这种新方法不但能够分辨时延结构紧密的多径分量，而且能有效改善多径衰减参数的估计。
The algorithm can distinguish close-spaced multipath components, and to improve multipath attenuation parameters estimation effectively.
但是电力线信道上存在的各种噪声、衰减和多径传播等问题，这些都大大提高了通信的难度。
But the noises, the attenuation and the multipath propagation inhering in the powerline make it very difficult to realize such kind of communication system.
该模型充分考虑了多径传播，以及频率和长度对衰减的影响，使其更具有实用价值。
The model has fully considered the multi way of transition, as well as the frequency and length affected to the reduction in order to have more practical value.
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