Channel estimation is the key technique to implement OFDM system, and is also the hotspot of research.
信道估计是实现OFDM系统的关键技术之一，也是目前研究热点。
In this first part of the thesis, we develop a simple and effective channel estimation method to overcome the problem.
在本论文的第一个部分，吾人即采用一个简单有效之通道估计法来克服此难题。
The channel estimation scheme was realized.
系统的信道估计方案的实现。
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing systems.
该文提出了一种新的信道估计算法，用于无线移动信道下的正交频分复用系统。
Then an improved proposal for the channel estimation using spread sequence was imposed.
在此基础上，改进了基于扩频序列的信道估计方法。
Therefore channel estimation and equalization have compact relationship.
因此，信道估计和信道均衡之间有着紧密联系。
In this paper, the key techniques of OFDM systems, such as equalization and channel estimation are studied.
本文主要研究了OFDM的信道估计和均衡等关键技术。
Modified MIMO channel estimation algorithm based on superimposed training sequence was proposed for the frequency selective channel.
针对提高无线信道的传输性能，提出了改进的基于叠加训练序列的MIMO信道估计算法。
Channel estimation and equalization are one of the core problems in the design of receivers in Digital Television Broadcasting-Terrestrial Standard.
信道估计和信道均衡无疑是数字电视地面广播标准接收机设计中所要考虑的核心问题之一。
To improve system performance, there are many key technologies need to be solved or improved in OFDM and SC-FDE systems, where channel estimation is one of them.
为了进一步提高系统性能，OFDM和SC -FDE系统都还有很多关键技术需要进一步的解决和完善，信道估计就是其中之一。
The space-time channel estimation and multiuser detection algorithm for the uplink of multicarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel were investigated.
研究了频率选择性瑞利衰落信道中的同步MC-CDMA系统上行链路空时信道估计及多用户检测算法。
There are many key technologies about the single-user detection, such as synchronization between receiver and transmitter, channel estimation and diversity.
单用户检测中的关键技术很多，主要有接收端和发送端的同步，信道估计和分集等。
This is a valuable on the MIMO channel estimation and signal detection receiving end of the article.
这是一篇比较有价值的关于MIMO信道估计与接收端信号检测的文章。
The second method is based on the virtual sub-carrier subspace blind channel estimation method.
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 low-voltage power line channel properties are analyzed in this paper and a decision feedback channel estimation method is proposed on condition of slow time-variant of channel.
该文分析了低压电力线信道特性，利用信道慢时变的特点提出一种适合于电力线信道的判决反馈信道估计方法。
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。
We further analyze the effect of channel estimation error on multiuser detection.
进一步分析了信道估计错误对多用户检测器的影响。
The process of channel estimation is adaptive and iterative.
其中信道估计的过程是迭代的、自适应的。
Beginning with brief introduction for the basic principle of OFDM, this paper establishes the system simulation model and thereafter analyzes the synchronization and channel estimation.
文章首先简要介绍了OFDM的基本原理，建立了系统仿真模型，对系统的同步和信道估计进行了分析。
In this paper, we focus on the application of adaptive filtering algorithms to channel estimation and noise cancelling.
本文主要研究几种自适应滤波算法在信道估计和噪声消除中的应用。
There are lots of key technologies about single user detection, such as synchronization between receiver and transmitter, channel estimation and diversity.
单用户检测中的关键技术很多，主要有接收端和发送端的同步，信道估计和分集等。
Coherent detection is always used in coded cooperation system, but it needs accurate channel estimation, which increases the system complexity.
通常的编码协作采用相干检测方式，要求精确的信道估计，从而增加了系统实现复杂度。
By using new DSTBC in OFDM communications system channel estimation is nto necessary and coding gain is gotten.
通过在OFDM通信系统中应用新型差分空时分组码（DSTBC），获得编码增益，无需信道估计。
Based on characteristics of the proposed pilot, an improved frequency domain least squares channel estimation method is proposed.
根据该导频的特性，提出了一种改进的频域最小二乘信道估计算法。
As a necessary input parameter for MAP decoding algorithm, SNR was normally obtained from the channel estimation unit.
作为MAP译码算法的必要参数，信噪比通常通过信道估计单元得到。
Synchronization and channel estimation are two key techniques for OFDM systems to ensure its good performance.
为保证其具有好的性能，需要时频同步、信道估计等一系列的关键技术加以支持。
Such method could better track channel change and eliminate the noise remarkably in the received pilot signal, and the precision of channel estimation had been improved.
这种方法可以更好地跟踪信道变化，显著地消除接收到的导频信号中的加性噪声，提高信道估计精度。
Such method could better track channel change and eliminate the noise remarkably in the received pilot signal, and the precision of channel estimation had been improved.
这种方法可以更好地跟踪信道变化，显著地消除接收到的导频信号中的加性噪声，提高信道估计精度。
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