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학술지 Pilot and Data Power Allocation in Poisson Interference Field with Protected Zone for Physical-Layer Security
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저자
안성준, 박성익, 강준혁, 정성아
발행일
202102
출처
IEEE Wireless Communications Letters, v.10 no.2, pp.271-275
ISSN
2162-2337
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LWC.2020.3027838
협약과제
20HH8200, 5G와 방송망(ATSC 3.0) 연동 전송 기술 개발, 박성익
초록
Physical-layer security has become widely recognized as a promising technique to enhance wireless security by exploiting the characteristics including fading, noise, and interference. This letter explores an opportunity to enhance physical-layer security by balancing the power expense between pilot and payload signals without any prior knowledge related to eavesdroppers. In lieu of presuming perfect channel acquisition, we consider a practical wiretap channel with the receivers enabled by pilot-aided channel estimation (CE). The problem is tackled by accounting for the network interference from cochannel interferers in unknown locations by which the secrecy level is significantly affected. Specifically, the secrecy transmission rate (STR) reflecting the CE errors is derived for the worst-case within the use of a protected zone. We investigate the feasible region of pilot and data power allocation under reliability and secrecy constraints, and the optimal power allocation for pilot and data to maximize the STR is proposed, whose performance is verified via simulations.
키워드
Physical-layer security, pilot-data power allocation, protected zone, stochastic geometry
KSP 제안 키워드
Channel estimation(CE), Feasible region, Interference field, Network interference, Optimal power allocation, Physical layer Security(Physec), Stochastic geometry, Transmission Rate, Wiretap Channel, channel acquisition, pilot-aided channel estimation