An estimator is a random variable.

估计量是一个随机变量。

This adaptive channel estimator is simple and practical.

这种自适应信道估计器简单而实用。

Is it possible for an estimator to be unbiased but inconsistent?

是否有可能(一个估计量)是无偏却不一致的？

We are discussing whether OLS estimator satisfy asymptotic normality.

我们讨论是否ols估计量满足渐近正态性。

Meanwhile, the stability property of the estimator is also discussed.

同时也讨论了一个有关估计器稳定性的性质。