Spreading sequences design is one of the key task in the direct-sequence spread spectrum communication systems.
扩频序列设计是直接序列扩频通信系统的关键课题之一。
In order to generate the optimal spreading sequences for asynchronous DS-CDMA, some optimizing criteria for selecting chaotic binary sequence were proposed.
为了获得异步ds - CD MA系统的最优扩谱序列，给出了一套用来选取混沌二值序列的优化准则。
A communicator USES BPSK direct - sequence (DS) spreading modulation and BPSK data modulation.
一个传达者使用BPSK指导序列(DS)传播调制和BPSK数据调制。
A new combined Surface Acoustic Wave (SAW) convolver, or a serial searching code acquisition scheme for direct sequence spreading spectrum (DSSS) communication system is presented.
提出了一种用于直接扩频通信系统（DSSS）快速捕获，新型组合声表子波（SAW）卷积器序列搜索码捕获方案。
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。
The spreading signal is a pseudo-noise code sequence that has a chip rate which is orders of magnitudes grater than the data rate of the message.
扩频信号是一个伪随机代码序列，此码片速率比消息数据速率高若干数量级。
It was proposed that the project of satellite overlay communication with direct sequence spectrum spreading (DSSS).
提出一种利用DS扩频技术实现卫星重叠通信的方案。
In direct sequence spread spectrum communication system when the spreading gain is limited, the performance of the communication system will be impacted by the strong power of narrowband interference.
在直接序列扩频通信系统的扩频增益受限时，强功率的窄带干扰对系统性能影响较大。
Direct sequence spread spectrum technique is the most widely used one and the kernel of the spreading spectrum techniques for people to study.
直接序列扩频技术是应用最广的一种扩频技术，研究它便于掌握扩频技术的精髓。
In addition, the number of the edge droplets, finger droplets and the satellite droplets decreases in sequence at a certain spreading process.
另外，在同一铺展过程中，边缘液滴、指形液滴和卫星液滴三者的数量呈依次递减的关系。
In addition, the number of the edge droplets, finger droplets and the satellite droplets decreases in sequence at a certain spreading process.
另外，在同一铺展过程中，边缘液滴、指形液滴和卫星液滴三者的数量呈依次递减的关系。
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