查询词典 semiblind

All of these make the reality of semiblind channel estimation to be possible.

这些措施使得半盲信道估计方法的实用化成为可能。

This paper proposes a subspace-based semiblind channel estimation method in MC-CDMA systems.

摘要该文提出了MC-CDMA系统中一种基于子空间的半盲信道估计方法。

In order to overcome the disadvantages of system performance degradation on the condition of pilot numbers smaller than channel impulse length and bad channel environment in many paths, an improved semiblind channel estimation algorithm based on MLE for OFDM system was presented.

为克服信道冲激响应长度大于导频数时出现系统性能下降，适应存在大量多径的恶劣信道环境，本文对OFDM系统基于MLE的半盲信道估计算法进行了改进。

Combined with the characteristic of the signal model in MC-CDMA systems, this semiblind method solves the problem of slow convergence by the initial channel estimation, estimates the scalar ambiguities by inserting some users' pilots and makes the algorithm complexity low by an iterative operation.

该方法结合MC-CDMA系统信号模型的特点，通过初始信道估计来解决收敛速度慢的问题；通过部分用户的导频符号以及预均衡技术来估计模糊因子；通过迭代算法来降低计算复杂度。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。