First, the channel estimation technique in SISO-OFDM system is investigated, with the emphasis on decision-directed channel estimation methods and pilot-symbol-aided channel estimation methods.

首先讨论了SISO - OFDM系统的信道估计方法：面向判决的信道估计和基于导频的信道估计。

youdao

When magnetic interference was directed at another part of the brain, the parietal lobe, the subjects' decision-making remain unchanged.

当磁铁被移动到大脑的另一部位顶叶时，受试者的决策力未受影响。

youdao

When American regulators visited Japan, they “directed us to think of things from a customer’s perspective, ” Mr. Sasaki added. “We took this seriously and made the decision to recall the cars.”

当美国的条例管理者造访日本的时候，佐佐木辛一说，“他们指导我们试着从消费者的角度考虑问题，我们对此建议很重视，才决定召回汽车。”

youdao

The decision came in a case concerning the physical and verbal abuse directed at Joseph Oncale, an oil-rig roustabout, by fellow male workers.

ECONOMIST: Men, women, work and law