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

作者：Li Yingshan^*; Wu Chao; Sun Dongyan; Xia Junli; Ryu Heung Gyoon

来源：Journal of Communications and Networks, 2013, 15(5): 457-463.

DOI：10.1109/JCN.2013.000084

• Adaptive modulation and coding (AMC)
• cooperative transmission
• encryption
• single-carrier frequency division multiple access (SC-FDMA)

In recent days, cooperative diversity and communication security become important research issues for wireless communications. In this paper, to achieve low probability of interception (LPI) and high throughput in the cooperative single-carrier frequency division multiple access (SC-FDMA) system, a new physical layer transmission scheme is proposed, where a new encryption algorithm is applied and adaptive modulation is further considered based on channel state information (CSI). By doing so, neither relay node nor eavesdropper can intercept the information signals transmitted from user terminal (UT). Simulation results show above new physical layer transmission scheme brings in high transmission safety and secrecy rate. Furthermore, by applying adaptive modulation and coding (AMC) technique according to CSI, transmission throughput can be increased significantly. Additionally, low peak-to-average power ratio (PAPR) characteristic can still be remained due to the uniform distribution of random coefficients used for encryption algorithm.

• 出版日期2013-10
• 单位南开大学