Paper Info
Title
Secret-Focus: A Practical Physical Layer Secret Communication System by Perturbing Focused Phases in Distributed Beamforming.
Abstract
Ensuring confidentiality of communication is fundamental to securing the operation of a wireless system, where eavesdropping is easily facilitated by the broadcast nature of the wireless medium. By applying distributed beamforming among a coalition, we show that a new approach for assuring physical layer secrecy, without requiring any knowledge about the eavesdropper or injecting any additional cover noise, is possible if the transmitters frequently perturb their phases around the proper alignment phase while transmitting messages. This approach is readily applied to amplitude-based modulation schemes, such as PAM or QAM. We present our secrecy mechanisms, prove several important secrecy properties, and develop a practical secret communication system design. We further implement and deploy a prototype that consists of 16 distributed transmitters using USRP N210s in a 20 x 20 x 3 m(3) area. By sending more than 160M bits over our system to the receiver, depending on system parameter settings, we measure that the eavesdroppers failed to decode 30% - 60% of the bits cross multiple locations while the intended receiver has an estimated bit error ratio of 3 x 10(-6).
Year
Venue
Keywords
2018
IEEE INFOCOM
Secret communication,distributed beamforming,physical layer security
Field
DocType
ISSN
Beamforming,Eavesdropping,Wireless,Computer science,QAM,Secrecy,Computer network,Communications system,Physical layer,Bit error rate
Conference
0743-166X
Citations 
PageRank 
References 
1
0.49
11
Authors
7
Name
Order
Citations
PageRank
Xiaoran Fan141.98
Zhijie Zhang210.82
Trappe, Wade33814236.68
Yanyong Zhang43116184.08
Richard E510.49
Howard610.49
Zhu Han711215760.71