Title :
Secret Communication Using Parallel Combinatory Spreading WFRFT
Author :
Fang Xiaojie ; Sha Xuejun ; Li Yong
Author_Institution :
Harbin Inst. of Technol., Harbin, China
Abstract :
In this letter, a parallel-combinatory-spreading-based weighted fractional Fourier transform (PCS-WFRFT) system aiming to guarantee physical layer (PHY) security is proposed. In this system, the transmission data are first divided into two groups. Based on the first group of data, a set of pseudonoise sequences is generated and then used to spread and encrypt the second group of data. In general, the proposed system is spread and dynamically encrypted by the message information itself, whereby both high bandwidth efficiency and high security performance are obtained. Numerical simulations are conducted to evaluate the performance of the proposed system in terms of the average bit error rate.
Keywords :
Fourier transforms; cryptography; error statistics; radio networks; telecommunication security; PCS-WFRFT system; PHY security; bit error rate; guarantee physical layer; message information; numerical simulations; parallel combinatory spreading WFRFT; parallel combinatory spreading based weighted fractional Fourier transform; pseudonoise sequences; secret communication; Baseband; Bit error rate; Cryptography; Demodulation; Fourier transforms; Receivers; Parallel combinatory spreading; physical layer (PHY) security; weighted fractional Fourier transform (WFRFT);
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2359200
