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- chaotic spread code 混沌扩频码
- At the time the company had grown to oversee a vast and chaotic spread of internet investments in America and Japan. 彼时，这家公司已兵强马壮，管理着美日两国庞大纷杂网络业投资项目。
- Theoretical analysis shows that the EOE Logistic Map chaotic spread spectrum sequences are better than the original sequences. 理论分析表明 ;EOELogistic映射有限长度扩频序列的奇 /偶相关特性较原序列有所改善 .
- A new chaotic spread spectrum communication system FFH-FMDCSK is presented, which is based on FMDCSK and fast frequency hopping techniques. 本文提出一种基于差分混沌频率调制(FMDCSK)的快速跳频扩谱通信系统(简称FFH-FMDCSK)。
- In the last chapter of tbe article,BER that chaotic spread spectrum sequences apply in mobilesatellite spread spectrum communication system is studied. 最后结合移动卫星通信系统模型，把混饨扩频序列实际应用于移动卫星扩频通信系统中，相应分析了它的误码性能。
- The BOC(1,1) and its spread code correlation function figure were drawn by digital simulation,and the correlation function peaks were compared. 通过数字仿真得到了BOC(1;1)和扩频码的相关函数图;比较了二者相关函数的峰值.
- So, finding a feeling spread code in people spread is not only the key of success of present spread in marketing but also a rethought of Chinese people culture characterizations. 因此找寻大众传媒中的情感传播密码不只是当代媒介在市场营销中的取胜之道,更是关乎中国大众传媒文化品格的一次反思。
- In order to expand the group of ades on communication system with asynchronous code division multiaddress (CDMA), the possibility of using chaotic spreading sequences was researched. 为了增加异步码分多址通信系统的可用码组，研究了在该系统中使用混沌扩频序列的可能性。
- The analytic formula for BOC(1,1) autocorrelation function was deduced,the position for peak values and zero values were shown. The correlation function values and acquisition were compared between BOC(1,1) and its spread code. 推导了BOC(1;1)相关函数的解析式;给出了相关函数中的零点位置和峰值位置;比较了BOC(1;1)和扩频码的相关函数数值及捕获.
- Chaotic spread spectrum sequence 混沌扩频序列
- chaotic spread spectrum sequences 混沌扩频序列
- The improved piecewise linear chaotic mapping is presented to generate the spreading codes for DS-CDMA system in this paper. 摘要本文提出用改进型分段线性混沌映射来产生DS-CDMA系统的直扩码；
- An algorithm for fractionally spaced channel estimation of a synchronous CDMA system is proposed that uses aperiodic spreading code. 该文提出一种应用于非周期扩频的同步CDMA系统的下行信道的分数阶间隔信道估计的算法。
- Moral taint has spread among young people. 道德的败坏在年轻人之间蔓延。
- He spread the map flat out on the floor. 他把地图平铺在地上。
- In the CDMA wireless communications system , multi-access interference and near-far effect exist because spread codes between users are not completely orthogonal along with different users random accessing, regular filter can not overcome these questions. 码分多址系统中，不同用户的随机接入，使得用户之间扩频码不完全正交，进而产生了多址干扰(Multi-access interference，MAI)和远近效应(Near-far effect，NFE)等问题，常规的匹配滤波器无法克服这些问题。
- Considering the issue of the complexity, which means to use separate TF-domain re-ceiver, we prefer adopting VSL access scheme whether increasing spreading code as-signment on T-domain or F-domain. 若因考量硬体复杂度而采用分离时频率接收机，则使用可变展码长度存取技术将是较佳的方法。
- This method directly makes quadrature demodulation of the IF signal by utilizing the second-order sampling and sign-alternating,and then calculates the correlation value between the receiver signal and the local spreading code in analog domain. 该捕获方法采用二阶采样和符号交替实现中频信号的正交分解;再利用模拟匹配滤波器在模拟域计算接收信号与本地扩频码的相关值.
- A hopeless future seemed to spread out before her. 展现在她面前的似乎是毫无希望的前途。
- He has spread a slice of bread with Jam. 他把面包片抹上了果酱。
