簡易檢索 / 詳目顯示
| 研究生： |
洪莉喬 Li-Chiao Hung |
|---|---|
| 論文名稱： |
使用位置資訊之干擾消除及空間群集技術 探討 Location-based Interference Mitigation and Spatial Grouping Techniques for Hetnet |
| 指導教授： |
陳永芳
Yung-Fang 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 |
| 論文出版年： | 2013 |
| 畢業學年度： | 101 |
| 語文別： | 英文 |
| 論文頁數： | 54 |
| 中文關鍵詞： | 家庭基站 、異質網路 、到達角度 、波束形成 、群集 |
| 外文關鍵詞： | Femtocell, heterogeneous networks, angle of arrival, beamforming, grouping |
| 相關次數： | 點閱：13 下載：0 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
此篇論文提供一個,在有干擾信號的異質網路正交分頻多重接取系統下到達角度的波束成型設計,此方法不需要估測通道參數資訊,也不需要每一根子載波都計算一次波束權重.此方法主要是以特徵分解的方式來建構信號空間給估測角度演算法來偵測角度，使用此法可以減低家庭基站與後端網路連接的過度附載或是延遲.
在估算出接收到的角度後,可使用群集的方法來消除接收端使用者同頻的干擾.群集的概念一開始是在文獻[1]中提出,此篇文獻假設使用者只有單一角度,且在接收端有多用戶偵測器.然而這些假設並不合理,所以我們提出另一種,在沒有多用戶偵測器並考慮多重路徑下的群集方法.
最後電腦模擬分析,將會顯示提出方法是有效的.
In this thesis, we proposed an angle of arrival (AOA) based beamforming structure for orthogonal frequency division multiple access (OFDMA)-based Hetnet systems. The proposed scheme has interference resistant capability without the needs in the estimation of the channel parameters and the calculation of beamforming weight vector for each subcarrier in OFDM-based systems. It can also reduce extra burden and delay generated from communication link between the femtocell and the central entity for using beamforming technology. Then, one can also use the obtained AOAs at receivers to group users to reduce the co-channel interference (CCI) among users. The grouping concept appears in [1] which requires a multi-user detection device at the receiver and ignores the influence of multipaths. However, the multi-user detection device may not exist in the receiver and some multipath might cause serious interference effect. In this thesis, another grouping idea is proposed to aim at minimizing the CCI by considering the multipath impact and without multiuser detection device. The simulation results are presented to demonstrate the efficacy of the proposed algorithms.
[1] Y. J. Zhang and K. B. Letaief, "An efficient resource-allocation scheme for spatial multiuser access in MIMO/OFDM systems," IEEE Trans.Commun, vol. 53, pp. 107-116, 2005.
[2] D. Astély, E. Dahlman, A. Furuskar, Y. Jading, M. Lindstrom, and S. Parkvall, "LTE: the evolution of mobile broadband," IEEE Commun. Mag., pp 44-51, 2009.
[3] A. Ghosh, R. Ratasuk, B. Mondal, N. Mangalvedhe, and T. Thomas, "LTE-advanced: next-generation wireless broadband technology," IEEE Trans. Wireless Commun., vol. 17, pp. 10-22, 2010.
[4] I. F. Akyildiz, D. M. Gutierrez-Estevez, and E. C. Reyes, "The evolution to 4G cellular systems: LTE-Advanced," J. Physical Commun., vol. 3, pp. 217-244, 2010.
[5] V. Chandrasekhar, J. Andrews, and A. Gatherer, "Femtocell networks: a survey," IEEE Commun.Mag., vol. 46, pp. 59-67, 2008.
[6] T. Zahir, K. Arshad, A. Nakata, and K. Moessner, "Interference Management in Femtocells," IEEE Commun. Surveys and Tutorials, vol.15, 2012.
[7] G. De La Roche, A. Valcarce, D. López-Pérez, and J. Zhang, "Access control mechanisms for femtocells," IEEE Commun.Mag., vol. 48, pp. 33-39, 2010.
[8] C. Eklund, R. B. Marks, K. L. Stanwood, and S. Wang, "IEEE standard 802.16: a technical overview of the WirelessMAN/sup TM/air interface for broadband wireless access," IEEE Commun.Mag., vol. 40, pp. 98-107, 2002.
[9] P. Channels, "Modulation (Release 8), " 3GPP TSG-RAN TS 36.211, v8. 4.0, Tech.Rep, Sep. 2008.
[10]S. Huan, K. Linling, and L. Jianhua, "Interference avoidance in OFDMA-based femtocell network," in Proc. IEEE Youth Conf. on Information, Computing, and Telecomm., pp.126-129, Sept. 2009.
[11]V. Chandrasekhar, J. G. Andrews, T. Muharemovic, Z. Shen, and A. Gatherer, "Power control in two-tier femtocell networks," IEEE Trans. Wireless Commun., vol. 8, pp. 4316-4328, 2009.
[12] A. K. Elhakeem, R. Di Girolamo, I. B. Bdira, and M. Talla, "Delay and throughput characteristics of TH, CDMA, TDMA, and hybrid networks for multipath faded data transmission channels," IEEE J. Sel. Areas Commun., vol. 12, pp. 622-637, 1994.
[13] X. Li, L. Qian, and D. Kataria, "Downlink power control in co-channel macrocell femtocell overlay," in Proc. IEEE 43rd CISS, pp. 383-388, 2009.
[14] M. Costa, "Writing on dirty paper," IEEE Trans. Inf. Theory, vol. 29, pp. 439-441, 1983.
[15] T. Yoo and A. Goldsmith, "On the optimality of multiantenna broadcast scheduling using zero-forcing beamforming," IEEE J. Sel. Areas Commun., vol. 24, pp. 528-541, 2006.
[16] M. Joham, W. Utschick, and J. A. Nossek, "Linear transmit processing in MIMO communications systems," IEEE Trans. Signal Processing, vol. 53, pp. 2700-2712, 2005.
[17] S. Kapoor, D. J. Marchok, and Y.-F. Huang, "Adaptive interference suppression in multiuser wireless OFDM systems using antenna arrays," IEEE Trans. Signal Processing, vol. 47, pp. 3381-3391, 1999.
[18] M. Haardt and J. A. Nossek, "Unitary ESPRIT: How to obtain increased estimation accuracy with a reduced computational burden," IEEE Trans. Signal Processing, vol. 43, pp. 1232-1242, 1995.
[19] R. Roy and T. Kailath, "ESPRIT-estimation of signal parameters via rotational invariance techniques," IEEE Trans. Acoust., Speech, Signal Processing, vol. 37, pp. 984-995, 1989.
[20] 3GPP, "E-UTRA: FDD Home eNode B (HeNB) Radio Frequency (RF) requirements," Tech. Rep.36.921,V10.0 ,2010.
[21] Y.-F. Chen and S.-S. Chi, "A RAKE receiver design for WCDMA FDD uplink with an RLS-based adaptive beamforming scheme," IEEE Trans. Veh. Technol., vol. 54, pp. 508-515, 2005.
[22] M. Wax and T. Kailath, "Detection of signals by information theoretic criteria," IEEE Trans. Acoust., Speech, Signal Processing, vol. 33, pp. 387-392, 1985.
[23] E. UMTS, "Selection procedures for the choice of radio transmission
technologies of the UMTS," Tech. Rep.101 112, V3. 2.0, 1998.
[24] U. Sorger, I. De Broeck, and M. Schnell, "Interleaved FDMA-a new spread-spectrum multiple-access scheme," in Proc. IEEE Int. Conf. on Commun., 1998, pp. 1013-1017.
[25] 3GPP, "E-UTRA: Further advancements for E-UTRA physical layer aspects (Release 9)," Tech. Rep.36.814, V9.0, 2010.
