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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 馮世邁(See-May Phoong) | |
dc.contributor.author | Wei-Ju Chiang | en |
dc.contributor.author | 江威儒 | zh_TW |
dc.date.accessioned | 2021-05-20T20:59:58Z | - |
dc.date.available | 2013-08-01 | |
dc.date.available | 2021-05-20T20:59:58Z | - |
dc.date.copyright | 2011-08-01 | |
dc.date.issued | 2011 | |
dc.date.submitted | 2011-07-22 | |
dc.identifier.citation | [1] European Telecommunication Standards Institude, 'Digital audio broadcasting (DAB) to mobile protable and xed receiverd,' EST 300 401, 1994.
[2] European Telecommunication Standards Institude, 'Digital vedio broadcasting; framing, structure, channel coding and modulation for digital terrestrial television (DVB-T),' EST 300 744, 1997. [3] L. Der and B. Razavi, 'A 2-GHz CMOS image-reject receiver with LMS calibration,' IEEE J. Solid-State Circuits, vol. 38, no. 2, pp. 167-175, February 2003. [4] Z. Pengfei, N. Thai, C. Lam, D. Gambetta, C. Soorapanth, C. Baohong, S. Hart, I. Sever, T. Bourdi, A. Tham, and B. Razavi, 'A direct conversion CMOS transceiver for IEEE 802.11a WLANs,' in IEEE Int. Solid-State Circuits Conf. Dig Technical papers, February 2003. [5] Darryl Dexu Lin, Ryan A. Pacheco, Teng Joon Lim, and Dimitrios Hatzinakos, 'Joint estimation of channel response, frequency o set, and phase noise in OFDM,' IEEE Transactions on Signal Processing, vol. 54, no. 9, September 2006. [6] Qiyue Zou, Alireza Tarighat, and Ali H. Sayed, 'Compensation of phase noise in OFDM wireless systems,' IEEE Transactions on Signal Processing, vol. 55, no. 11, November 2007. [7] Songping Wu, and Yeheskel Bar-Ness, 'OFDM channel estimation in the presence of frequency o set and phase noise,' IEEE International Conference on Communications, vol. 5, pp. 3366-3370, May 2003. [8] B. Razavi, RF Microelectronics. Englewood Cli s, NJ: Prentice-Hall, 1998. [9] Yuan-Pei Lin and See-May Phoong, 'BER minimized OFDM systems with channelindependent precoders,' , volume 51, issue 9, pp. 2369-2380, September 2003. [10] Li-Hsiang Lee, 'Performance Study of OFDM and SC-CP Systems in Nonideal Transmission Environment,' Master thesis, National Taiwan University, June 2005. [11] M. J. M. Pelgrom, A. C. J. Duinmaijer, and A. P. G. Welbers, 'Matching properties of MOS transistors,' IEEE J. Solid-State Circuits, vol. 24, no. 5, pp. 1433-1439, October 1989. [12] Guanbin Xing, Manyuan Shen, and Hui Liu, 'Frequency O set and I/Q Imbalance Compensation for Direct-Conversion Receivers,' IEEE Transactions on Wireless Communication, vol. 4, no. 2, March 2005. [13] Hai Lin, Xu Zhu, and Katsumi Yamashita, 'Low-Complexity Pilot-Aided Compensation for Carrier Frequency O set and I/Q imbalance,' IEEE Transactions on Communications, vol. 58, no. 2, February 2010. [14] Ying Chen, Jian(Andrew) Zhang, and A.D.S.Jayalath, 'Low-Complexity Estimation of CFO and Frequency Independent I/Q Mismatch for OFDM systems,' EURASIP Journal on Wirless Communications and Networking, Volume 2009. [15] Yuan-Hwui Chung, 'Estimation and Compensation of Front-end Nonidealities in OFDM Systems,' Doctoral Dissertation, National Taiwan University, July, 2009. [16] Balachander Narasimhan, Sudharsan Narayanan, Hlaing Minn, Naofal Al-Dhahir, 'Reduced-Complexity Baseband Compensation of Joint Tx/Rx I/Q Imbalance in Mobile MIMO-OFDM,' IEEE Transactions on Wireless Communication, vol. 9, no. 5, May 2010. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/10073 | - |
dc.description.abstract | Nowadays, direct-conversion radio frequency (RF) receivers become more appealing. However, orthogonal frequency division multiplexing (OFDM) systems with direct-conversion RF receivers are very sensitive to non-idealities at the front-end of receiver, such as I/Q imbalance and carrier frequency o set (CFO). These nonidealities at the receiver result in inter-carrier interference (ICI). Accurate estimates of the non-idealities and channel response are required in OFDM systems. In this thesis, the e ects of I/Q imbalance and CFO on OFDM systems are studied, and the estimation of these parameters is considered. To solve the problems, we propose a time domain method for joint estimation of I/Q imbalance and CFO as well as channel response. The proposed method requires only two OFDM training blocks as a preamble to accomplish joint estimation. Moreover, we do not put any restrictions on the preamble signal and thus the proposed method can be adopted in any communication systems with a preamble. It is shown by simulation results that our proposed method performs well for any channels as long as their order is not longer than cyclic prefix (CP). | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T20:59:58Z (GMT). No. of bitstreams: 1 ntu-100-R98942111-1.pdf: 1044410 bytes, checksum: 8f7bfbcf55de20226dd62e1a463a9586 (MD5) Previous issue date: 2011 | en |
dc.description.tableofcontents | Abstract ix
Acknowledgements xi 1 Introduction 1 2 I/Q Imbalance and Carrier Frequency Oset in OFDM Systems 5 2.1 Introduction to OFDM Systems 6 2.2 The Phenomenon of I/Q Imbalance and CFO 10 2.2.1 I/Q Imbalance 12 2.2.2 Carrier Frequency oset 12 2.3 I/Q Imbalance and CFO on the Received Baseband Signal Model 13 2.4 Compensation of I/Q Imbalance and CFO 16 2.5 Simulation Result and Comparison 18 2.6 Concluding Remark 22 3 Estimation and Compensation of CFO and I/Q imbalance 23 3.1 Pilot Aided Compensation for CFO and I/Q Imbalance by GPP method 24 3.2 CFO Estimation by Three-Block method 27 3.3 Simulation Results 30 3.4 Concluding Remark 34 4 Joint Estimation of I/Q Imbalance and CFO for OFDM system 35 4.1 Proposed Joint Estimation Method of CFO and I/Q Imbalance 36 4.1.1 CFO Estimation 37 4.1.2 I/Q Imbalance Estimation 40 4.2 Improved of GPP Method 42 4.3 Improved of Three-Block method 44 4.4 Simulation Results and Comparison 47 4.5 Concluding Remark 57 5 Conclusion 59 Bibliography 61 List of Figures 2.1 Block diagram of OFDM system 7 2.2 Idea direct-conversion receiver 11 2.3 Arithmetic model for DCR with I/Q imbalance and CFO 13 2.4 A block diagram of OFDM with I/Q imbalance and CFO 15 2.5 compensation structure for I/Q imbalance and CFO proposed in [12] 17 2.6 Example 2.1. Effect of I/Q imbalance on BER performance of OFDM systems 20 2.7 Example 2.2. Effect of CFO on BER performance of OFDM systems 21 2.8 Example 2.3. Joint eect of CFO and I/Q imbalance on BER performance of OFDM systems 22 3.1 Generalized periodic pilot 24 3.2 compensation structure for I/Q imbalance and CFO 25 3.3 Training sequences of Three-Block method 28 3.4 y = arcos(x) 30 3.5 Example 3.1. MSE for the estimation of versus different CFO parameter 32 3.6 Example 3.1. MSE for the estimation of compensation parameter versus different CFO parameter 33 3.7 Example 3.2. MSE for the estimation of versus different CFO parameter 34 4.1 Training sequence of proposed method 37 4.2 The data flow diagram for proposed joint estimation of CFO and I/Q imbalance in Sec.4.1 42 4.3 The data flow diagram for Improved of CFO Estimation by Using Three Repeated OFDM Blocks in Sec.4.3 46 4.4 Example 4.1. MSE for the estimation of CFO versus SNR ( = 0:3072) 48 4.5 Example 4.1. MSE for the estimation of versus different CFO parameter 49 4.6 Example 4.2. MSE for the estimation of CFO versus SNR ( = 0:02) 50 4.7 Example 4.2. MSE for the estimation of CFO versus SNR ( = 0:2) 50 4.8 Example 4.2. MSE for the estimation of versus different CFO parameter 51 4.9 Example 4.3. MSE for the estimation of CFO versus SNR ( = 0:02) 52 4.10 Example 4.3. MSE for the estimation of CFO versus SNR ( = 0:2) 52 4.11 Example 4.3. MSE for the estimation of versus different CFO parameter 53 4.12 Example 4.4. MSE for the estimation of CFO versus SNR ( = 0:2) 54 4.13 Example 4.4. MSE for the estimation of versus dierent CFO parameter 55 4.14 Example 4.5. MSE for the estimation of CFO versus SNR ( = 0:3072) 56 4.15 Example 4.5. MSE for the estimation of versus different CFO parameter 56 | |
dc.language.iso | en | |
dc.title | 正交分頻多工系統鐘實虛部非協調與載波頻率位移之同估測 | zh_TW |
dc.title | Joint estimation of I/Q imbalance and carrier frequency offset for OFDM systems | en |
dc.type | Thesis | |
dc.date.schoolyear | 99-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 蘇炫榮,蘇柏青,鐘元暉 | |
dc.subject.keyword | 正交分頻多工系統,實虛部非協調,載波頻率位移, | zh_TW |
dc.subject.keyword | OFDM,I/Q imbalance,CFO, | en |
dc.relation.page | 63 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2011-07-22 | |
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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