By investigating the code space in frequency domain and the data vector space of the multipath signals, the noise-subspace-based approach is used to perform blind channel estimation.
通过研究多径信号频域码空间和数据矢量空间，采用噪声子空间技术进行盲信道估计。
By unified signal model of antenna array Multicarrier DS-CDMA system, the subspace-based blind channel estimation is achieved.
通过在阵列天线多载波ds - CD MA系统下构造统一的信号模型，实现了基于子空间的信道盲估计。
Aiming at the phase ambiguity of the blind channel estimation in frequency domain, a blind channel estimation method in frequency domain based on dissymmetrical modulation constellation was proposed.
针对频域信道盲估计的相位模糊问题，提出了基于非对称调制星座的频域信道盲估计方法。
Because of the high algorithm complexity, the slow convergence and the signal or symbol obscure problem of the blind channel estimation, it is not suitable in practical use.
由于盲信道估计算法复杂度高，收敛时间长且存在信号或符号的不确定问题，不适于在实际中应用，因此本文主要研究的是基于导频的信道估计。
On the basis of the features of the Fast Fourier Transform (FFT) and digitally modulated signals, this paper proposes a blind channel estimation algorithm.
根据快速傅里叶变换(FFT)和数字信号调制解调的特点，给出了一种盲信道质量估计算法。
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.
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。
An improved algorithm is proposed based on the conventional channel blind estimation algorithm which USES the auto - correlation matrix of the vector of received signal in the OFDM systems.
本文针对传统的OFDM系统中利用接收信号的自相关进行信道盲估计算法提出了一种改进算法。
The improved algorithm uses cross-correlation between cyclic prefix and a special sub-vector from vector of received signal to implement channel blind estimation.
改进算法利用接收信号向量中的循环前缀与一个特定子向量作互相关来对信道作盲估计。
According to the characteristics of various algorithms, we can classify them into three types: pilot-assisted channel estimation, blind and semi-blind estimation.
根据算法的特点，信道估计可大致分为三类：基于导频辅助的估计、盲估计、半盲估计。
Robust time delay estimation method based on least mean p-norm blind channel identification(BCILMP) was proposed and applied to estimate the propagation velocities of GEA.
根据分数低阶统计量理论，本研究提出一种基于最小平均p范数盲信道辨识的韧性时间延迟估计算法（BCILMP），对胃电信号传导速率进行估计。
Robust time delay estimation method based on least mean p-norm blind channel identification(BCILMP) was proposed and applied to estimate the propagation velocities of GEA.
根据分数低阶统计量理论，本研究提出一种基于最小平均p范数盲信道辨识的韧性时间延迟估计算法（BCILMP），对胃电信号传导速率进行估计。
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