Because power line communication has several advantages, such as no need of new wire and low cost, it has drawn a lot of attentions in the fields of intelligent home LAN and broadband access.

由于电力线通信不需重新布线，成本低廉等优点，在智能家庭网络和宽带接入等领域受到了极大的关注。

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The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.

低压电力线信道特性是设计低压电力线载波通信系统的基础。

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The system requires two improvements: (1) the ability to counter the severe communication condition of low-voltage power line and (2) the ability to transmit music signal.

系统还需要在两个方面进行改进：(1)抵抗低压电力线恶劣通信状况的能力；(2)适合于音乐信号的传送。

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