比较分析了基于前导字的信道估计算法。
Comparative analysis of channel estimate algorithms utilizing preamble are conducted.
本文主要研究基于OFDM的低压电力线通信信道估计算法。
Channel estimation is researched for OFDM system in low-voltage power line communication in this paper.
提出了一种OFDM系统在时变多径信道中的信道估计算法。
A channel estimation algorithm is proposed for OFDM wireless communication system under time-varying multipath channel.
提出了一种适用于正交频分复用通信系统的非盲信道估计算法。
A non blind channel estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems in multipath channels was 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。
Based on characteristics of the proposed pilot, an improved frequency domain least squares channel estimation method is proposed.
在对电力线和OFDM系统分析的基础上，重点研究了信道估计算法。
On the base of analysis of power line channel and OFDM system, research is focused on the channel estimation algorithm.
如果信道估计算法太复杂和不够准确都将对后面的算法实现产生不利影响。
If the channel estimate algorithm is too complicated and inaccurate, it must be a bad influence to the later algorithms.
按照算法的可实现性来分类，目前存在的信道估计算法大致可以分为两类。
There are many channel estimation algorithms proposed in recent years which could be sorted into two kinds.
本文对自组织网物理层的载频估计算法和信道估计算法进行了研究和实现。
The carrier frequency offset estimation algorithm and channel estimation algorithm are studied and implemented in this paper.
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。
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing systems.
第五章：比较前述的几种主要的信道估计算法的性能，分析这些算法的主要特点。
In chapter five, performances of the channel estimation algorithm mentioned before is compared, and the advantages and disadvantages of these algorithms are analyzed.
本文提出一种基于相关矩阵列矢量平均的信道估计算法，该算法不需要特征分解或跟踪。
A new method based on column vector average of the autocorrelation matrix without eigendecomposition is presented to estimate the channel vector.
提出了一种基于导频信号和最大似然信道估计算法的离散小波包调制(DWPM)系统。
Discrete Wavelet Packet Modulation (DWPM) System based on ML (Maximum Likelihood) algorithm and Optimum Pilot Symbol Assisted Modulation (OPSAM) is studied for Rayleigh Fading Channels.
介绍了基于MMSE维纳滤波算法，变换域信道估计算法，以及判决反馈信道估计算法。
Introduce the Wiener filter algorithm base on MMSE, and time domain channel estimation algorithms.
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。
Modified MIMO channel estimation algorithm based on superimposed training sequence was proposed for the frequency selective channel.
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(OFDM)系统。
This paper proposes a novel channel estimation method for wireless Orthogonal Frequency Division Multiplexing (OFDM) systems.
本文主要研究无线OFDM系统中的信道估计算法，包括基于导频辅助信道估计算法和信道盲估计算法。
This thesis mainly focuses on the algorithms for channel estimation in the wireless OFDM systems including pilot assisted channel estimation and channel blind estimation.
基于对实际系统中信道冲激响应(CIR)泄漏问题的详细分析，提出了一种次优的时域信道估计算法。
Based on the detailed analysis of the channel impulse response (CIR) leakage in the practical OFDM systems, a sub-optimal time domain channel estimation algorithm is proposed.
本文主要致力于研究新的信道估计算法，明确提出了将多径信道的时延估计和幅度估计分开的信道估计方案。
The subject of this paper mainly focuses on the research of new algorithms and proposes the channel estimation principle explicitly: separate the estimation of multi-path amplitude and delay.
文中使用了改进的子空间跟踪信道估计算法，并仿真了不同信道估计方法、合并方法下系统的误比特率性能。
We use a modified subspace tracking channel estimation algorithm and simulate the system BER performance under different channel estimation approaches and combining methods.
由于LS算法不依赖于信道统计特性和较低的计算复杂度，本文最终选用了LS信道估计算法和DFT插值算法。
Because the LS algorithm is independent of channel statistical characteristics and has low complexity, LS channel estimating algorithm and DFT interpolating algorithm are chosen.
盲信道估计算法因完全不需要发送导频或训练序列，提高了系统的频谱利用率，受到了研究人员越来越多的关注。
Because of never needing to send pilot tones or training symbols that can improve the spectrum using efficiency of the systems, blind channel estimation has gotten more and more research attention.
分析了中国数字电视地面广播标准中的系统帧结构，并根据信号帧头的循环特性，提出了一种性能较好的信道估计算法；
The frame structure in Chinese DTTB standard is introduced, and a channel estimation algorithm with a better performance is given according to the cycle characteristics of the signal frame head.
文中分析比较了OFDM系统信道估计算法，并根据低压电力线信道的特点，选择了适合于电力线通信的信道估计方法。
In this paper, some algorithms for estimating channel in OFDM system are analyzed and compared, and the most appropriate one is selected according to power line channel's characteristics.
该算法在传统的基于块状导频的Ls信道估计算法的基础上，加入了相位跟踪算法，补偿了由残余频偏带来的相位旋转。
This algorithm combines the block Pilot-aided LS channel estimation algorithm with a phase tracking algorithm, which can compensate the phase rotation caused by the residual carrier frequency offset.
该文对MIMO - OFDM系统中基于导频辅助的LMMSE信道估计算法进行了研究，导出了其估计均方差的下界。
The LMMSE channel estimation algorithms based on Pilot-Assisted is investigated for MIMO-OFDM systems, and the Low-Bound of MSE for LMMSE channel estimation is derived.
最后作者提出一种改进型LS信道估计算法，该算法考虑了LS算法中噪声的影响，从而提高了低信噪比下信道估计的精度。
Finally, an improved channel estimation algorithm based on LS algorithm is presented. Considering the infection of the noise, the new algorithm has better performance under low SNR.
OFDM技术以其抗干扰性强，传输速率高成为低压电力线高速通信的主流技术。 信道估计算法是OFDM系统接收端的关键技术之一。
OFDM technique has been the mainstream in low-voltage power line communication because of its good capability against interference and high transmission rate.
OFDM技术以其抗干扰性强，传输速率高成为低压电力线高速通信的主流技术。 信道估计算法是OFDM系统接收端的关键技术之一。
OFDM technique has been the mainstream in low-voltage power line communication because of its good capability against interference and high transmission rate.
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