文档介绍：南京邮电大学
硕士学位论文
LTE-Advanced中单载波频分多址技术研究
姓名:嵇浩
申请学位级别:硕士
专业:通信与信息系统
指导教师:宋荣方
2011-03
南京邮电大学硕士研究生学位论文摘要

摘摘摘要要要
SC
FDMA (Single Carrier – Frequency Division Multiple Access, 单载波频分多址
接入) 技术被 3GPP LTE 选作未来 4G 网络中上行传输方案,主要是基于相对于
OFDM (Orthogonal Frequency Division Multiple) 技术,它具有更低的峰均比,同时
其设计的复杂度与 OFDM 相近。因此,最近几年 SC
FDMA 技术成为国内外众多
的科学工作者研究的热点之一,其已有的研究包包括进一步的降低 SC
FDMA 的峰均
比方法的研究,SC
FDMA 与 MIMO (Multiple
Input Multiple
Output ) 相结合的研究
等。
本文正是基于这一趋势势,主要针对以上两个方面对 SC
FDMA 作了一些进一步
研究,并提出了一些新的改进方法。在针对进一步降低 SC
FDMA 的峰均比方面,
本文首先获得了当采用传统的升余弦窗作为发送端脉冲成形滤波器窗函数时,其滚
降系数取值在附近可获得最理想性能的结论,其次提出将 Kaiser 窗函数代替升
余弦窗函数,使得系统获得了更低的峰均比;在针对 SC
FDMA 与 MIMO 技术而
形成的 MIMO SC
FDMA 系统研究方面,本文从 MIMO 的两种模式出发,分别研
究了 MIMO 空间复用模式和和发送分集模式下 MIMO SC
FDMA 系统的发送接收结
构图,并进行系统仿真,得出 MIMO LFDMA(Local SC
FDMA) 技术要比 MIMO
DFDMA(Distributed SC
FDMA) 更加加地适合作为上行传输方案。

I
南京邮电大学硕士研究生学位论文 ABSTRACT
ABSTRACT
SC
FDMA (Single Carrier
Frequency Division Multiple Access) was selected as the
work uplink transmission scheme ,which is mainly based on the fact that SC
FDMA has a much lower PAPR( Peak to Average Power Ratio) than the OFDM
technology, while its plexity is similar to OFDM. Therefore, researching on
SC
FDMA technology has e one of the most popular tendencies among the
foreign and domestic researchers and scientists, and it has many research branchs,
including the methods of further reducing SC
FDMA PAPR value , integration of MIMO
with SC
FDMA and so on.
Under this trend, this thesis focuses on doing further research on the two aboved
aspects and puts forward some new and improved ideas. For further reducing the SC
FDMA PAPR value , this paper firstly gets a conclusion that when using the traditional
raised cosine window as the transmitter pulse shaping function, its roll
off factor’s value
should select near in order to gain the best system performance, then a new Kaiser
window function is proposed to replace the t