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Based on the frame structure of intermediate data rate （IDR） modem for satellite communication, a new method for searching frame synchronization called group frame synchronization is proposed. At the same time, a candidate scheme in the classical frame synchronization and two candidate schemes in the group frame synchronization are presented, and the circuits for each scheme are designed in order to abstract the frame alignment signals from received data. Their implementation complexity and performances are also computed and given. Based on the analysis and performance comparison, a reasonable scheme is chosen and then verified through software simulation and hardware impletentation. 相似文献
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采用磁控溅射技术，使用混合气体Ar和O2，在衬底温度为150-400℃的耐热玻璃基片上制备了纳米晶SnO2：Sb透明导电薄膜，通过测定X射线衍射谱，表明薄膜择优取向为[110]和[211]方向，测量了SnO2：Sb薄膜的结晶特性随衬底温度变化以及纳米晶SnO2薄膜FE—SEM表面及断面形貌。 相似文献
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