Orthogonal Multi-CarrierModulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
2
Orthogonal frequency division multiplexing (OFDM) as the representative of the multi-carriermodulation technique proved to be one of the most promising.
以正交频分复用(OFDM)为代表的多载波调制技术被证明是最有前途的方案之一。
3
The OFDM (Orthogonal Frequency Division Multiplexing) multi-carriermodulation is used to process messages instead of the traditional single carrier modulation.