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研究生:楊庭瑋
研究生(外文):TING-WEI YANG
論文名稱:MU-MIMO系統結合ZF-SVD等化器之OFDMA影像傳輸系統之跨層資源分配
論文名稱(外文):MU-MIMO system combine ZF-SVD equalizer for Cross-Layer Resource Allocation of OFDMA Video Transmission
指導教授:曾恕銘
口試委員:張立中曾德峰陳永芳曾恕銘
口試日期:2017-07-21
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電子工程系研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
畢業學年度:105
中文關鍵詞:正交分頻多重存取無線功率分配奇異值分解(SVD)資源分配多使用者多輸入多輸出
外文關鍵詞:OFDMAsingular value decomposition (SVD)resource allocationmultiuser multiple-input multiple-output (MU-MIMO)
相關次數:
  • 被引用被引用:0
  • 點閱點閱:154
  • 評分評分:
  • 下載下載:6
  • 收藏至我的研究室書目清單書目收藏:0
參考之前文獻Dawei Wang提出的論文,在OFDMA上行影像傳輸系統中作跨層資源分配的架構當基礎,這篇論文為考慮一個MIMO的正交分頻多工系統,使用者傳送影像資訊,同時受到其他用戶的干擾,並且試著重新分配功率與頻譜的資源給使用者,為了降低干擾、提高PSNR,提出結合SVD的MIMO資源分配方式;干擾消除部份,我們利用SVD演算法來估測傳輸通道及預編碼矩陣,進而還原所傳送的訊號。模擬結果顯示,結合SVD的MIMO資源分配方式,在低SNR時,多個使用者的情況下,PSNR會比單純ZF好約2-4dB。經本論文所結合的干擾消除機制與資源分配後,可對抗多使用者間的干擾及提升傳輸影像品質。
Based on the Dawei Wangs paper, in the OFDMA uplink image transmission system for cross-layer resource allocation architecture when the basis of this paper to consider the users to send video information in a MIMO orthogonal frequency division system, while which is subject to the interference of other users and try to re-allocate power and spectrum of resources to the user. In order to reduce interference and improve PSNR, we put forward the combination of SVD (singular value decomposition) and ZF(zero-forcing) algorithm of MIMO resource allocation; in the part of interference elimination, we use ZF-SVD algorithm to estimate the transmission channel and precoding matrix and thereby return to the original signal. The simulation results show that, in the case of low SNR, the PSNR is about 2-4dB better than the ZF case in the case of multiple users. The interference elimination mechanism and resource allocation combined with this paper can be used to deal with the interference between multi-users and enhance the transmission image quality.
目錄
摘 要 i
ABSTRACT ii
誌謝 iv
第一章 緒論 1
第二章 系統模型 2
2.1 OFDMA上行影像傳輸系統 2
2.2 干擾消除機制 3
2.3 影像失真率模型 5
第三章 資源分配演算法 7
3.1 初始化設定 7
3.2 注水式功率分配與斜率計算 7
3.3 子載波重新分配 8
第四章 模擬結果 10
第五章 結論 13
參考文獻 14
[1] C. Y. Wong, R. Cheng, K. Lataief, and R. Murch, “Multiuser OFDM with adaptive subcarrier, bit, and power allocation,” IEEE J. Sel. Areas Commun., vol. 17, no. 10, pp. 1747–1758, Oct. 1999.
[2] W. C. Pao and Y. F. Chen, “Adaptive Gradient-Based Methods for Adaptive Power Allocation in OFDM-Based Cognitive Radio Networks,” IEEE Transactions on Vehicular Technology, vol. 63, no. 2, pp. 836-848, July, 2014.
[3] I. C. Wong and B. L. Evans, “Optimal resource allocation in the OFDMA downlink with imperfect channel knowledge,” IEEE Transactions on Communications, vol. 57, no. 1, pp. 232-241, January, 2009.
[4] Z. Wang, L. Liu, X. Wang and J. Zhang, “Resource Allocation in OFDMA Networks with Imperfect Channel State Information,” IEEE Communications Letters, vol. 18, no. 9, pp. 1611-1614, July, 2014.
[5] G. Cook, J. Prades-Nebot, Y. Liu and E. Delp, “Rate-distortion analysis of motion-compensated rate scalable video,” IEEE Transactions on Image Processing, vol. 15, no. 8, pp. 2170-2190, August, 2006.
[6] Z. Chen and K. N. Ngan, “Recent advances in rate control for video coding,” Signal Processing: Image Communication, vol. 22, no. 1, pp. 19-38, January, 2007.
[7] D. Wang, L. Toni, P. C. Cosman and L. B. Milstein,” Uplink Resource Management for Multiuser OFDM Video Transmission Systems: Analysis and Algorithm Design,” IEEE Transactions on Communications, vol. 61, no. 5, pp. 2060-2073, March, 2013.
[8] D. Tse and P. Viswanath, Fundamentals of Wireless Communication. New York, NY, USA: Cambridge University Press, 2005.
[9] D. Gesbert, M. Kountouris, R. W. Heath, C.-B. Chae, and T. Sälzer, “Shifting the MIMO paradigm - from single-user to multiuser communications,” IEEE Signal Proc. Mag., no. 9, pp. 36–46, 2007.
[10] D. Wang, C. Ji, X. Gao, S. Sun, and X. You, “Uplink sum-rate analysis of multi-cell multi-user massive MIMO system,” in Proc. IEEE Int. Conf. on Commun. (ICC), Jun. 2013, pp. 5404–5408.
[11] H. Li, “On the performance of multicell MU-MIMO uplink transmission scheme based on SVD,” in 2nd Int Conf on Future Computer and Communication (ICFCC), vol. 2, 2010, pp. V2–183–V2–186.
[12] Aasem N. Alyahya and Jacek Ilow, “Zero-Forcing Assisted Spatial Stream Allocation in Uplink Multiuser MIMO Systems,” IEEE 28th Canadian Conference on Electrical and Computer Engineering Halifax,, pp.1030-1035, May. 2015.
[13] W. Liu, L. L. Yang, and L. Hanzo, “SVD-assisted multiuser transmitter and multiuser detector design for MIMO systems,” IEEE Trans. Vehicular Technol., vol. 58, no. 2, pp. 1016–1021, 2009.
[14] Shaoshi Yang, Lajos Hanzo, “Fifty Years of MIMO Detection: The Road to Large-Scale MIMOs,” IEEE communication surveys & tutorials, vol. 17, no. 4, pp.1941-1988, FOURTH QUARTER 2015
[15] A. Goldsmith, Wireless Communications. Cambridge, 2005.
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