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姓名 闕宜昕(Yi-i Chueh) 查詢紙本館藏 畢業系所 通訊工程學系 論文名稱 於時間相關通道下有限回授線性編碼MIMO-OFDM 系統之回授資訊量降低方法
(Feedback CSI Reduction Method for Limit FeedbackPrecoding MIMO-OFDM Systems over TemporallyCorrelated Channels )相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 當傳送端只有一個傳送資料序列時,將有限回授預編碼技術結MIMO-OFDM 系統,可以提高系統的分集效能以降低系統錯誤率,若傳送端有多個傳送資料序列時,將有限回授預編碼技術結合MIMO-OFDM統,則可以提高頻譜使用效率增加資料傳送速度。而要使用預編碼技術則在傳送端需要知道通道狀態資訊,由於我們的系統為MIMO-OFDM統,所以我們必須回傳每個子載波的通道資訊給傳送端使用,對於整個回
授系統來說是極大的負擔,為了降低系統回授的資訊量,我們利用在相鄰OFDM symbol 中相同的頻率的子載波的通道頻域響應的相關性結合改良的球型內插法,從兩種不同的角度切入,化簡回授資訊量。由系統模擬結果可知,本論文提出降低回授資訊量的方法在不犧牲太多的效能的前提下,比起傳統降低回授資訊量的方法可以有效的降低回授資訊量。
摘要(英) The limited feedback Precoding scheme combining with the MIMO-OFDM system is a simple technique to exploit spatial diversity and improve bit error probability for one data stream transmission, or increase spectral efficiency and rise transmission data rate for multiple data stream transmission. However it requires feedback channel state information (CSI) at the transmitter for all subcarriers. We
use a codebook to reduce the feedback requirements, but this way still costs too much data rate due to the CSI feedback. To solve this problem, we propose a new feedback CSI reduction method. we calculate the correlation of channel frequency responses in the adjacent OFDM symbol for the same subcarrier to find the precoding matrix. Besides, the sphere interpolation method is utilized for the precoding matrix at the transmitter. Through the proposed method, we can successfully reduce the CSI feedback information with remaining similar bit error rate performance to the existing method.
關鍵字(中) ★ MIMO-OFDM
★ 回授資訊量降低方法
★ 有限回授
★ 線性編碼關鍵字(英) ★ MIMO-OFDM
★ CSI Reduction
★ Precoding論文目次 中文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . i
英文摘要. . . . . . . . . . . . . . . . . . . . . . . . . . ii
目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
圖目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . vii
表目錄. . . . . . . . . . . . . . . . . . . . . . . . . . . x
第1 章序論. . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 前言. . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 章節架構. . . . . . . . . . . . . . . . . . . . . . . . 3
第2 章線性預編碼MIMO-OFDM 系統介紹. . . . . . . . . . . . . 4
2.1 線性預編碼MIMO-OFDM 傳收系統. . . . . . . . . . . . . . 4
2.1.1 MIMO-OFDM 信號偵測器架構. . . . . . . . . . . . . . . 6
2.2 有限回授(Limited Feedback) 線性預編碼MIMO-OFDM 傳收
系統. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 建立Codebook . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2 Fourier-Based construction . . . . . . . . . . . . . . . . 12
2.3 多種最佳預編碼矩陣選擇方法(Optimal per-subcarrier multimode
precoding matrix selection criterion) . . . . . . . . . . . . . .15
2.4 Temporally-Correlated Channel model . . . . . . . . . . . . .19
第3 章降低預編碼回授資訊量for MIMO-OFDM System . . . . . . . . . 20
3.1 降低預編碼回授資訊量的方法. . . . . . . . . . . . . . . . . . 21
3.1.1 Clustering . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1.2 Reduction of Searching Range in Codebook . . . . . . . . . .23
3.1.3 Interpolation . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Proposed Interpolation combined Reduction of Searching Range
in Codebook . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
第4 章系統模擬與分析. . . . . . . . . . . . . . . . . . . . . . . 39
4.1 Simulation Environment . . . . . . . . . . . . . . . . . . . 39
4.2 系統參數模擬分析. . . . . . . . . . . . . . . . . . . . . . . 42
4.2.1 不同的ρ 值對系統影響模擬分析. . . . . . . . . . . . . . . 42
4.2.2 不同的Feedback bit 數對系統影響模擬分析. . . . . . 44
4.3 模擬結果. . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.4 回授資訊量的討論. . . . . . . . . . . . . . . . . . . . . . . 66
第5 章結論. . . . . . . . . . . . . . . . . . . . . . . 70
參考文獻. . . . . . . . . . . . . . . . . . . . . . . 71
參考文獻 [1] S. Alamouti, “A simple transmit diversity technique for wireless communications,”
IEEE J. Select. Areas Commun., vol. 16, no. 8, pp. 1451–1458,
Oct. 1998.
[2] V. Tarokh, H. Jafarkhani, and A. Calderbank,“Space-time block codes from
orthogonal designs,”IEEE Trans. Inf. Theory, vol. 45, no. 5, pp. 1456–1467,
Jul 1999.
[3] “Approved draft ieee standard for local and metropolitan area networks
corrigendum to ieee standard for local and metropolitan area networks-part
16: Air interface for fixed broadband wireless access systems (incorporated
into ieee std 802.16e-2005 and ieee std 802.16-2004/cor 1-2005 e),”IEEE
Std P802.16/Cor1/D5, 2005.
[4] H. Zhang, Y. Li, V. Stolpman, and N. van Waes, “A reduced csi feedback
approach for precoded mimo-ofdm systems,”IEEE Trans. Wireless Commun.,
vol. 6, no. 1, pp. 55–58, Jan. 2007.
[5] J. Choi and J. Heath, R.W., “Interpolation based transmit beamforming for
mimo-ofdm with limited feedback,”IEEE Trans. Signal Processing, vol. 53,
no. 11, pp. 4125–4135, Nov. 2005.
[6] D. Love and R. Heath, “Limited feedback unitary precoding for spatial multiplexing
systems,”IEEE Trans. Inf. Theory, vol. 51, no. 8, pp. 2967–2976,
Aug. 2005.
[7] Y. Cho, J. Kim, W. Yang, and C. Kang, MIMO-OFDM Wireless Communications
with MATLAB. John Wiley & Sons, 2010.
[8] D. Love, J. Heath, R.W., and T. Strohmer, “Grassmannian beamforming for
multiple-input multiple-output wireless systems,”IEEE Trans. Inf. Theory,
vol. 49, no. 10, pp. 2735–2747, Oct. 2003.
[9] A. Barg and D. Nogin, “Bounds on packings of spheres in the grassmann
manifold,”IEEE Trans. Inf. Theory, vol. 48, no. 9, pp. 2450–2454, Sep.
2002.
[10] B. Hochwald, T. Marzetta, T. Richardson, W. Sweldens, and R. Urbanke,
“Systematic design of unitary space-time constellations,”IEEE Trans. Inf.
Theory, vol. 46, no. 6, pp. 1962–1973, Sep 2000.
[11] D.J.Love.(2004). Tables of Comples Grassmannian Packings.[Online] http://
cobweb.ecn.purdue.edu/ djlove/grass.html.
[12] J. Heath, R.W., S. Sandhu, and A. Paulraj, “Antenna selection for spatial
multiplexing systems with linear receivers,”IEEE Commun. Letters, vol. 5,
no. 4, pp. 142–144, Apr. 2001.
[13] L.-Y. Chen, “Transmit beamforming with dual-mode limited feedback over
temporally-correlated channel,”2007.
[14] J. Choi, B. Mondal, and R. Heath, “Interpolation based unitary precoding
for spatial multiplexing mimo-ofdm with limited feedback,”IEEE Trans.
Signal Processing, vol. 54, no. 12, pp. 4730–4740, Dec. 2006.
[15] G. S. Watson, Statistucs on Spheres. New York : Wiley, 1983.
[16] T.-H. Hsu, “Precoder search and time domain csi feedback in mimo-ofdm
systems,”Jun. 2008.
[17] A. T. James, Distributions of Matrix Variates and Latent Roots Derived from
Normal Samples. Ann. Math. Statist. Volume 35, 475-501, 1964.
[18] D. Love, J. Heath, R.W., and T. Strohmer, “Grassmannian beamforming for
multiple-input multiple-output wireless systems,”in proc. IEEE Int. Commun.,
2003. ICC '03., vol. 4, May 2003, pp. 2618–2622.
指導教授 張大中(Dah-chung Chang) 審核日期 2011-8-18 推文 plurk
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