應用於多用戶雙向中繼網路之聯合預編碼器及訊號對齊與天線選擇研究

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姓名

王志成(Chih-Cheng Wang) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

應用於多用戶雙向中繼網路之聯合預編碼器及訊號對齊與天線選擇研究
(Joint Design of Signal Alignment, Precoder and Antenna Selection in Multiuser Two-Way Relay Networks)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

多天線中繼通訊對於下世代無線通訊網路在數據傳輸速率、細胞覆蓋範圍及頻譜使用效率上的改善皆有很大幫助，不同於先前研究大部分著重於使用中繼基地台協助發射端與接收端通訊達到通訊品質或覆蓋範圍的提升，本研究由干擾抑制與管理角度研究中繼網路對於下世代單細胞及多細胞網路的影響及所能帶來的效能改善。
由於現今探討此多用戶雙向中繼網路之文獻大多著重於上行通訊(Uplink Communication)之系統設計，於下行廣播通訊(Downlink Broadcasting Communication)並未多做探討。於本研究中，我們也將針對此多用戶雙向中繼網路之下行通訊設計一系列之廣播策略，透過方塊對角化(Block Diagonalization)廣播巧並且搭配本研究提出之一多用戶廣播用戶接收天線選取技術(Receive Antenna Selection Method)協同設計。
在本篇論文中，我們探討一應用於多用戶(Multiuser)雙向中繼網路(Two-Way Relay Network)之聯合預編碼器設計(Joint Design with Transmit Precoder)與訊號對齊空間選擇機制(Signal Alignment Space Selection Method)，為此系統上行通訊(Uplink Communication)與下行廣播通訊(Downlink Broadcasting Communication)提供一有效率之訊息傳遞方法。本研究包含設計用戶預編碼器、轉遞預編碼器與訊號對齊空間設計等，以抑制干擾與最大化系統資訊傳輸率為主要探討目標，並探討多用戶中繼網路系統干擾訊號與系統效能之影響。

摘要(英)

Attracted by the benefits of multi-antenna relaying for next generation wireless communication in enhancing the system capacity, cellular coverage and spectral efficiency. While the previous schemes are propose on the transmitter and receiver cooperate design between base station and user nodes which achieves better performance, our research focus on developing the interference rejection and management technique for next generation cellular relay networks. For many research only focuses on the scheme of uplink communication, the downlink broadcasting transmission is rare to seen. In our study, we proposed a jointly design rules of uplink and downlink transmission technique for multi-user tow-way relay network through the block diagonalization broadcasting method joint with our propose multi-user receive antenna selection method. In this research, we consider an application jointly design the transmit precoder and signal alignment space selection for multi-user two-way relay network, provide an efficient data transmission method. The main contribution of this research is to provide a series of design rules including the user transmit precoder design, relay broadcasting beamforming weight design and the signal alignment space selection based on interference management and achievable sum-rate maximization for multi-user relay networks.

關鍵字(中)

★ 雙向中繼網路
★ 訊號空間對齊
★ 干擾對齊
★ 方塊對角化預編碼器設計

關鍵字(英)

★ Two-Way Relay Channel
★ Signal Space Alignment
★ Interference Alignment
★ Block Diagonalization Precoding

論文目次

致謝 i
摘要 ii
Abstract iii
目錄 iv
圖目錄 vi
表目錄 vii
符號說明 viii
第一章緒論 -1-
1.1 研究動機與背景 -1-
1.2 文獻探討 -3-
第二章中繼網路及多輸入多輸出技術簡介 -5-
2.1 中繼系統介紹 -6-
2.1.1 中繼網路訊號傳遞機制 -6-
2.1.2 雙向中繼網路與網路編碼 -8-
2.2 多輸入多輸出系統 (MIMO System) -9-
2.2.1 確定性多天線通道容量 (Deterministic MIMO Channel Capacity) -10-
第三章多用戶雙向中繼網路 -12-
3.1 系統模型介紹 -12-
3.2 中繼網路上行(Relay Network in MAC phase) -15-
3.2.1 訊號對齊空間選擇機制 -17-
3.2.2 用戶傳送預編碼器設計 -21-
3.3 中繼網路下行(Relay Network in BC phase) -23-
3.3.1 廣播通道與干擾問題討論 -24-
3.3.2 方塊對角化中繼廣播預編碼器設計 -25-
3.4 系統天線數量探討 -31-
3.4.1 上行用戶傳送天線與中繼接收天線數限制 -31-
3.4.2 下行中繼廣播天線與用戶接收天線數限制 -32-
3.4.3 中繼基地台天線數目與系統關係 -33-
3.5 系統可達信息總速率推導(Achievable Sum-Rate) -35-
3.5.1 雙向中繼網路可達總速率 -36-
3.5.2 基於傳送能量分配之傳送預編碼器設計 -37-
3.6 交替式用戶接收天線選擇與中繼廣播預編碼器設計機制 -38-
3.6.1 傳統用戶接收天線選擇機制 -39-
3.6.2 交替式用戶接收天線選擇機制 -40-
3.7 中繼接收天線分組機制 -45-
第四章模擬結果與討論 -50-
第五章結論 -60-
參考文獻 -61-

參考文獻

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指導教授

古孟霖(Meng-Lin Ku)

審核日期

2014-8-28

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