介绍了计算机数据传输中的基带传输和频带传输；
This paper mainly introduces the baseband transmission and the waveband transmission of computer data .
OFDM可以使接收机中的基带处理单元大大简化，并且可以提高数据速率。
OFDM can simplify the base-band processing unit of the receiver greatly and can increase the data rate.
OFDM可以使接收机中的基带处理单元大大简化，并且可以提高数据传输速率。
OFDM can greatly simplify the baseband processing units at receiver and improve the data rate.
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