關聯性多輸入輸出環境下之天線資源分配

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姓名

潘建安(Chien-An Pan) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

關聯性多輸入輸出環境下之天線資源分配
(Antenna Resource Allocation over Correlated MIMO Environment)

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摘要(中)

多天線輸入輸出系統之通道會因天線陣列間間隔過小或缺乏散射而有相關性，進而造成通到容量下降與通道估測之誤差。本文提出之多用戶多天線系統架構在接收端架構於虛擬域（virtual domain）的通道估測器以減低因關聯性所造成之估測誤差。接收端回授所得之通道狀態至傳送端以提供天線資源分配所需之資訊。
過去的通訊系統資源分配著重在功率與子載波的最佳化，然而本論文試以動態的天線數量分配求取最大可用通道容量而滿足不同使用者之需求作為資源分配之重點。天線資源分配機制在傳送端根據回授之通道資訊以及不同使用者在一時間單位內的通道容量需求決定傳送端應增加或減少之天線數量。本文以數值方法找出一雷瑞通道容量下以通道相關性、接受及傳送天線數、訊雜比為自變數，通道容量為應變數之近似式，以作為傳送天線數邊跟之評量依據。

摘要(英)

Scanty scattering of signals as well as insufficient antenna spacing cause channels of antenna array correlated, which degrades the capacity improvement of using multiple antennas and the channel estimation precision. Applying minimum mean square error (MMSE) channel estimation in the virtual domain can apparently lessen the channel estimation error due to the correlation effect. Multi-user multi-antenna transmission architecture with channel estimators cascaded at the receiver side is hence proposed so that each user can feedback channel state information for the further process of antenna resource allocation.
On the other hand, traditional resource allocation designs manage to maneuver the resources such as power, subcarriers, etc. This thesis tries to have dynamic antenna allocation as a resource for exploiting the maximum capacity usage based on the data rate requested by each user. Plus, a Rayleigh numerical channel capacity approximation, taking transmitted, received antennas, correlations, and signal-to-noise values as variables, is found to assist the decision of how many transmitted antennas should be added or taken off.

關鍵字(中)

★ 雷瑞通道容量近似
★ 虛擬域
★ 關聯性多輸入輸出
★ 最小平方誤差通道估測
★ 天線資源分配

關鍵字(英)

★ Rayleigh channel capacity approximation
★ MMSE channel estimator
★ virtual domain
★ correlated MIMO
★ antenna allocation

論文目次

Chinese Abstract i
Abstract ii
Acknowledgement iii
Content iv
List of Acronyms vi
List of Figures vii
List of Tables ix
Notations x
List of Symbols xi
1. Introduction
　　1.1 Motivation and Literatures Review........................1
　　　　1.1.1 Correlated MIMO Channel Model............. 2
　　　　1.1.2 Resource Allocation.....................................3
　　　　1.1.3 MIMO Antenna Selection............................4
　　1.2 Organization............................................................4
2. Correlated MIMO Environment
　　2.1 MIMO Channel Model.......................................... 6
　　2.2 Virtual Channel Representation.............................13
　　2.3 MMSE Channel Estimator.....................................17
　　2.4 Multiuser Channel Model......................................21
　　2.5 Computer Simulations...........................................22
3. Antenna Resource Allocation
　　3.1 Introduction to MIMO Channel Capacity...............31
　　3.2 Approximation of Channel Capacity......................34
　　3.3 Resource Management...........................................51
　　　　3.3.1 Scheduling Policies Comparison.................52
　　　　3.3.2 Antenna Scheduling and Selection..............55
　　3.4 Computer Simulation.............................................60
4. Concluding Remarks
　　4.1 Thesis Summary.....................................................70
　　4.2 Possible Application...............................................71
　　4.3 Future Works..........................................................73
Bibliography　　　　　　　　　　　　　　　　　　74

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指導教授

鐘嘉德、陳永芳
(Char-Dir Chung、Yung-Fang Chen)

審核日期

2006-7-4

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