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Simulation results show that our algorithm enforces the adaptability of differential space-frequency modulation to the time delay expansion.Finally, we give our work to reduce the complexity of multiple symbol differential sphere decoding in differential space-time modulation. Through the modification of the enumeration strategy of the search tree in sphere decoding, we significantly reduce the complexity of detection at the expense of little loss on performance.

理论分析和仿真结果都验证了这种检测算法对长信道时延的适应能力论文最后还对差分空时调制中的多符号检测算法进行了研究,提出了一种降低差分空时调制系统中多符号差分球形译码算法复杂度的方法,通过改进球形译码中搜索树的排序策略,使得系统在牺牲较少性能的基础上大大降低了算法实现的复杂度。

Compared with the FFT-based computation to CAF, the presented method can scan the target only in certain circular sector instead of the whole ambiguity plane, which may decrease the computational load.

与基于FFT计算互模糊函数的方法相比,采用这种方法的优点是在检测目标时可以只扫描某个环形扇区而不用计算整个模糊平面,减小了计算量;另外,由于在计算互模糊函数时极角和极径的取样间隔可以任意选择,突破了时域采样间隔的限制,可在时延和频移上均得到高精度估计。

And then the control of Internet with time-varying time delay and data loss problem was discussed.

同时探讨了存在时变时延和数据丢失现象的Internet环境下的控制问题。

Based on the time-varying network condition, the analytic lower and upper bounds of EDs are given.

基于时变的网络条件给出了等价时延的上下界。

Subsequently, the absolute stability criteria for the closed loop system subject to sector-bounded condition are derived by use of Lyapunov functional method and linear matrix inequality technique.

应用Lyapunov稳定性理论和线性矩阵不等式工具,分析了各子系统在有扇形条件约束的绝时稳定性,同时得到网络控制系统全局稳定运行的最大允许时延界。

Chapter 4: Study and develop DS-CDMA full digital intermediate frequency receiver based on FPGA implementation.

研究了多用户接入的协议和算法,推导了CDMA时隙ALOHA系统的吞吐量和时延性能。

In this algorithm, multiple lag parameters and the spectrum correlation property are used to exploit the cyclic statistical information and time domain characteristics of signals sufficiently and ef-fectively. Moreover, this method remedies the lack of space domain information, and it is an extension from space domain to space-time domain. Therefore the ability to select the desired signals and supress the noise and interfering signals is improved.

该算法在利用信号的谱相关特性的同时使用了多个时延,将波束形成技术从空域扩展到了时空域,弥补了空域信息的不足,充分利用了信号的循环统计信息和信号的时域特征,提高了信号的选择能力和对干扰、噪声的抑制能力。

A new model for the received signal is established, and the received signal is the sum of two trilinear models.

文中建立了大时延扩展CD—MA信道下接收信号新模型,它将接收信号看成是2个三线性模型之和,并提出了广义三线性交替最小二乘的算法进行空时多用户检测。

So I picked up all my strength to make love to her again, and this time her reactions were even larger and soon she climaxed.

第二天一大清早,我要回香港,她不许,只得再多造一次,延至中午才到机场,临行时,她在我左脸脥上轻轻一吻就像多年前首次见面时所吻的位置。

The parameters were processed with SPSS for Windows12.0, and analyzed with repeated-measures ANOVA(α=.05).Results and Discussion:When the backpack load percentage during stair-down walking reaches 10%, knee landing angle, hip angle displacement, and vertical displacement of the center of gravity all have significant difference(pConclusion: Backpack load percentage has influence on human biomechanical performance during stair-down walking.

结果与讨论:下阶梯背重率达10%时,膝关节著地瞬间角度、髋关节角位移、重心垂直位移均达到显著差异(p<。05);当背重率达20%时,垂直分力与其产生时间、最大负荷率、踝关节肌肉力矩与角劲度亦达到显著差异(p<。05),此时人体必须透过增加踝关节角位移机制来降低垂直地面反作用力和最大负荷率及延后垂直峰值产生时间,藉以减少地面反作用力对人体所造成的冲击;而重心垂直位移也受到背重的影响而增加,以上均显示背重对人体下阶梯时下肢的负荷与影响。

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And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。

Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...

嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。