The computer network technology, satellite communication technology and multi-media technology offer a new teaching mode for the distance education.

计算机网络技术、卫星通信技术和多媒体技术为远程教育提供了一种新的教学模式。

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This paper is focused on the new concept of cluster OFDM for high-speed data transmission in the Satellite-Earth communication, researches on the key technology of synchronization and cluster.

本文研究了星-地高速数据传输的新型群聚OFDM概念，研究新型系统中的同步、群聚关键技术。

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