以下为句子列表:
英文: A correlator and matched filter for use with coded transmission, such as CDMA, form new codes from the sums and differences of the original codes, where only one of the new codes is non-zero for each element position and effect hardware savings using the
中文: 本发明主要系用来将一输入讯号与二展频码作解展频的方法与装置,本发明利用二原始的展频码的和值与差值来形成二新码,由于二新码的组成元素同时只一不有其一不为零,利用此二新码组成元素后的特性可达到有效节省硬体的目的此技术,并可将此技术应用于编码传输(例如分码多重撷取)之关联器与匹配滤波器。
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英文: Abstract: A noise model for the analog correlator used in the ultra wideband receivers is proposed due to lack of simulation capability on noise performance of the correlator in current EDA tools.The analog correlator circuit is divided into several parts
中文: 文摘:给出了分析模拟相关器的噪声模型.将相关器分成不同的几个子模块后,对各模块分别计算等效噪声源.然后用理想脉冲源代替噪声源计算电路的时变传输函数,接着用傅里叶变换计算输入输出的频域关系.利用电路的对称结构合并对称的子模块可以进一步简化模型.该模型可以用来估计相关器的噪声性能.
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