The reason is that the transformer supply area is too broad and the low-voltageline is too long in present distribution model.
究其原因在于现有配电模式中配电变压器供电范围过大，低压线供电半径过长。
2
Orthogonal Multi-Carrier Modulation(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。
3
The low-voltage power line channel properties are analyzed in this paper and a decision feedback channel estimation method is proposed on condition of slow time-variant of channel.