例句與造句

1. In the thesis , an approach that is based on signal - space concepts is used to efficiently evaluate the ber performance of mpsk and mqam over an additive white gaussian noise channel . in particular , accurate ber approximations are obtained and shown to be in good agreement with system simulation results . it may be useful to research and development of digital modulation technologies in hfc of our country
   嘗試采用基于信號(hào)空間的分析方法，給出了awgn信道中mpsk和mqam的ber的計(jì)算方法以及由這種方法得到的ber性能曲線，然后將信號(hào)空間分析法得到的結(jié)果與通信系統(tǒng)仿真的結(jié)果進(jìn)行比較，證明其與仿真結(jié)果較好地吻合。
2. It's difficult to find additive white gaussian noise channel in a sentence. 用additive white gaussian noise channel造句挺難的