本文对基于叠加导频的信道估计方法进行研究。
In this thesis, we study the channel estimation methods based on the superimposed pilots.
本文的研究重点是OFDM系统的信道估计方法。
The paper focus on the research of channel estimation method in OFDM system.
第四章介绍了一种基于子空间的盲信道估计方法。
In chapter 4, a based on subspace blind channel estimation method is introduced.
在此基础上，改进了基于扩频序列的信道估计方法。
Then an improved proposal for the channel estimation using spread sequence was imposed.
提出一种使用矩形导频图案的OFDM信道估计方法。
A channel estimation method for OFDM systems using rectangular pilot pattern was proposed.
第二种方法是基于虚拟子载波的子空间盲信道估计方法。
The second method is based on the virtual sub-carrier subspace blind channel estimation method.
本文将详细研究OFDM系统基于导频的信道估计方法。
In this paper, the existed pilot-assisted channel estimation algorithms in OFDM systems are investigated in detail.
提出了OFDM通信系统中一种新型自适应信道估计方法。
A novel adaptive channel estimation method for OFDM communication system is proposed.
信道估计方法大致可分为数据符号辅助的信道估计和盲信道估计。
Channel estimation methods can be broadly divided as the data symbol auxiliary and blind channel estimation.
由时延和角度信息，得到一种基于参数信道模型的信道估计方法。
With the information of multipath delays and angles, an estimator based on parametric channel model is derived and the estimator's performance is analysed.
本文主要研究了无线OFDM系统中基于导频的时变信道估计方法。
This thesis mainly focuses on the time-varying channel estimation methods based on pilot tones in wireless OFDM systems.
目前，对于无线OFDM系统的信道估计方法仍处于研究和探索阶段。
At present, the channel estimation of wireless OFDM systems has been still in the progress of research and exploring.
我们提出了一种单输入单输出(SISO)正交频分复用时变信道估计方法。
We advance a novel method for the Single-Input-Single-Output (SISO) time-varying channel estimated of orthogonal frequency-division multiplexing (OFDM) systems.
因此，有必要对MIMO - OFDM系统的无线信道估计方法进行研究。
So it is necessary to study the channel estimation method of MIMO-OFDM systems.
然后主要研究了信道估计的两种方法：第一种方法是基于导频的信道估计方法。
Then channel estimation is studied two key ways:The first method is based on pilot channel estimation method.
基于连续OFDM符号上的导频子载波，给出了联合频率偏移纠正和信道估计方法。
In this paper, the pilot subcarriers on two consecutive OFDM symbols are utilized for joint frequency offset correction and channel estimation.
本文设计了自适应SC-FDE系统的信道估计方法，分信道捕获和信道跟踪完成。
So this thesis designs some simulations to compare the spectral efficiency of OFDM and SC-FDE.
实际无线环境中，多径分量数目与幅度都是时变的，则传统信道估计方法不再适用。
However, in the practical wireless environment, the number of channel taps and amplitude are all unknown and time-varying in whole process, thus typical estimation methods are not suitable.
本文根据OFDM系统特点，分析了OFDM系统的时域载波频率捕获和信道估计方法。
We propose new carrier frequency acquisition and channel estimation algorithms based on the time-domain analysis of OFDM system.
论文研究了基于多径时延跟踪的信道估计方法，并提出了一种低复杂度的多径时延跟踪方法。
We investigate the channel estimation algorithms based on tracking multipath time delay, a low complexity multipath time delay estimation method is proposed.
提出了一种适用于时间频率选择性衰落信道的MIMO - OFDM系统的组合信道估计方法。
A combined channel estimation method of time-frequency-selective fading channels in MIMO-OFDM systems was proposed.
提出的信道估计方法已成功运用于实际系统中，能够工作在复杂的无线移动环境，具有实用价值。
The channel estimation method proposed in the thesis has been successfully applied in practical system, which is able to operate in complex wireless mobile environment with a pragmatic value.
首先介绍了单天线系统下的信道估计方法，包括基于训练序列，导频的估计算法和LS估计算法。
It introduces the estimation algorithms of single-antenna system, including training sequences, pilots estimation and LS estimation at the beginning.
提出了一种面向直接序列扩频（DS-CDMA）通信系统的基于导频信号的自适应信道估计方法。
The estimation scheme for DS-CDMA systems includes a computationally efficient and easily implemented pilot filter on CDMA forward channel.
在基于频域导频的信道估计中，研究了导频子载波处的信道估计方法和数据子载波处的信道估计方法。
In the frequency domain pilot channel estimation, this thesis studies the pilot subcarrier and data subcarrier channel estimation algorithms.
在简单介绍了OFDM和SC - FDE中的一些信道估计技术后，我们提出了几种信道估计方法。
After describing some basic channel estimation algorithms in OFDM and SC-FDE systems, we propose some new channel estimation algorithms.
首先讨论了SISO - OFDM系统的信道估计方法：面向判决的信道估计和基于导频的信道估计。
First, the channel estimation technique in SISO-OFDM system is investigated, with the emphasis on decision-directed channel estimation methods and pilot-symbol-aided channel estimation methods.
第五章研究了基于一阶统计量的叠加训练序列的半盲信道估计方法，并结合检测结果来提高估计的精度。
In order to improve channel estimation's precision, in chapter 5, semi-blind channel estimation and detection using superimposed training's first-order statistics were studied.
第五章研究了基于一阶统计量的叠加训练序列的半盲信道估计方法，并结合检测结果来提高估计的精度。
In order to improve channel estimation's precision, in chapter 5, semi-blind channel estimation and detection using superimposed training's first-order statistics were studied.
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