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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 葉丙成(Ping-Cheng Yeh) | |
| dc.contributor.author | Po-Hsi Lee | en |
| dc.contributor.author | 李柏希 | zh_TW |
| dc.date.accessioned | 2021-06-15T16:12:09Z | - |
| dc.date.available | 2020-08-25 | |
| dc.date.copyright | 2015-08-25 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2015-08-18 | |
| dc.identifier.citation | [1] WirelessHD. http://www.wirelesshd.org/.
[2] Wireless Gigabit Alliance. http://www.wigig.org/. [3] H. Singh, J. Oh, C. Kweon, X. Qin, H.R. Shao, and C. Ngo. A 60 GHz wireless net- work for enabling uncompressed video communication. Communications Magazine, IEEE, 46(12):71–78, 2008. [4] K. Sayood and J.C. Borkenhagen. Use of residual redundancy in the design of joint source/channel coders. Communications, IEEE Transactions on, 39(6):838–846, 1991. [5] Norbert Gortz. Iterative source-channel decoding using soft-in/soft-out decoders. In Information Theory, 2000. Proceedings. IEEE International Symposium on, page 173, 2000. [6] T. Hindelang, T. Fingscheidt, N. Seshadri, and R. Cox. Combined source/channel (de-)coding: can a priori information be used twice? In Information Theory, 2000. Proceedings. IEEE International Symposium on, pages 266–, 2000. [7] M. Adrat, P. Vary, and J. Spittka. Iterative source-channel decoder using extrinsic information from softbit-source decoding. In Acoustics, Speech, and Signal Pro- cessing, 2001. Proceedings. (ICASSP ’01). 2001 IEEE International Conference on, volume 4, pages 2653–2656 vol.4, 2001. 63[8] Norbert Gortz. On the iterative approximation of optimal joint source-channel de- coding. Selected Areas in Communications, IEEE Journal on, 19(9):1662–1670, 2001. [9] Marc Adrat and Peter Vary. Iterative source-channel decoding: Improved system de- sign using exit charts. EURASIP Journal on Advances in Signal Processing, 2005(6): 178541, 2005. [10] C. Berrou, A. Glavieux, and P. Thitimajshima. Near Shannon limit error-correcting coding and decoding: Turbo-codes. 1. In Communications, 1993. ICC 93. Geneva. Technical Program, Conference Record, IEEE International Conference on, vol- ume 2, pages 1064–1070. IEEE, 1993. [11] Wei-Chih Huang. Iterative 3D-MRF based Decoder for Uncompressed Wireless Transmission. Master’s thesis, National Taiwan University, Taiwan, 2013. [12] Yan Wang, Danpu Liu, and Mingliang Li. A survey on hierarchical modulation for high-definition video transmission based on IEEE 802.11n. In Communication Technology (ICCT), 2010 12th IEEE International Conference on, pages 1180–1183, 2010. [13] S.E. Hong and W.Y. Lee. Flexible Unequal Error Protection Scheme for Uncom- pressed Video Transmission over 60GHz Multi-Gigabit Wireless System. In Com- puter Communications and Networks (ICCCN), 2011 Proceedings of 20th Interna- tional Conference on, pages 1–6. IEEE, 2011. [14] Xinqiang Mo and Danpu Liu. An adaptive unequal error protection strategy for un- compressed video transmission over 60GHz WPAN systems. In Signal Processing, Communication and Computing (ICSPCC), 2013 IEEE International Conference on, pages 1–5, 2013. [15] Kuan-Yu Lin. An Unequal Error Protection Scheme for Uncompressed Wire- lessVideo Transmission Using Iterative Joint Source-Channel Decoder. Master’s thesis, National Taiwan University, Taiwan, 2014. 64[16] J. Kliewer, Norbert Gortz, and A. Mertins. On iterative source-channel image de- coding with markov random field source models. In Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP ’04). IEEE International Conference on, volume 4, pages iv–661–iv–664 vol.4, 2004. [17] Julian Besag. Spatial interaction and the statistical analysis of lattice systems. Jour- nal of the Royal Statistical Society. Series B (Methodological), (2):192–236, 1974. [18] H. Derin and Howard Elliott. Modeling and segmentation of noisy and textured images using gibbs random fields. Pattern Analysis and Machine Intelligence, IEEE Transactions on, PAMI-9(1):39–55, 1987. [19] L. Bahl, J. Cocke, F. Jelinek, and J. Raviv. Optimal decoding of linear codes for minimizing symbol error rate (corresp.). Information Theory, IEEE Transactions on, 20(2):284–287, 1974. [20] J.G. Proakis. Digital Communications, 2007. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/52335 | - |
| dc.description.abstract | 由於能夠提供數Gbps大的無線網路傳輸頻寬57-66GHz高頻微波的發展，因此無壓縮的高解析度視訊傳輸成為了家用網路的一項受矚目應用。然而，在如此高的頻率之下，訊號波衰退的速率以及受到雜訊干擾的程度都大幅提升，因此如何在如此低訊噪比的傳輸通道進行傳輸顯得相當的重要。在本論文中，我們提出了一種在傳送端決定能量分配策略的非平等資料保護架構。我們提出的非平等資料保護架構是針對利用基於三維馬可夫隨機場模型的迭代無線視訊解碼系統所設計的，根據在一個位元層裡的不同宏區塊擁有不相同的空間和時間冗餘性，在發送端分配最佳的傳輸能量策略，以達到最佳的解碼品質。為了精準地分配傳輸能量，在傳送端我們也用了相似的馬可夫模型來預測每個宏區塊的資料冗餘性。接著進一步利用拉格朗日乘數法來解決在固定傳輸能量之下，最大化解碼品質的問題。模擬結果顯示，所提出的宏區塊非平等資料保護架構，根據影像的性質，或多或少提升了解碼的品質。我們也結合了位元層的非平等資料保護架構以及我們所提出的宏區塊資料保護架構。比較的結果顯示，所提出的宏區塊非平等資料保護架構在影像富含時間冗餘性時比起位元層的非平等資料保護架構表現較佳。 | zh_TW |
| dc.description.abstract | Due to the development of 57-66GHz millimeter-wave, which provides huge bandwidth and multi-Gbps transmission data rate, uncompressed high-definition video transmission is becoming an interesting application over wireless personal area networks (WPANs). However, mmWaves signals have more attenuation than conventional low frequency signals. Hence, wireless transmission under this low SNR condition become an issue. In this thesis, we proposed a unequal error protection (UEP) scheme which determines the power distributing policy according to the redundancy of a macroblock for iterative 3D-MRF based decoder. The 3D-MRF based source decoder utilizes the spatial and temporal redundancy for each macroblock split from a bit-plane. To allocate the transmission power accurately, the encoder estimates the decoded video quality using such MRF model to obtain spatial and temporal redundancy for all macroblocks before transmission. The optimal power allocation problem, which corresponds to maximizing video quality in term of peak-to-noise ratio (PSNR) is then solved by Lagrange multiplier. Simulation results show that the proposed macroblock UEP scheme enhances the decoded visual quality depending on the video properties and content. The bit-plane UEP scheme is also combined with our proposed macroblock UEP scheme. We observe that the proposed macroblock UEP performs better than bit-plane UEP when the transmission video is rich in temporal redundancy. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T16:12:09Z (GMT). No. of bitstreams: 1 ntu-104-R02942041-1.pdf: 12948471 bytes, checksum: 137a3555a93040d4982a1e6e0738661b (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
致謝 iii 中文摘要 v Abstract vii Contents ix List of Figures xi List of Tables xv 1 Introduction 1 1.1 Wireless Uncompressed Video Transmission . . . . . . . . . . . . . . . . 1 1.2 Related Works Improving Wireless Uncompressed Video Transmission . 2 1.3 Main Work in This Thesis . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 MRF-Based ISCD for Uncompressed Video 5 2.1 3D MRF Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1 Low-Level MRF Model . . . . . . . . . . . . . . . . . . . . . . 6 2.1.2 Neighborhood System of 3D MRF Model . . . . . . . . . . . . . 7 2.2 Overview of 3D-MRF based SISO Decoder . . . . . . . . . . . . . . . . 11 2.2.1 Parameter Estimation in Decoder . . . . . . . . . . . . . . . . . 11 2.2.2 SISO Source Decoder . . . . . . . . . . . . . . . . . . . . . . . 13 ix2.3 3D-MRF based ISCD Structure . . . . . . . . . . . . . . . . . . . . . . . 15 3 Macroblock UEP Scheme and Optimization Problem 19 3.1 Optimization Problem of Macroblock UEP Scheme for Uncompressed Video Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.2 Estimation of Iterative 3D-MRF based Decoding Distortion . . . . . . . . 22 3.3 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.3.1 Distortion for Iterative Spatial-MRF based ISCD . . . . . . . . . 27 3.3.2 Distortion for Iterative Temporal-MRF based ISCD . . . . . . . . 29 3.3.3 Distortion for Iterative 3D-MRF based ISCD . . . . . . . . . . . 32 4 Optimization of Macroblock UEP Scheme for Iterative 3D-MRF based De- coder 33 4.1 UEP Scheme for ISCD Using MRF Source Decoder . . . . . . . . . . . . 33 4.2 Simulation Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4.2.1 UEP Scheme for Spatial-MRF based ISCD . . . . . . . . . . . . 37 4.2.2 UEP Scheme for for Temporal-MRF based ISCD . . . . . . . . . 42 4.2.3 UEP scheme for 3D-MRF based ISCD . . . . . . . . . . . . . . 46 5 Combination of Bit-plane UEP and Macroblock UEP 51 5.1 Combination Structure for Spatial-MRF ISCD . . . . . . . . . . . . . . . 51 5.2 Combination Structure for Temporal-MRF ISCD . . . . . . . . . . . . . 54 5.3 Combination Structure for 3D-MRF ISCD . . . . . . . . . . . . . . . . . 57 6 Conclusions and Future Works 61 6.1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.2 Future Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Bibliography 63 | |
| dc.language.iso | en | |
| dc.subject | 視訊傳輸 | zh_TW |
| dc.subject | 無線通訊 | zh_TW |
| dc.subject | 非平等資料保護 | zh_TW |
| dc.subject | 宏區塊 | zh_TW |
| dc.subject | 三維馬可夫隨機場 | zh_TW |
| dc.subject | Markov random fields | en |
| dc.subject | iterative joint source-channel decoding | en |
| dc.subject | wireless communication | en |
| dc.subject | unequal error protection | en |
| dc.subject | macroblock | en |
| dc.title | 利用迭代式三維馬可夫隨機場之無壓縮無線視訊傳輸系統的宏區塊非平等資料保護架構 | zh_TW |
| dc.title | A Macroblock Unequal Error Protection Scheme for Uncompressed Wireless Video Transmission Using Iterative 3D-MRF based Decoder | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 簡韶逸(Shao-Yi Chien),孟令三(Ling-San Meng) | |
| dc.subject.keyword | 宏區塊,非平等資料保護,無線通訊,視訊傳輸,三維馬可夫隨機場, | zh_TW |
| dc.subject.keyword | macroblock,unequal error protection,wireless communication,iterative joint source-channel decoding,Markov random fields, | en |
| dc.relation.page | 65 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2015-08-18 | |
| 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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| ntu-104-1.pdf 未授權公開取用 | 12.64 MB | Adobe PDF |
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