ID 原文 译文
45956 而随着认知无线电技术的发展，认知跳频多波束宽带卫星可以进一步提升频谱的利用效率， With the development of cognitive radio technology, cognitive beam hopping for multi-beam satellite system can further improve the efficiency of spectrum utilization, to meet the growing shortage of spectrum resources, to achieve large-capacity high-bandwidth broadband satellite network system, and to support the rising user service capacity and the transmission efficiency of user services under different load conditions.
45957 此外，软件定义网络技术也在卫星网络中得到应用，可以实现对卫星资源的有效管理，提高卫星资源的利用率。 In addition,software definition technology is also used in satellite networks, which could achieve effective management of satellite re-sources to improve the utilization of satellite resources.
45958 探讨了软件定义认知跳频多波束宽带卫星网络系统的原理， In this paper, the principle of software-defined cognitive hopping multi-beam broadband satellite network system is discussed.
45959 分析频谱利用效率，建立吞吐量等业务模型，进行仿真分析，可作为宽带卫星网络系统设计的参考。 The spectrum utilization efficiency and throughput are analyzed,which can be used as a reference for broadband satellite network system design.
45960 传统无证书签密方案在实际应用环境中容易遭受边信道攻击，带来密钥泄露问题。 In practical applications, the potential adversary may exploit partial information about the secret keys byside-channel attacks , traditional certificateless sign cryption schemes can’t resist these key-leakage attacks.
45961 为抵制此类攻击，基于椭圆曲线密码体制及双线性对提出一种抗密钥泄露的无证书签密方案， A leak-age-resilient certificateless signcryption scheme based on Elliptic Curve Cryptography and bilinear pairing was presented.
45962 并在随机预言机模型下证明方案的安全性建立在判定 Diffie-Hellman 问题的困难性之上， In the random oracle, proved that the security of the scheme is based on the decisional Diffie-Hellman assumption.
45963 且能抵制适应性选择密文及密钥泄露攻击，满足选择消息及密钥泄露攻击下的存在不可伪造性。 The scheme is also proved semantically secure against adaptive posterior chosen-ciphertext key-leakage attacks (KL-CCA2),and existentially unforgeable against chosen-message key-leakage attacks(KL-CMA).
45964 该方案没有使用构造复杂的非交互式零知识证明系统（NIZK），在签密阶段不含双线性对运算， The proposed scheme was free from non-interactive zero knowledge proof system and needs no bilinear paring operation in signcryption phase.
45965 与同类方案相比，能抵制密钥泄露攻击且具有较高的运算效率。 Compared with other schemes of the same kind, the proposed scheme can resist key-leakage attacks and maintains high efficiency.