A timing and frequency synchronization scheme based on FH sequence is proposed for the free space optical communication Orthogonal frequency Division Multiplexing (FSO-OFDM).

提出了一种基于FH序列的自由空间光通信多载波调制(FSO - OFDM)时间频率同步方案。

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The work of present timing-driven routing algorithms mainly is partitioned into three aspects: the delay model, the objective formulation and the solution space.

现有时延驱动布线算法的工作主要分为三个方面：时延模型、目标形式化、解空间。

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During analyzing the timing diagrams and K space-filling models of these several different GRE-EPI sequences, the BEST series is selected to combine with GRE sequence to improve SWI.

对这几种不同gre - EPI序列的时序图和K空间填充模式进行分析之后，选定与BEST序列相结合的GRE - EPI序列来改进SWI。

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And it put in perspective for me a time, timing and space and tact and understanding the political process and how I could be most effective in my lifetime.

NPR: Hip Hop Takes on Diplomatic Role with State Department

It is expected to improve substantially the availability and accuracy of timing and navigation signals delivered from space.

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"The authorization bill will not have an impact on this Friday's layoff, but it will result in adjustments to our plans for the timing and magnitude of future workforce reductions, " said Tracy Yates of United Space Alliance, the primary contractor being affected by the layoffs Friday.

CNN: Congress approves $19 billion for NASA but layoffs loom