上行SC-FDMA协作通信系统中联合SFBC编码的物理层加密传输方案  

A New SFBC Combined Physical Layer Transmission Scheme for LPI and High Throughput in the Cooperative SC-FDMA System

作　　者：吴超 陈大爽[1] 商亚莉 李海月 李英善 

机构地区：[1]南开大学电子信息与光学工程学院通信工程系,天津 [2]石家庄科技工程职业学院机电工程系,河北石家庄

出　　处：《无线通信》2016年第2期61-71,共11页Hans Journal of Wireless Communications

摘　　要：当前协作通信的多样性和安全性已成为越来越重要的问题。在本论文中,为了在上行SC-FDMA (单载波频分多址)协作通信系统中达到低截获概率(LPI),低误比特率和高吞吐量的目的,我们提出了一种新的联合SFBC编码的物理层加密传输方案,将SFBC编码联合用于物理层加密算法,并接着与自适应编码调制相结合。运用我们新提出的联合SFBC编码的物理层加密传输方案,无论是RN还是窃听者都不能从发射机(UT)获取任何有用信息。实验结果表明,联合SFBC编码的物理层加密传输方案可以进一步提高信息传输的安全性,得到很好的保密速率,并且进一步提高系统的传输性能和吞吐量。In recent days, cooperative diversity and communication security become important research issues for wireless communications. In this paper, to achieve LPI (low probability of interception) and high throughput in the cooperative SC-FDMA (Single-Carrier Frequency Division Multiple Access) system, a new SFBC combined physical layer transmission scheme is proposed, where, a new SFBC combined encryption algorithm is applied, adaptive modulation based on CSI (channel state information) is further considered. By doing so, neither relay node nor eavesdropper intercepts the information signals transmitted from UT (user terminal). Simulation results show above new SFBC combined physical layer transmission scheme can bring in higher transmission safety and secrecy rate, further derive better transmission performance and transmission throughput.

关 键 词：LPI 协作通信 SFBC SC-FDMA 加密 

分 类 号：TN91[电子电信—通信与信息系统]