A multiuser detector based on blind channel estimation is proposed.
提出了一种基于信道盲估计的多用户检测方法。
Joint ML block semi-blind channel estimation is applied to OFDM system.
将联合最大似然分组半盲估计算法应用于正交频分复用系统。
In chapter 4, a based on subspace blind channel estimation method is introduced.
第四章介绍了一种基于子空间的盲信道估计方法。
Besides, its blind channel estimation performance is also analyzed in this paper.
还对信道盲估计性能进行了分析。
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。
Channel estimation methods can be broadly divided as the data symbol auxiliary and blind channel estimation.
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。
In this paper, a low-complexity blind channel estimation technique is proposed for long-code MIMO CDMA systems.
该文提出一种用于多输入多输出CD MA系统的信道快速盲估计方法。
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。
A non blind channel estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems in multipath channels was proposed.
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。
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 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。
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。
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。
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。
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。
This thesis mainly focuses on the algorithms for channel estimation in the wireless OFDM systems including pilot assisted channel estimation and channel blind estimation.
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。
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。
Channel estimation methods can be grouped into non-blind estimation, blind estimation and semi-blind estimation.
信道估计的方法从大的角度可以分为非盲估计、盲估计和半盲估计。
Rayleigh channel parameters are obtained by proposed semi-blind iterative estimation.
瑞利信道通过提出的半盲迭代估计得到。
Blind estimation dose not need the pilots and USES the received signal to estimate the channel state information.
盲估计不需要导频符号，直接利用接收的信号对信道进行估计。
This blind adaptive algorithm was studied without channel estimation. The algorithm is equivalent to an equal gain combining in mathematics form.
该算法在数学形式上可等效为等增益合并的形式，并可分别由子空间和最小最大滤波的方法来求解。
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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