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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.26 No.3
- 발행연도
- 2026.5
- 수록면
- 233 - 238 (6page)
이용수
초록· 키워드
This paper presents an efficient method for removing self-interference (SI) in antenna-less backscatter communication systems that generate two distinct modulated signal states. The performance of monostatic backscatter systems is significantly degraded by strong SI from the transmitter leaking into the receiver. Previous approaches to addressing this have involved brute-force parameter sweeping, which is time-consuming and impractical for dynamic environments. We propose a bi-stage genetic algorithm (GA) that automatically optimizes the amplitude and phase parameters of a cancellation signal, thereby maximizing the ratio of the high-state to low-state centroid magnitudes, termed the high-low centroid ratio, derived from the I/Q constellation of the downconverted baseband signal. This ratio serves as a proxy for the separation between the desired signal states and the residual interference floor. The proposed system demonstrates rapid convergence to optimal SI suppression parameters. Experimental results, including visualizations of the GA’s search path and centroid evolution on the I/Q plane, illustrate the effectiveness and efficiency of the proposed automated approach for real-world antenna-less backscatter applications.
#Antenna-less Backscatter
#Backscatter Communication
#Genetic Algorithm
#I/Q Plane Optimization
#Self-Interference Cancellation
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목차
- Abstract
- I. INTRODUCTION
- II. PREVIOUS EXPERIMENTS AND SYSTEM CONFIGURATION
- III. BI-STAGE GENETIC ALGORITHM OPTIMIZATION
- IV. RESULTS AND PERFORMANCE ANALYSIS
- V. CONCLUSION
- REFERENCES
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