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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鄭士康(Shyh-Kang Jeng) | |
| dc.contributor.author | Liang-Cheng Huang | en |
| dc.contributor.author | 黃亮誠 | zh_TW |
| dc.date.accessioned | 2021-06-13T04:50:30Z | - |
| dc.date.available | 2007-07-24 | |
| dc.date.copyright | 2006-07-24 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-07-15 | |
| dc.identifier.citation | [1] H. Sari, G. karma, “Transmission techniques for digital terrestrial TV broadcasting.” IEEE Commun., vol. 33, pp. 100-109, Feb. 1995.
[2] R. W. Chang and R. A. Gibby “A theoretical study of performance of an orthogonal multiplexing data transmission scheme,” IEEE Trans. Commum., vol. COM-16, pp.529-540, Aug. 1968. [3] R. Li and G. Stette, “Time-limited orthogonal multicarrier modulation schemes,” IEEE Trans. Commun., vol. 43,pp. 1269-1272, 1995 [4] C. Muschallik, “Improving and OFDM reception using an adaptive Nyquist window,” IEEE Trans. Consummer Electron., vol. 42, PP.259-269, Aug. 1996 [5] L. J. Cimini, Jr., “Frequency domain equalization of OFDM signal over frequency nonselective rayleigh fading channels,” Electron. Lett., vol 29, no. 16, pp. 1476-1477, Aug. 1993. [6] N. A. Dhahi et al., “Optimum finit-length equalization for muticarrier transceivers,” IEEE Trans. Commun., vol. 43, pp. 1269-1272. 1995. [7] Y. Zhao and S. Haggman “Intercarrier Interference Self-Cancellation scheme for OFDM communication systems,” IEEE Trans. Commum, vol. 49, no. 7, July 2001 [8] S. Alam, ”A general coding method to minimize intercarrier interference in OFDM mobile communication systems,” in Proc. Int. Wireless and Telecommunications symp./Exhibition(IWTS’97), vol. 1 pp.231-235 May. 1997. [9] Y. Mostofi, and D. C. Cox., “ICI Mitigation for pilot-aided OFDM mobile systems,” IEEE Trans. Commun., vol. 4, no.2, March 2005. [10] Y. Hongwei, L. Guangjie, C. Liyu, and G. Luoning “An adaptive ICI self-cancellation scheme to compensate the frequency offset for OFDM systems,” IEEE Conference. Vehicular Technology, vol. 14, no. 25, pp 2658 - 2662 April 2003. [11] P.M. Ebert, “Data transmission by frequency-division multiplexing using the discrete Fourier transform,” IEEE Trans. Commun., vol. 19, no. 5, pp. 628-634, Oct. 1971. [12] M. Russell and G. L. Stiiber, “Interchannel interference analysis of OFDM in a mobile environment,” in Proc. IEEE VTC, 1995, pp. 820-824. [13] M. C. Jeruchim, P. Balaban ad K. S. Shanmugan, Simulation of communication systems, 2nd ed. New York: Kluwer Academic/Plenum Publishers. 2000 [14] B. Sklar, “Rayleigh fading channels in mobile digital communication system part1: Characterization,” IEEE Communications magazine, pp. 90-100, July 1997. [15] W. C. Jake, Micro mobile communication, Wiley, New York, 1974. [16] P. Dent, G. E. Bottomley and T. Croft, “Jakes fading model revisited,” Electronics letters, vol. 29, no, 13, pp. 1162-1163, June 1993. [17]”Universal mobile telecommunication system(UMTS);Deloyment aspects(3GPP TR 25.943 version 5.1.0 release 5)”, ETSI(European Telecommunications standards institute), TR 125 943, v5.1.0, June 2002. [18] W. G. Jeon, K. H. Chang and Y. S. Cho, “An equalization technique for orthogonal frequency-division multiplexing systems in time-varying multipath channels,” IEEE Tans. Commun., vol. 47, no. 1, pp. 27-32, Jan. 1999. [19] T. S. Rappaport, Wireless Communication-Principles and practice second edition Prentice-Hall 1996. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/33613 | - |
| dc.description.abstract | 在本篇論文中，我們將要討論都卜勒效應對正交分頻多工系統(orthogonal frequency division multiplexing)的影響。在許多行動通訊的應用上，都卜勒效應會造成通道時變性，使正交分頻多工系統產生載波間互相干擾(inter-carrier interference, ICI)。並且，隨著載波頻率，物體速度和符號長度增加，都卜勒效應所產生的載波間互相干擾會更嚴重。所以，我們必須去設法減緩載波間互相的干擾。
這本篇論文中，我們使用自我消除載波互相干擾(ICI self-cancellation)這個方法去解決都卜勒所產生的載波互相干擾，並且討論其特性。我們也提出一種方法來增進自我消除載波互相干擾的效能。最後，我們再對可適性的自我消除載波互相干擾加以探討。 | zh_TW |
| dc.description.abstract | In this thesis, we are going to discuss the Doppler effect in OFDM (orthogonal frequency division multiplexing) systems. In many mobile applications, Doppler effect makes the channel time-varying and causes inter-carrier interference (ICI) in OFDM systems. The ICI induced by Doppler will be severe as the carrier frequency, object velocity or symbol duration increases. Therefore, there is a need for ICI mitigation in OFDM systems.
In this thesis, we use ICI self-cancellation scheme to improve the OFDM systems under mobile condition, and discuss its characteristics under mobile condition. We also propose a method to improve ICI self-cancellation and have a good performance. Finally, we are going to discuss an adaptive scheme using ICI self-cancellation. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T04:50:30Z (GMT). No. of bitstreams: 1 ntu-95-R93942080-1.pdf: 651627 bytes, checksum: 9d855c730766d6d72786e2c91ff03be6 (MD5) Previous issue date: 2006 | en |
| dc.description.tableofcontents | Chapter 1 Introduction..................................................................1
1.1 Motivation………………………………………………………………..1 1.2 Literature Survey…………………………………………………………3 1.3 Structure of This Thesis…………………………………………………3 Chapter 2 OFDM Communication Systems in Wireless Channels…..5 2.1 Basic of OFDM Systems………………………………………………...5 2.2 Structure of OFDM Systems…………………………………………….8 2.3 Guard Interval and Cyclic Prefix in OFDM Systems……………….13 2.4 Inter-carrier Interference in OFDM Systems………………………..14 2.5 Wireless Channel Model……………………………………………….16 2.5.1 Channel Parameters…………………………………………….…17 2.5.2 Doppler Effect…………………………………………………..…20 2.5.3 Simulation Models for Multipath Channels…………………….21 2.5.4 Typical Channel Models………………………………………….23 2.5.5 COST 259 Channel Model………………………………………..25 Chapter 3 Mitigating ICI in Doppler Spread Channel………………31 3.1 Introduction……………………………………………………………..31 3.2 ICI Self-cancellation…………………………………………………...32 3.3 ICI Self-cancellation Scheme in the Presence of Doppler Spread and Carrier Frequency Offset……………………………………………..38 3.4 Doppler Estimation and ICI Self-cancellation………………………40 3.5 Adaptive ICI Self-cancellation Modulation………………………….45 Chapter 4 Simulations and Discussions………………………………..49 4-1 ICI Self-cancellation in a Mobile Channel…………………………..51 4-2 ICI Self-cancellation in a Mobile Channel with Frequency Offset.54 4.3 Doppler Estimation in ICI Self-cancellation………………………..57 4.4 Adaptive Self-cancellation Scheme…………………………………..62 Chapter 5 Conclusions…………………………………………………….65 References…………………………………………………………………..67 | |
| dc.language.iso | en | |
| dc.subject | 正交分頻多工 | zh_TW |
| dc.subject | 都卜勒效應 | zh_TW |
| dc.subject | 相鄰載波干擾 | zh_TW |
| dc.subject | ICI self-cancellation | en |
| dc.subject | Doppler estimation | en |
| dc.subject | OFDM | en |
| dc.title | 都卜勒效應所產生之正交分頻通訊系統相鄰載波間干擾(ICI)抑制方法研究 | zh_TW |
| dc.title | Methods for Mitigating Inter-carrier Interference in OFDM Communication Systems Induced by Doppler Effect | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 李學智(Hsueh-Jyh Li),曹恆偉(Hen-Wai Tsao),徐忠枝(Jong-Jy Shyu) | |
| dc.subject.keyword | 正交分頻多工,都卜勒效應,相鄰載波干擾, | zh_TW |
| dc.subject.keyword | OFDM,Doppler estimation,ICI self-cancellation, | en |
| dc.relation.page | 70 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-07-17 | |
| 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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