| 研究生: |
黃文昱 Wen-Yu Huang |
|---|---|
| 論文名稱: |
高速移動環境下OFDM系統載波間干擾減抑改進之FPGA設計與實現 Design and FPGA Implementation of An Improved Inter-Carrier Interference Mitigation Scheme for OFDM Systems in High-Mobility Environment |
| 指導教授: |
陳逸民
Yih-Min Chen |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
資訊電機學院 - 通訊工程學系 Department of Communication Engineering |
| 畢業學年度: | 98 |
| 語文別: | 中文 |
| 論文頁數: | 97 |
| 中文關鍵詞: | 正交分頻多工系統 、高速移動 、載波間干擾 |
| 外文關鍵詞: | OFDM, High-mobility, ICI |
| 相關次數: | 點閱:10 下載:0 |
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在高速移動環境下,正交分頻多工系統的效能受限於載波間干擾,且隨著移動速度上升,載波間干擾的現象愈嚴重。為了克服高速移動環境下引起的載波間干擾,本論文提出基於最大近似法則的演算法改進載波間干擾減抑。本論文以DVB-T系統為例,最後在FPGA上實現本論文提出的演算法。
In high-mobility environment, the performance of wireless OFDM communication systems is limited by inter-carrier-interference (ICI) phenomenon and ICI effect is more serious with higher velocity of receiver. To overcome ICI which is caused by the high mobility, in this thesis we present an improved ICI mitigation scheme based on maximum-likelihood criterion. We take DVB-T system for example and finally implement the algorithm we propose with FPGA.
[1] ETSI EN 300 744, Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television, European Standard.
[2] MOTIVATE report to the 36th DVB-T Meeting (2000-01) Using DVB-T Standard to Deliver Broadcast Services to Mobile Receiver.
[3] W. C. Jakes’. “Microwave Mobile Communications” [M]. IEEE Press, Wiley Interscience, 1994.
[4] Y. Mostofi and D. Cox, “ICI Mitigation for Pilot-Aided OFDM Systems”, IEEE Transactions on Wireless Communications, vol. 4,no. 2, pp. 765-774, March 2005.
[5] S. Chen, W. He, H. Chen and Y. Lee, “Mode Dectection, Synchronization, and Channel Estimation for DVB-T OFDM Receiver,” GLOBECOM ''03. IEEE, vol. 5, pp.2416-2420, Dec. 2003.
[6] Volker Fischer, Alexander Kurpiers and Dominik Karsunke, ”ICI Reduction Method for OFDM Systems”, 8th International OFDM-Workshop 2003 (InOWo''03), Hamburg, Conference Proceedings.
[7] Karsten Schmidt, Christian Gunter and Albrecht Rothermel, “Improving the Mobility of DVB Handheld Devices with Inter-Carrier Interference Compensation”, Consumer Electronics, 2004 IEEE International Symposium on Sept. 1-3, 2004.
[8] Pao-Chen Shih, “Channel Estimation and Equalization for DVB-T in High-Mobility Environment”, National Central University Thesis, July 2007.
[9] Shu-Yu Chen, “Inter-Carrier Interference Cancellation of DVB-T System in High-Mobility Environment”, National Central University Thesis, July 2009.
[10] Ray Andraka, “A survey of CORDIC algorithms for FPGA based computers”, 1998 ACM/SIGDA Sixth International Symposium on Field Programmable Gate Arrays, 191-200, 1998.