在三大标准中atsc为单载波传输系统，能较好支持固定接收，峰均值比较小。

In three standards, ATSC is the single carrier transmission system, it is easy to support the fixed receiving, its peak average value quite being small.

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本文将软件无线电技术和OFDM多载波调制技术相结合，提出了基于软件无线电平台的OFDM多载波传输系统方案。

This paper mainly focuses on the combination of OFDM system with the Software Radio technology and presents OFDM transceiver scheme based on Software Radio platform.

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该改进方案改善了电力线载波通信系统的传输性能。

It can improve the transmission performances of power line carrier wave communication systems.

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