ID |
原文 |
译文 |
45556 |
基于轻量级的前缀保持加密方案,提出一种保护隐私的网络功能外包系统。 |
Based on prefix-preserving encryption, a privacy preserving net-work function outsourcing system was proposed. |
45557 |
与现有同类方案相比,该系统不仅为企业用户同时实现了通信流量与网络功能策略的隐私保护,而且具有更高的吞吐量和更低的时延。 |
Compared with other similar schemes, the system not only realizes the privacy protection of communication traffic, but also has higher throughput and lower delay. |
45558 |
为了降低正交频分复用系统中 SLM 算法的峰均功率比,减少边带信息传输,提高频谱利用率,首先提出基于转移矩阵和混沌序列的 TL-SLM 算法。 |
In order to reduce the peak to average power ratio (PAPR) of the conventional selective mapping (SLM) algorithm, decrease the transmission of side-band information, and improve the spectral efficiency in the orthogonal frequency division multiplexing (OFDM) system, the TL-SLM algorithm based on the conversion matrix and the chaotic sequence was proposed firstly. |
45559 |
TL-SLM 算法有效减少了边带信息的传输,但 PAPR 的降低幅度有限。 |
Although the TL-SLM algorithm could effectively decrease the transmission of side-band information, the reduction of PAPR was limited. |
45560 |
因此,进一步提出基于旋转向量的改进 TL-SLM 算法,即 TR-SLM 算法, |
To solve this problem, an improved TL-SLM algorithm based on the rotation vector was proposed, which was the TR-SLM algorithm. |
45561 |
该算法通过旋转向量的引入,产生更多的时域备选信号,达到进一步降低 PAPR 的目的。 |
TR-SLM algorithm introduced the rotation vector to generate more time-domain alternative signals to further reducing the PAPR. |
45562 |
性能分析表明,虽然 TL-SLM 算法和 TR-SLM 算法少量增加了系统的复杂度,但 PAPR 性能得到了有效改善,而且较大幅度地减少了边带信息的传输。 |
The performance analysis shows that although the TL-SLM algorithm and the TR-SLM algorithm increase the complexity a little, the PAPR performance is effectively improved and the transmission of side-band information is greatly reduced. |
45563 |
针对没有第三方参与认证智能卡存储的访问密钥随注册云的个数增加而线性增长的问题,提出一种多云环境下基于智能卡的认证方案。 |
To solve the problem of the access keys stored in a smart card increasing linearly with the number of registered clouds without third party participated in authentication, an authentication scheme was proposed for multi-cloud environment based on smart card. |
45564 |
该方案在无第三方参与认证下,智能卡只需存储 2 个访问密钥就能实现用户与多个云服务器之间的身份认证, |
In the proposed scheme, the authentication was realized between user and multiple clouds without third party participation when the smart card only stored two access key. |
45565 |
有效地减少了智能卡的存储费用。 |
Thus the storage cost of smart card was reduced effectively. |