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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 顧孟愷 | |
dc.contributor.author | Chun-Lin Fan | en |
dc.contributor.author | 范君霖 | zh_TW |
dc.date.accessioned | 2021-06-13T03:13:21Z | - |
dc.date.available | 2011-08-29 | |
dc.date.copyright | 2006-08-29 | |
dc.date.issued | 2006 | |
dc.date.submitted | 2006-08-22 | |
dc.identifier.citation | [1] Jose Tellado, “Multicarrier Modulation with Low PAPR: Applications to DSL and Wireless,” 2000.
[2] K. G. Paterson and V. Tarokh, “On the existence and construction of good codes with low peak-to-average power ratios,” IEEE Trans. Inform. Theory, vol. 46, no. 6, pp. 1974–1987, Sept. 2000. [3] Vahid Tarokh, Hamid Jafarkhani, “On the Computation and Reduction of the Peak-to-Average Power Ratio in Multicarrier Communications”, IEEE Transactions on Communication, vol. 48, No.1, Jan. 2000. [4] Vahid Tarokh, Hamid Jafarkhani, “An Algorithm for Reducing the Peak to Average Power Ratio in a Multicarrier Communications System,” IEEE 49th Vehicular Technology Conference, vol. 1, pp. 680-684, 1999. [5] X. Li and J. Ritcey, “M Sequences for OFDM Peak-to-average Power Ration Reduction and Error Correction,” IEE Elect. Lett., vol. 33, pp. 554–555, Mar. 1997. [6] Gerhard Wunder and Holger Boche, “Peak value estimation of band-limited signals from their samples, noise enhancement and a local Characterization in the Neighborhood of an extremum,” IEEE Trans. On Signal Processing, vol. 51, no 3, pp. 771-780, Mar. 2003. [7] Gerhard Wunder, Simon Litsyn, “On the statistical distribution of the crest-factor of codes in OFDM transmission,” in Proc. IEEE Inform. Theory Workshop, Paris, Mar./Apr. 2003. [8] C. Shannon, “A mathematical theory of communication,” Bell System Technical Journal, vol. 27, no.3, pp. 378-423, 1948. [9] R. G. Gallager, “Low Density Parity Check Codes,” IEEE Transaction on Information Theory, vol. IT-8, pp. 21-28, Jan. 1962 [10] M. R. Tanner, “A recursive approach to low complexity codes,” IEEE Transaction on Information Theory, vol. 27, Sep. 1981. [11] F. R. Kschischang, B. J. Frey, and H. Loeliger, “Factor Graphs and the Sum-Product Algorithm,” IEEE Transactions on Information Theory, vol. 47, no. 2, pp. 498-519, Feb. 2001. [12] A.D.S. Jayalath, C. Tellambura, “A blind SLM receiver for PAR-reduced OFDM,” 2002 IEEE 56th Vehicular Technology Conference, vol. 1, 24-28, pp. 219-222, Sept. 2002. [13] R.W. Bauml, R.F.H. Fischer, J.B. Huber, “Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping,” Electronics Letters, vol. 32, no. 22, pp. 2056-2057, 24 Oct. 1996. [14] N. Ohkubo, T. Ohtsuki, “A peak to average power ratio reduction of multicarrier CDMA using selected mapping,” 2002 IEEE 56th Vehicular Technology Conference, vol. 4 , pp. 2086-2090, Sept. 2002. [15] H. G. Ryu and K. J. Yoon, “A New PAPR Reduction Scheme: SPW (Subblock Phase Weighting),” IEEE Trans. on Consumer Electronics. vol. 48, pp. 81-89, Feb. 2002. [16] S. H. Muller and J. B. Hüber, “OFDM with reduced peak-to-average. power ratio by optimum combination of partial transmit sequences,” Electron. Lett., vol. 33, no. 5, pp. 368–369, Feb. 1997. [17] B. S. Krongold and D. L. Jones, “PAR Reduction in OFDM via Active Constellation Extension,” IEEE Transactions on Broadcasting, vol. 3,pp. 258-268, September 2003. [18] B. S. Krongold and D. L. Jones, ``PAR Reduction in OFDM Via Active Constellation Extension', to appear in the Proceedings of the 2003 International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Hong Kong, Apr. 2003. [19] Kou, Y., Lu, W., and Antouniou, A., “New Peak to Average power ratio reduction algorithms for multicarrier communications”, IEEE transactions on circuits and systems, IEEE Transcactions on Circuits and Systems, vol. 51, no. 9, pp. 1790-1800, Sept 2004 [20] A. E. Jones and T. A. Wilkinson, “Combined coding for error control and increased robustness to system nonlinearities in OFDM,” Proc. of IEEE 46th Vehicular Technology Conference (VTC), vol. 2, pp. 904-908, Apr. 1996. [21] Pingyi Fan and Xiang-Gen Xia, “Block coded modulation for the reduction of the peak to average power ratio in OFDM systems,” in Wireless Communications and Networking Conference (WCNC ’99), vol. 3 , pp. 1095 – 1099, Sept. 1999. [22] A. Jones, T. Wilkinson, and S. Barton, 'Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes,' Electronics Letters, vol.30, no.25, pp.2098-2099, Dec, 1994. [23] Chih-Yan Yang, “Low-Density Parity-Check Coded OFDM System Design for Wireless Communication,” master thesis, NTU, 2005. [24] Ya-Cheng Wang, “Design and implementation of OFDM transmitter with Low Peak-to-Average Power Ratio,” master thesis, NTU, 2005. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31464 | - |
dc.description.abstract | Orthogonal Frequency Division Multiplexing (OFDM) is popular modulation scheme for wireless system. Because OFDM has advantages of multipath-delay-spread tolerance, immunity to frequency selective fading channel and high spectral efficiency, many wireless systems have adopted the OFDM technique as a choice. However, Peak-to-average ratio (PAPR) is a main drawback of OFDM. PAPR problem is caused by Inverse Discrete Fourier Transform (IDFT). IDFT makes the OFDM symbols with high PAPR. High PAPR increases the complexity and the cost of an OFDM system. So far, many various PAPR reduction schemes have been published. Most of them have high online computation complexity and must modify the architecture of OFDM system. We advocate an idea to solve PAPR problem in this thesis. The idea satisfies to use offline computation to replace online computation without modifying the architecture. We want to reduce the PAPR by finding out low PAPR codes. However, the solution space is too large, so exhaustive search is not efficient. We want to search low PAPR codes with search algorithm, so an efficient criterion is needed. We explain the criterion in our thesis. The target code of the thesis is the Low-Density Parity-Check (LDPC) code. The LDPC codes have received a lot of attention recently because of there excellent performance and low decoding complexity. Finally, some simulated result is presented in the thesis. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T03:13:21Z (GMT). No. of bitstreams: 1 ntu-95-R93922086-1.pdf: 1166862 bytes, checksum: e321fed33f783bc39aee182a36760a52 (MD5) Previous issue date: 2006 | en |
dc.description.tableofcontents | ABSTRACT III
TABLE OF CONTENTS IV LIST OF FIGURES V CHAPTER 1 : INTRODUCTION 1 1.1 OVERVIEW OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 2 1.2 DEFINITION OF PEAK-TO-AVERAGE POWER RATIO FOR OFDM SYSTEM 6 1.3 THESIS ORGANIZATION 12 CHAPTER 2 : RELATED WORK 13 2.1 SELECTED MAPPING 13 2.2 PARTIAL TRANSMIT SEQUENCE 15 2.3 ACTIVE CONSTELLATION EXTENSION 17 2.4 TONE RESERVATION 18 2.5 PAPR REDUCTION WITH CHANNEL CODING 21 CHAPTER 3 : PAPR ESTIMATION ALGORITHM FOR BLOCK CODE 23 3.1 PRINCIPLE OF PAPR ESTIMATION ALGORITHM 25 3.2 IMPLEMENTATION OF PAPR ESTIMATION ALGORITHM 31 3.4 ESTIMATION FOR CONVOLTIONAL CODES 33 3.4.1 Encoding of Convolutional Codes 33 3.4.2 Decoding of Convolutional Codes 34 3.5 ESTIMATION FOR LOW-DENSITY PARITY-CHECK CODES 36 3.5.1 Tanner Graph Description for LDPC Code Structure 37 3.5.2 Encoding of LDPC Codes 38 3.5.3 Decoding of LDPC Codes 38 CHAPTER 4 : EXPERIMENTAL RESULTS 40 4.1 SIMULATION RESULTS OF CONVOLUTIONAL CODES 40 4.2 SIMULATION RESULTS OF LDPC CODES 42 4.3 DISCUSSION OF SIMULATION RESULTS 44 CHAPTER 5 : CONCLUSION AND FUTURE WORK 48 REFERENCE 50 | |
dc.language.iso | en | |
dc.title | 低峰均值低密度奇偶校驗碼之搜尋演算法 | zh_TW |
dc.title | A Low-Density Parity-Check Code Search Algorithm for Low Peak-to-Average Power Ratio | en |
dc.type | Thesis | |
dc.date.schoolyear | 94-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 林宗男,洪士灝,廖俊睿 | |
dc.subject.keyword | 低峰均值,奇偶校驗碼, | zh_TW |
dc.subject.keyword | LDPC code,PAPR,PAR,Crest factor, | en |
dc.relation.page | 52 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2006-08-23 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 資訊工程學研究所 | zh_TW |
顯示於系所單位: | 資訊工程學系 |
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