數位無線地面電視單頻網建置技術之分析與研究, 交通部電 信總局研究計畫, 2004 | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/38137 | - |
| dc.description.abstract | 手提式數位無線廣播電視 ( DVB-H ) 是以地面數位無線廣播電視 ( DVB-T )為基礎下，專門為手提式裝置如手機、PDA或Smart Phone等所設計之系統。此二系
統在行動接收方面都會因傳輸通道的快速改變而有所影響。為了能達到較高的移動速度，現有的地面數位無線廣播電視系統都會利用雙接收天線或較複雜之信號處理方式來做為解決方案。但是手提式數位無線廣播電視系統主要是設計給以電 池為電源的小螢幕接收機使用。它必需能達到不管在室內、室外或是行動接收的環境下，都能以單根接收天線來接收各種多媒體服務。 在此論文中，我們利用地面數位無線廣播電視標準中所提供之錯誤修正碼，來改善所接收的信號，以達到更高的移動速度。而新的接收機架構經過最佳化後，可減少硬體複雜度。由模擬的結果可以看出，在以單根接收天線為前提下，能夠達到更高的移動速度和更小的功率需求。. | zh_TW |
| dc.description.abstract | DVB-H ( Digital Video Broadcasting-Handhelds ) dedicated for handhelds is basedon DVB-T ( Digital Video Broadcasting-Terrestrial ). Mobile receptions of both systemsare significantly affected by the fast changing transmission channel. For the purpose ofachieving higher speeds, most of the current solutions for DVB-T propose to use twoantennas at the receiver and a more elaborate signal processing for the channelestimation. But the essential commercial requirements of DVB-H were found to be abattery-powered mobile terminal with a small screen. It should be able to receivemultimedia services using a single antenna in the portable, mobile and indoorenvironments.
In this thesis, we exploit the error correction capabilities provided by the channel coding of the DVB-T standard to improve the reliability of the received signals for the purpose of increasing the maximum tolerable doppler frequency. The building blocks of the new structure have been optimized in order to reduce the complexity. Simulations show that the use of the new structure with single antenna yields a better improvement in terms of the maximum tolerable speed and the minimum required SNR. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T16:26:54Z (GMT). No. of bitstreams: 1 ntu-94-R92942044-1.pdf: 2013649 bytes, checksum: ee49969c00e20cb6f1cdc08c8921bacf (MD5) Previous issue date: 2005 | en |
| dc.description.tableofcontents | Abstract I
Contents III List of Figures VII List of Tables XIII Chapter 1 Introduction …………………………………………………………….1 1.1 Thesis Overview ………………………………………………………………2 Chapter 2 The Overview of DVB-H ……………………………………………….3 2.1 DVB-H Outline ………………………………………………………………..3 2.2 The Comparison with each Transmission Technology ……………………...4 2.3 The Structure of DVB-H ……………………………………………………...6 2.3.1 Link Layer ……………………………………………………………….6 2.3.2 Physical Layer …………………………………………………………...7 2.3.3 The Channel Bandwidth of DVB-H ……………………………………...8 2.3.4 The Comparison between 2k/4k/8k Transmission Mode ………………...9 2.3.5 Hierarchical Modulation and Multiplexing …………………………….10 Chapter 3 The Structure of DVB-H Transmitter in Physical Layer …………...13 3.1 Transport Multiplex Adaptation and Randomization for Energy Dispersal ……………………………………………………….15 3.2 Outer Coder …………………………………………………………………16 3.3 Outer Interleaver ……………………………………………………………17 Contents IV 3.4 Inner Coder ………………………………………………………………….18 3.5 Inner Interleaver …………………………………………………………….20 3.5.1 DEMUX ………………………………………………………………22 3.5.2 Bit Interleaver …………………………………………………………22 3.5.3 Symbol Interleaver ……………………………………………………23 3.5.4 In-depth Symbol Interleaver …………………………………………..25 3.6 Signal Constellation and Mapping …………………………………………26 3.7 OFDM Modulation ………………………………………………………….30 3.7.1 OFDM Modulator ……………………………………………………..30 3.7.2 Guard Interval and Cyclic Prefix ……………………………………...32 3.7.3 OFDM Frame Structure ……………………………………………….33 3.8 The Reference Signal ………………………………………………………..37 3.8.1 Positions of the Continual Pilot Carriers ……………………………...38 3.8.2 Positions of the Scatter Pilot Carriers …………………………………40 3.8.3 TPS ( Transmission Parameter Signaling ) ……………………………43 Chapter 4 The Structure of DVB-H Receiver in Physical Layer ……………….47 4.1 A New Structure to Improve the Performance of the Receiver …………..47 4.2 Channel Estimation …………………………………………………………50 4.2.1 Scatter Pilot Extraction ………………………………………………..51 4.2.2 Time Domain Interpolation …………………………………………...52 4.2.3 Frequency Domain Interpolation ……………………………………..53 4.3 FEQ ( Frequency Equalizer ) ………………………………………………54 4.4 Demapper ……………………………………………………………………55 4.5 Inner Deinterleaver …………………………………………………………57 4.6 Viterbi Decoder ……………………………………………………………...58 Contents V 4.7 Convolutional Deinterleaver ……………………………………………….59 4.8 Reed-Solomon Decoder …………………………………………………….59 Chapter 5 Simulation Results and Comparison ………………………………...63 5.1 Channel Model ………………………………………………………………63 5.2 The Simulation Results in the Static Channel Model ……………………..66 5.2.1 The Comparison between Modes of CodeRate and Methods of Equalization ……………………………………………….66 5.2.2 The Comparison between Signal Constellations and Methods of Equalization ……………………………………………….68 5.2.3 The Comparison between Signal Constellations and Modes of Code Rate …………………………………………………...69 5.2.4 The Comparison between Channel Models …………………………...71 5.3 The Simulation Results in the Mobile Channel Model ……………………72 5.3.1 The Comparison between Methods of Equalization and Doppler Frequency in Different Channel Models ……………………..73 5.3.2 The Comparison between Interleavers and the FFT Modes of the OFDM Modulation in the TU6 Channel Model ………………..78 5.3.3 The Comparison of the Maximum Tolerable Doppler frequency in the TU6 Channel Model …………………………………………...81 Chapter 6 Conclusion ……………………………………………………………..85 Reference ……………………………………………………………………………...89 | |
| dc.language.iso | en | |
| dc.subject | 正交分頻多工 | zh_TW |
| dc.subject | 位無線廣播電視 | zh_TW |
| dc.subject | 手提式數 | zh_TW |
| dc.subject | QEFIP | en |
| dc.subject | DVB-T | en |
| dc.subject | DVB-H | en |
| dc.subject | 2d | en |
| dc.subject | QEF | en |
| dc.subject | MPE-FEC | en |
| dc.subject | OFDM | en |
| dc.title | DVB-H 系統的傳輸效能模擬 | zh_TW |
| dc.title | Transmission Performance Simulations for DVB-H System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 93-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 曹恆偉,陳銘憲,鐘嘉德,陳光禎 | |
| dc.subject.keyword | 手提式數,位無線廣播電視,正交分頻多工, | zh_TW |
| dc.subject.keyword | DVB-H,DVB-T,OFDM,MPE-FEC,QEF,QEFIP,2d, | en |
| dc.relation.page | 90 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2005-07-15 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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