The effects of pulse shape on the chip-asynchronous coherent time-spreading OCDMA system performances are analyzed by the aperiodic cross-correlation function of up-sampled sequence. 采用超抽样序列的非周期互相关函数值,研究了脉冲形状对切普异步时域相位光码分多址(OCDMA)系统性能的影响。
We design several different aperiodic photonic quantum-well ( APQW) structures to achieve the filter function in preassigned wave length range. 本文的主要内容是设计几个不同的非周期量子阱来达到预设波段的滤波器功能。
Multiple-access interference ( MAI) and beat noise ( BN) in coherent time-spreading optical code-division multiple access ( OCDMA) system are analyzed according to aperiodic cross-correlation function. 从码字的非周期互相关函数出发,分析异步相干扩时光码分多址(OCDMA)系统的多址干扰(MAI)和差拍噪声(BN)。
The aperiodic cross-correlation function between groups has either uniform IFW or perfect complement. 码组间的非周期互相关函数具有均匀分布的IFW,或者完美理想互补的特点。
ECONOMIC FUNCTION The periodic correlation function and aperiodic correlation function are discussed in this thesis. 本文讨论了序列的周期相关函数和非周期相关函数,归纳总结了部分周期相关函数的概念及性质,与此相对应给出了部分非周期相关函数的概念。
In radar applications, binary phase coded sequences are used with the property that their periodic or aperiodic autocorrelation function has an impulse-like form. 由于二相编码序列的周期自相关和非周期自相关函数具有低的时间旁瓣,因此广泛应用于雷达信号中。