TY - GEN
T1 - Covert Communication in Backscatter Radio
AU - Shahzad, Khurram
AU - Zhou, Xiangyun
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - Covert communication in backscatter radio systems is considered, where the transmitter controls its transmit power to keep the transponder's response hidden, while a warden tries to detect this covert communication. To achieve covertness, we propose a non-conventional transmission scheme where the transmitter emits noise-like signal with transmit power varying across different communication slots. Under the assumption of a radiometer as the detector at the warden, we first derive the optimal detection threshold for this detector. Next, building upon the detection performance of warden, we analyze the condition on the transmit power to achieve a target level of covertness. Our numerical results illustrate the price a backscatter system has to pay, in terms of bit error rate, for achieving covert communication.
AB - Covert communication in backscatter radio systems is considered, where the transmitter controls its transmit power to keep the transponder's response hidden, while a warden tries to detect this covert communication. To achieve covertness, we propose a non-conventional transmission scheme where the transmitter emits noise-like signal with transmit power varying across different communication slots. Under the assumption of a radiometer as the detector at the warden, we first derive the optimal detection threshold for this detector. Next, building upon the detection performance of warden, we analyze the condition on the transmit power to achieve a target level of covertness. Our numerical results illustrate the price a backscatter system has to pay, in terms of bit error rate, for achieving covert communication.
UR - http://www.scopus.com/inward/record.url?scp=85070234190&partnerID=8YFLogxK
U2 - 10.1109/ICC.2019.8761392
DO - 10.1109/ICC.2019.8761392
M3 - Conference contribution
T3 - IEEE International Conference on Communications
BT - 2019 IEEE International Conference on Communications, ICC 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Communications, ICC 2019
Y2 - 20 May 2019 through 24 May 2019
ER -