目录
摘要 ----------------------------------------------------------------------------------------------------------------------------I
ABSTRACT-----------------------------------------------------------------------------------------------------------------II
引言 ----------------------------------------------------------------------------------------------------------------------------1
1 绪论 -----------------------------------------------------------------------------------------------------------------------2
1.1 选题背景 ------------------------------------------------------------------------------------------------------------2
1.2 LTE 的研究背景---------------------------------------------------------------------------------------------------2
1.3 MIMO 的研究意义------------------------------------------------------------------------------------------------3
1.4 论文的主要工作和贡献 ------------------------------------------------------------------------------------------4
2 LTE 系统介绍-----------------------------------------------------------------------------------------------------------5
2.1 LTE 的关键技术---------------------------------------------------------------------------------------------------5
2.1.1
LTE
系统和物理层相关的性能指标
----------------------------------------------------------------------5
2.1.2
多载波技术
----------------------------------------------------------------------------------------------------5
2.2 LTE 的工作方式---------------------------------------------------------------------------------------------------6
2.2.1
FDD
双工方式
------------------------------------------------------------------------------------------------6
2.2.2
TDD
双工方式
------------------------------------------------------------------------------------------------6
2.2.3
H-FDD
双工方式
---------------------------------------------------------------------------------------------7
2.3 无线帧结构 ---------------------------------------------------------------------------------------------------------8
2.3.1
帧结构类型
1 -------------------------------------------------------------------------------------------------8
2.3.2
帧结构类型
2 -------------------------------------------------------------------------------------------------9
2.4 LTE 的关键技术 MIMO ----------------------------------------------------------------------------------------10
2.4.1
MIMO
系统的概念
-----------------------------------------------------------------------------------------10
2.4.2
MIMO
系统常见的几种传输模式
-----------------------------------------------------------------------11
2.4.3
MIMO
系统的优点
-----------------------------------------------------------------------------------------12
3 无线衰落信道的基本特征-------------------------------------------------------------------------------------------14
3.1 大尺度衰落--------------------------------------------------------------------------------------------------------14
3.1.1
路径损耗
-----------------------------------------------------------------------------------------------------14
3.1.2
阴影衰落
-----------------------------------------------------------------------------------------------------14
3.2 小尺度衰落--------------------------------------------------------------------------------------------------------15
3.2.1
频率选择性衰落
--------------------------------------------------------------------------------------------15
3.2.2
时间选择性衰落
--------------------------------------------------------------------------------------------15
3.2.3
空间选择性衰落
--------------------------------------------------------------------------------------------15
3.2.4
Rayleigh
和
Rice
衰落
--------------------------------------------------------------------------------------17
3.3 本章小结-----------------------------------------------------------------------------------------------------------18
4 MIMO 信道建模 ------------------------------------------------------------------------------------------------------19
4.1 信道容量的分类--------------------------------------------------------------------------------------------------19