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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鐘嘉德(Char-Dir Chung) | |
| dc.contributor.author | Chia-Hsun Wu | en |
| dc.contributor.author | 吳佳勳 | zh_TW |
| dc.date.accessioned | 2021-06-13T05:47:11Z | - |
| dc.date.available | 2006-07-18 | |
| dc.date.copyright | 2006-07-18 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-07-10 | |
| dc.identifier.citation | [1] C. D. Chung, Correlatively Coded OFDM,' unpublished and revised July 24, 2005 and May 10, 2005.
[2] Y. Zhao, J. D. Leclercq, and S. G. HÄaggman, Intercarrier Interference Compression in OFDM Communication Systems by Using Correlative Coding,' IEEE Commu. Latters, vol. 2, no. 8, pp. 214-216, Aug. 1998. [3] H. G. Ryu, Y. S. Li, and J. S. Park, An improved ICI Reduction Method in OFDM Communication System,' IEEE Trans. Broadcast., vol. 51, no. 3, pp. 395-400, Sep. 2005. [4] H. G. Ryu and Y. S. Li, Phase noise analysis of the OFDM communication system by the standard frequency deviation,' IEEE Trans. Cons. Electron., vol. 49, no. 1, pp. 41-47, Feb. 2003. [5] J. G. Proakis, Digital Communications: McGraw-Hill, 2000. [6] Y. Fu, S. G. Kang, and C. C. Ko, A new scheme for PAPR reduction in OFDM systems with ICI self-cancellation,' in Proc. VTC 2002-Fall, 2002 IEEE 56th Vehicular Technology Conf., vol. 3, Sep. 2002, pp. 1418-1421. [7] Y. Zhao and S. G. HÄaggman, Sensitivity to Doppler shift and carrier frequency errors in OFDM systems-the consequence and solutions,' in Proc. IEEE 46th VTC, Altlanta, GA, Apr. 28-May 1 1996, pp. 1564-1568. [8] Y. Zhao and S. G. HÄaggman, Intercarrier interference self-cancellation scheme for OFDM mobile communication systems,' IEEE Transactions on Communications, vol. 49, no. 7, pp. 1185-1191, july 2001. [9] A. N. Husna, S. Y. S. Kamilah, B. Ameruddin, and E. Mazlina, Intercarrier interference (ICI) analysis using correlative coding OFDM system,' in Porc. 2004 RF and Microwave Conf., Subang, Selangor, Malaysia, Oct. 5-6, 2004, pp. 235-237. [10] Armstrong, Analysis of new and existing methods of reducing inter-carrier interference due to carrier frequency o®set in OFDM,' IEEE Trans. on Commun., vol. 47, pp. 365-369, Mar. 1999. [11] B. Ai, J. h. Ge, Y. Wang, S. y. Yang, P. Liu and G. Liu, Frequency Offset Estimation for OFDM in Wireless Communications ,' IEEE Trans. Cons. Electron., vol. 50, no. 1, pp. 73-77, Feb. 2004. [12] Z. jianhua, H. Rohling and Z. Ping, Analysis of ICI Cancellation Scheme in OFDM Systems With Phase Noise,' IEEE Trans. Broadcast., vol. 50, no. 2, Jun. 2004. [13] M. K. Simon, S. M. Hinedi, and W. C. Lindsey, Digital Communication Techniques. Englewood Cli®s, NJ: Prentice Hall, 1994. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/33839 | - |
| dc.description.abstract | 本篇論文所要探討的主題是相關性編碼正交分頻多工（Correlatively Coded Orthogonal Frequency Division Multiplexing，簡稱 CE-OFDM）訊號之次載波間的相互干擾（Inter-carrier Interference，簡稱 ICI）。首先，吾人先對 CE-OFDM 訊號帶有保護區間（Guard Interval）為循環字首（Cyclic Prefix）及全為零的傳輸資料（Zero Padding）分別建立所屬之 ICI 問題數學模型。其次，則使用所定義之兩個指標：平均載波干擾比（Average Carrier to Interference Ratio）及最小載波干擾比（Minimum Carrier to Interference Ratio）著眼於正規化頻率偏移量（Normalized Frequency Offset）的比值，個別衡量以上所述兩種訊號在接收端遭受頻率偏差所導致的 ICI 影響程度。接下來，吾人對CE-OFDM 訊號及未編碼之OFDM 訊號採用訊號共軛法（Data-Conjugate Method）消除因為頻率偏差所致之ICI。最後，吾人會組成訊號之參數對已編碼及未編碼之訊號做效能方面之比較。 | zh_TW |
| dc.description.abstract | This thesis presents the investigation of inter-carrier interference (ICI) in correlatively coded orthogonal frequency-division multiplexing (OFDM) communication system. First of all, we establish the mathematical model of the ICI problem individually for CP-OFDM and ZP-OFDM, which are the correlatively coded OFDM signals with cyclic prefix and with zero padding, respectively. Then we will take the average and minimum carrier-to-interference radio (CIR) respect to normalized frequency offset as two major indicators when measuring the ICI problem. Secondly, the data-conjugate method of ICI self-cancellation is studied to reduce ICI effectively and the system performance of the data-conjugate method is compared with the normal OFDM. Finally, we will make a comparison between the systems which we have discussed above in different system parameters in the conclusion chapter. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T05:47:11Z (GMT). No. of bitstreams: 1 ntu-95-R93942085-1.pdf: 943498 bytes, checksum: 14c906d79d63e07ecb1fd1c667bdd15a (MD5) Previous issue date: 2006 | en |
| dc.description.tableofcontents | Contents
Contents I List of Figures III List of Tables VI 1 Introduction 1 2 Introduction to CE-OFDM 4 2.1 CE-OFDM Signals [1] . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 PSD of CE-OFDM Signals [1] . . . . . . . . . . . . . . . . . . . . . 6 3 ICI of CE-OFDM 14 3.1 Introduction to ICI . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 ICI Analysis of CE-CP-OFDM Signals . . . . . . . . . . . . . . . . 15 3.2.1 Analysis and Comparison of Average CIR . . . . . . . . . . 16 3.2.2 Analysis and Comparison of Minimum CIR . . . . . . . . . 23 3.3 ICI Analysis of CE-ZP-OFDM Signals . . . . . . . . . . . . . . . . 26 3.3.1 Analysis and Comparison of Average CIR . . . . . . . . . . 27 3.3.2 Analysis and Comparison of Minimum CIR . . . . . . . . . 30 3.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4 ICI of CE-OFDM with Data-Conjugate Method 35 4.1 Introduction to DCM [3] . . . . . . . . . . . . . . . . . . . . . . . . 36 4.2 ICI Analysis of CP-OFDM Signals with DCM . . . . . . . . . . . . 37 4.2.1 Analysis and Comparison of Average CIR . . . . . . . . . . 38 4.2.2 Analysis and Comparison of Minimum CIR . . . . . . . . . 45 4.3 ICI Analysis of ZP-OFDM Signals with DCM . . . . . . . . . . . . 48 4.3.1 Analysis and Comparison of Average CIR . . . . . . . . . . 49 4.3.2 Analysis and Comparison of Minimum CIR . . . . . . . . . 53 4.4 PSD of CE-OFDM signals with DCM . . . . . . . . . . . . . . . . . 55 4.5 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5 Conclusion 64 A 65 Bibliography 67 List of Figures 2.1 Block diagram of CE-OFDM system [1] . . . . . . . . . . . . . . . . 5 2.2 Illustration of CE-OFDM symbol with guard interval . . . . . . . . 6 2.3 Power spectral density of CE-CP-OFDM signals . . . . . . . . . . . 8 2.4 Power spectral density of CE-ZP-OFDM signals . . . . . . . . . . . 8 2.5 Equivalent lowpass PSD comparison between CE-CP-OFDM, CE- ZP-OFDM and Uncoded OFDM . . . . . . . . . . . . . . . . . . . . 9 2.6 illustration of two adjacent subcarriers of coded OFDM . . . . . . . 10 3.1 E®ect of frequency o®set . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Block diagram of the CE-OFDM system for ICI analysis . . . . . . 16 3.3 Average CIR comparison between Uncoded OFDM and CE-CP- OFDM (N = 64; Tg = T=8) . . . . . . . . . . . . . . . . . . . . . . . 20 3.4 Average CIR comparison between CE-CP-OFDM with di®erent N (L = 1; Tg = T=8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.5 Average CIR comparison between Uncoded OFDM and CE-CP- OFDM (L = 1;N = 64) . . . . . . . . . . . . . . . . . . . . . . . . 22 3.6 Minimum CIR comparison between Uncoded OFDM and CE-CP- OFDM (N = 64; Tg = T=8) . . . . . . . . . . . . . . . . . . . . . . . 24 3.7 Minimum CIR comparison between CE-CP-OFDM with di®erent N (L = 1; Tg = T=8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.8 Minimum CIR comparison between Uncoded OFDM and CE-CP- OFDM (L = 1;N = 64) . . . . . . . . . . . . . . . . . . . . . . . . 26 3.9 Average CIR comparison between Uncoded OFDM and CE-ZP- OFDM (N = 64) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.10 Average CIR comparison between CE-ZP-OFDM with di®erent N (L = 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.11 Minimum CIR comparison between Uncoded OFDM and CE-ZP- OFDM (N = 64) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.12 Minimum CIR comparison between CE-ZP-OFDM with di®erent N (L = 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.1 Block diagram of the OFDM system using the DCM. [3] . . . . . . 36 4.2 Block diagram of the CE-OFDM system using the DCM for ICI analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.3 Average CIR comparison between Uncoded OFDM and CE-CP- OFDM (N = 64; Tg = T=8; with DCM) . . . . . . . . . . . . . . . . 43 4.4 Average CIR comparison between CE-CP-OFDM with di®erent N (L = 1; Tg = T=8; with DCM) . . . . . . . . . . . . . . . . . . . . . 44 4.5 Average CIR comparison between Uncoded OFDM and CE-CP- OFDM (L = 1;N = 64; with DCM) . . . . . . . . . . . . . . . . . . 45 4.6 Minimum CIR comparison between Uncoded OFDM and CE-CP- OFDM (N = 64; Tg = T=8; with DCM) . . . . . . . . . . . . . . . . 46 4.7 Minimum CIR comparison between CE-CP-OFDM with di®erent N (L = 1; Tg = T=8; with DCM) . . . . . . . . . . . . . . . . . . . . . 47 4.8 Minimum CIR comparison between Uncoded OFDM and CE-CP- OFDM (L = 1;N = 64; with DCM) . . . . . . . . . . . . . . . . . . 48 4.9 Average CIR comparison between Uncoded OFDM and CE-ZP- OFDM (N = 64; with DCM) . . . . . . . . . . . . . . . . . . . . . 52 4.10 Average CIR comparison between CE-ZP-OFDM with di®erent N (L = 1; with DCM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 4.11 Minimum CIR comparison between Uncoded OFDM and CE-ZP- OFDM (N = 64; with DCM) . . . . . . . . . . . . . . . . . . . . . 54 4.12 Minimum CIR comparison between CE-ZP-OFDM with di®erent N (L = 1; with DCM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 4.13 Power spectral density of CE-CP-OFDM signals with DCM (L=1) . 57 4.14 Power spectral density of CE-CP-OFDM signals with DCM (L=2) . 57 4.15 Power spectral density of CE-CP-OFDM signals with DCM (L=3) . 58 4.16 Power spectral density of CE-ZP-OFDM signals with DCM (L=1) . 59 4.17 Power spectral density of CE-ZP-OFDM signals with DCM (L=2) . 60 4.18 Power spectral density of CE-ZP-OFDM signals with DCM (L=3) . 60 4.19 Fractional out-of-band power characteristics of CE-CP-OFDM with DCM and CE-ZP-OFDM with DCM (N=64, L=1) . . . . . . . . . 61 List of Tables 3.1 The correlation between system parameters and average or mini- mum CIR of CE-CP-OFDM . . . . . . . . . . . . . . . . . . . . . . 33 3.2 The correlation between system parameters and average or mini- mum CIR of CE-ZP-OFDM . . . . . . . . . . . . . . . . . . . . . . 34 4.1 The correlation between system parameters and average or mini- mum CIR of CE-CP-OFDM with DCM . . . . . . . . . . . . . . . . 62 4.2 The correlation between system parameters and average or mini- mum CIR of CE-ZP-OFDM with DCM . . . . . . . . . . . . . . . . 63 | |
| dc.language.iso | en | |
| dc.subject | 訊號共軛法 | zh_TW |
| dc.subject | 相關性編碼正交分頻多工系統 | zh_TW |
| dc.subject | 次載波間相互干擾 | zh_TW |
| dc.subject | 載波干擾比 | zh_TW |
| dc.subject | carrier-to-intercarrier power ratio | en |
| dc.subject | data-conjugate method | en |
| dc.subject | Correlatively Coded OFDM | en |
| dc.subject | Intercarrier Interference | en |
| dc.title | 相關性編碼正交分頻多工系統之次載波間相互干擾之研究 | zh_TW |
| dc.title | Intercarrier Interference of Correlatively Coded OFDM | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 闕志達,韓永祥,林大衛 | |
| dc.subject.keyword | 相關性編碼正交分頻多工系統,次載波間相互干擾,載波干擾比,訊號共軛法, | zh_TW |
| dc.subject.keyword | Correlatively Coded OFDM,Intercarrier Interference,carrier-to-intercarrier power ratio,data-conjugate method, | en |
| dc.relation.page | 68 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-07-12 | |
| 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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