针对短波39音OFDM系统，提出了一种新型的符号同步和载波频偏估计方法。

A novel symbol synchronization and carrier frequency offset estimation method is presented for 39-tone OFDM systems.

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音效的质量低劣：爆音、不同步，有时甚至没有声音。

Sound can be poor quality: crackling, out of sync, and shutting down.

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金舒(音)五年前从牛津大学毕业后回到北京，他对北京能与英国伦敦和西班牙伊维萨同步感到很兴奋。

Jin Shu, a public relations executive who studied at Oxford before returning to Beijing five years ago, is thrilled that the capital is catching up to London and Ibiza.

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