ID |
原文 |
译文 |
46556 |
利用矩阵置换原理和 r 循环信道矩阵的分解特性,提出一种自适应多速率 DFT 加扰矢量多载波码分多址接入(AMR-DFT-VMC-CDMA)系统模型。 |
To improve the performance and spectrum efficiency, a novel adaptive multi-rate DFT scrambling vector multi-carrier CDMA (AMR-DFT-VMC-CDMA) was proposed based on the theory of matrix permutation and r-cyclical matrix decomposition characteristics. |
46557 |
在理论分析的基础上,综合考虑一定信道利用率条件下,信道误码率与发送信号帧长的相互制约关系,提出自适应参数调整算法以确保足够长的传输帧长。 |
Meanwhile, by theoretical analysis, the para-meters of the system could be adaptively adjusted to ensure frame length long enough to break the restriction between channel bit error rate and data frame length on a certain channel utilization condition. |
46558 |
仿真结果表明,该系统在衰落信道下相比传统的多速率多载波扩频系统具有更好的性能, |
The simulation results show that compared with the traditional multi-rate, multi-sub carrier and spreading system, the new system could achieve multi-rate and multi-user information transmission flexibly with better performance and better spectrum efficiency in fading channels. |
46559 |
且通过调整参数,既满足了一定信道利用率下对帧长的要求,保证了频谱效率提高,又可以灵活完成多速率多用户的信息传输。 |
Moreover, it can satisfy the requirement of frame length under certain channel utilization by adjusting the parameters. |
46560 |
基于 Ding-广义割圆序列,构造了 GF(h)上一类新的周期为 p m 的广义割圆序列,且该序列为平衡序列。 |
Based on the Ding-generalized cyclotomy, a new class of generalized cyclotomic sequences with length p mover the finite field of power of odd prime order was constructed, and the sequence was balanced. |
46561 |
通过分析 h 与 p 的关系及多项式理论,确定了该序列的线性复杂度。 |
The linear complexity of the sequences was determined using the relationship between h and p and the theory of polynomial over finite field. |
46562 |
结果表明,该类序列具有良好的线性复杂度性质,将它们作为密钥流序列的密码系统具有抵抗 Berlekamp-Massey 算法攻击的能力。 |
It is shown that the sequence has good linear complexity, and it can resist attacks from the application of the Berle-kamp-Massey algorithm. |
46563 |
为验证云服务的可信性,提出一种改进的基于非平衡散列树的云平台远程验证方案。 |
In order to validate the service of cloud, an improved remote attestation scheme based on unbalanced hash tree of cloud platform was proposed. |
46564 |
通过引入层级构建双层非平衡散列树,将原先的单一树扩展为主树和子树,二者分别对应云服务平台中的虚拟机和虚拟机中的运行组件, |
Double-layer unbalanced hash tree was built by introducing layer, original single tree was expanded to main tree and sub tree, which corresponded to virtual machine in cloud platform and the running components in virtual machine. |
46565 |
证明时仅需要提供待度量组件和认证路径。 |
Attestation needs no more than measurement component and authentication path. |