1.This paper presents an efficient symbol timing synchronization scheme suitable for IEEE802.16a wireless MAN system . The timing algorithm is proposed based on the preamble defined in IEEE802.16a, it is independent of the frequency offset, and the symmetry of the preamble structure can reduce the computational complexity.
本文提出了一种适用于IEEE802．16aWMAN(Wkreless MAN,无线城域网)系统的有效的符号定时同步算法,新算法是在802．16a定义的前导序列(preamble)的基础上提出的,不仅独立于频偏,而且利用前导序列(preamble)的对称性结构使得计算复杂度降低。
2.For multi-carrier (OFDM 256) symbol synchronization, in frame capture stage, as the Schmidl & Cox I and II algorithms have peak platform causing uncertainty of timing recovery, autocorrelation associated with coarse carrier offset estimate can be employed in allusion to long preamble. When in case of short preamble, Minn A method can get the obvious peak.
对于多载波(OFDM 256)符号同步,在时域帧捕获阶段,针对Schmidl&Cox I和II算法存在峰值平台而导致定时不准确,在长前导时结合载波粗同步由自相关估计算法来精确符号定时,短前导时Minn A方法也可得到明显的定时峰值。
3.The Preamble sets the tone for the rest of the article, and can drop a few hints as to how the reviewer feels about the product (obviously, this reviewer likes the Whiz-Bang).
导言可以确定下文的论调，你可以在导言中做出一些细微的暗示，比如你对这个产品的总体感觉等等。
4.Rule 22 An independent claim of an invention or utility model shall contain a preamble portion and a characterizing portion, and be presented in the following form:
第二十二条 发明或者实用新型的独立权利要求应当包括前序部分和特征部分，按照下列规定撰写:
5.Truth needs not many words; but a false tale a long preamble.
真理不须多言；谎言累牍连篇。
6.Preamble introduces the development and the function of CAAC.
导论：介绍中国民航的发展、租赁的重要作用及本文的研究意义。
7.(1) a preamble portion: indicating the title of the claimed subject matter of the technical solution of the invention or utility model, and those technical features which are necessary for the definition of the claimed subject matter but which, in combination, are part of the most related prior art;
(一)前序部分: 写明要求保护的发明或者实用新型技术方案的主题名称和发明或者实用新型主题与最接近的现有技术共有的必要技术特征；
8.Those features, in combination with the features stated in the preamble portion, serve to define the scope of protection of the invention or utility model.
这些特征和前序部分写明的特征合在一起，限定发明或者实用新型要求保护的范围。
9.He spoke without preamble.
他没有开场白地讲起来。
10.The subject of "Observation" is put forward in "Landscape Painting Preamble" by Zhongbing, containing profound aesthetic tastes and covering the tache of aesthetic visualization in aesthetic creation activities. "Observation" is affected by Chinese classical philosophy as aesthetic concept to form into aesthetic observation ways with Chinese characteristics.
摘要宗炳《画山水序》中提出的“应目”这一命题，蕴涵着深厚的美学韵味，其思想涉及到了审美创作活动中的审美观照这一环节。
