首页>
外国专利>
Circuit for detecting a predetermined symbol in a digital data stream and associated method
Circuit for detecting a predetermined symbol in a digital data stream and associated method
展开▼
机译:用于检测数字数据流中的预定符号的电路和相关方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A circuit for detecting a predetermined symbol of a digital data stream includes a frequency shifter, a correlator, a filter and a decision unit. The frequency shifter performs inverse-frequency shifting upon a first data to generate a first frequency-shifted data. The correlator calculates correlation upon the first frequency-shifted data and a second data to generate a correlated data. The filter, coupled to the correlator, filters and the correlated data to generate a filtered correlated data according to a time-domain windowing length. The decision unit, coupled to the filter, determines the predetermined symbol from the digital data stream according to the filtered correlated data.
展开▼