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博碩士論文 etd-0808115-145644 詳細資訊
Title page for etd-0808115-145644
論文名稱
Title
多輸入多輸出下鍊系統之最大總傳輸率預編碼設計
Maximum Sum Rate Precoding design for MIMO Downlink Systems
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
28
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2015-07-30
繳交日期
Date of Submission
2015-09-08
關鍵字
Keywords
預編碼、完美通道資訊、收斂、訊號與干擾雜訊比、總傳輸率
transmission rate, Convergence, perfect CSI, signal-to-interference-plus-noise ratio, precoding
統計
Statistics
本論文已被瀏覽 5656 次,被下載 726
The thesis/dissertation has been browsed 5656 times, has been downloaded 726 times.
中文摘要
此篇論文的系統架構為多使用者多重輸入多重輸出系統(MU-MIMO),主要討論在完美通道資訊的情形下,基地台設計預編碼向量使多重輸入多重輸出系統的傳輸率達到最大值,而在使用者端設計解碼向量解碼基地台傳送的訊息。在完美通道的情形下,在計算總傳輸率的過程中,由於使用者的解碼向量包含預編碼向量,因此在預編碼向量的設計,我們會使用反覆的演算法。在每個不同的條件下,我們會由隨機產生的通道去設定一組初始的預編碼向量,使用反覆演算法使訊號與干擾雜訊比(signal-to-interference-plus-noise ratio ,SINR)達到收斂,此時傳輸率即會達到最大值。在模擬結果中,我們會分析基地台天線數和使用者天線數,以及使用者個數不同時,觀察整個系統的總傳輸率有何變化,而在使用者個數增加時,整個系統的總傳輸率會有顯著的增加。而在通道資訊有誤差的情形下,我們會把估測誤差的變異數作調整,觀察它的變化,也把估測誤差的情形和完美通道的情形作比較。
Abstract
The system architecture of the paper is multi-user multiple-input multiple-output system, and the main discussion in the case of perfect channel information, we design precoding vectors which make transmission rate maximum in multi-user multiple-input multiple-output system in the base station, and we design decoding vector which decode base station transmission message in the user-side. In the process of the calculation of the total transmission rate in a perfect CSI, since the decoding vectors of the users contain the pre-coding vector, we will use iterative algorithms in the precoding vector design. In each of the different conditions, we will randomly generate channels which set an initial set of pre-encoding vector, and using iterative algorithm which makes signal-to-interference-plus-noise ratio reaches convergence, and transfer rate reach the maximum in this time. In the simulation results, we analyze the difference of the number of base station antenna and user antenna, and the number of user, and observe the changes of the total transmission rate in the whole system, and the number of user increases, the total transmission rate will be obviously increased. While in the case of erroneous information channel, we will adjust the variance of the estimation error, and observe its changes, but also compare the perfect channel and the channel of estimation error.
目次 Table of Contents
論文審定書 i
致謝 ii
中文摘要 iii
英文摘要 iv
第一章 : 簡介 1
第二章 : 文獻探討 4
2.1 訊號與洩漏雜訊比(SLNR) 4
2.2 迫零(ZF) 6
第三章 : 系統模型 7
第四章: 預編碼向量設計 9
第五章 : 模擬結果 14
第六章 : 結論 20
文獻探討 21
參考文獻 References
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[3] L. Choi and R. Murch, “A transmit preprocessing technique for multiuser MIMO systems using a decomposition approach,” IEEE Transactions on Wireless
Communications, vol. 3, no. 1, pp. 20–24, 2004.
[4] A. Bourdoux and N. Khaled, “Joint TX-RX optimisation for MIMOSDMA
based on a-space constraint,” in 2002 IEEE 56th Vehicular Technology Conference, VTC Fall 2002.
[5] Z. Pan, K. Wong, and T. Ng, “Generalized multiuser orthogonal spacedivision
multiplexing,” IEEE Transactions on Wireless Communications, vol. 3, no. 6, pp. 1969–1973, 2004.
[6] Z. Zhou, W. Hardjawana, and B. Vucetic, “Iterative Multiple Beamforming
Algorithm for MIMO Broadcast Channels,” IEEE communications letters, vol. 12, no. 10, pp. 743–745, 2008.
[7] J. Zhang, Y. Wu, S. Zhou, and J. Wang, “Joint linear transmitter and receiver design for the downlink of multiuser MIMO systems,” IEEE communications letters, vol. 9, no. 11, pp. 991–993, 2005.
[8] A. Tenenbaum and R. Adve, “Joint multiuser transmit-receive optimization
using linear processing,” in Proc. IEEE Int. Conf. Commun, 2004, pp. 588–592.
[9] V. Stankovic and M. Haardt, “Generalized design of multi-user MIMO precoding matrices,” IEEE Transactions on Wireless Communications, vol. 7, no. 3, pp. 953–961, 2008.
[10] M. Sadek, A. Tarighat, and A. Sayed, “A leakage-based precoding scheme for downlink multi-user MIMO channels,” IEEE transactions on Wireless
Communications, vol. 6, no. 5, pp. 1711–1721, 2007.
[11] J. Zhang, Y. Wu, M. Xu, and J. Wang, “Linear transmitter precoding design for downlink of multiuser MIMO systems,” Electronics Letters, vol. 41, no. 14, pp. 811–813, 2005.
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