CAJ | 학술논문

传统的安全传输机制依赖于计算受限的AES、RSA、ECC为代表的基于计算的安全算法,其随着计算技术的发展受到了严峻的挑战。物理层安全机制成为解决无线安全传输问题的新途径,但是其对信道依赖严重,在信道特性变化快的场景中难于保持概率为1的安全性能。本文将介绍一种运用在四发天线系统中基于传统空时分组码设计的空时变形码,通过物理层空时变形码结合上层加密技术实现无线系统的安全增强,为通信系统的安全性能提供双保险。仿真验证,这种变形码结合上层加密技术可以使通信可靠性接近1,有望成为未来5G通信的安全标准之一。
전통적안전전수궤제의뢰우계산수한적AES、RSA、ECC위대표적기우계산적안전산법,기수착계산기술적발전수도료엄준적도전。물리층안전궤제성위해결무선안전전수문제적신도경,단시기대신도의뢰엄중,재신도특성변화쾌적장경중난우보지개솔위1적안전성능。본문장개소일충운용재사발천선계통중기우전통공시분조마설계적공시변형마,통과물리층공시변형마결합상층가밀기술실현무선계통적안전증강,위통신계통적안전성능제공쌍보험。방진험증,저충변형마결합상층가밀기술가이사통신가고성접근1,유망성위미래5G통신적안전표준지일。
Traditional security mechanisms rely on calculating the constrained security algorithms represen-ted by AES, RSA, ECC, and with the development of computing technology, it is confronted with serious challenges. Designing security mechanisms in the physical layer is a new way to solve the problem of wire-less transmission security. However, it depends heavily on channel, thus is difficult to maintain safety per-formance probability of 1 in the scene of quickly-changing channel characteristics. This paper proposes a space-time deformation code based on traditional STBC applied in four transmit antenna systems. The se-curity of wireless communication is enhanced via the combination of physical-layer space-time distortion code and upper encrption technology, thus providing a double insurance for the safety of communication system. Simulation results indicate that the combined technology could make the communication reliability close to 1, and is expected to become one of the 5G communication security standards in the future.