The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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An Adaptive I/Q Diversity Combining Method for UHF RFID Reader Systems

UHF 대역 RFID 리더 시스템을 위한 적응형 I/Q 다이버시티 결합 알고리즘

  • 윤창석 (한양대학교 전자컴퓨터통신공학부) ;
  • 남성식 (한양대학교 전자컴퓨터통신공학부) ;
  • 조성호 (한양대학교 전자컴퓨터통신공학부)
  • Published : 2010.01.31
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Abstract

In this paper, we propose an adaptive I/Q diversity combining scheme which reduces unnecessary computations while maintaining the required performance level. The system with the proposed scheme adaptively applies a proper combining scheme among the conventional selective scheme and combining scheme based on the comparison result between the estimated instantaneous SNR and the pre-determined threshold. As a result, the system with our proposed scheme can reduce the computational load while maintaining the required performance level. Some selected simulation results show that the system with the proposed scheme can decrease the unnecessary computations compared with the system with the conventional schemes while maintaining the required performance level.

본 논문은 UHF 대역 RFID 리더 시스템에서 요구되는 성능 기준은 만족하면서 동시에 불필요한 연산을 줄일 수 있는 적응형 I/Q 다이버시티 결합 방법을 제안하였다. 본 논문에서 제안된 방법은 시스템에서 요구되는 기준 성능을 만족하면서 불필요한 연산을 줄이기 위하여 기존의 선택 또는 결합적 방법 중 순간 신호 대 잡음비와 시스템기준과의 비교를 통하여 가장 알맞은 결합 방법을 적응적으로 선택하여 적용한다. 시뮬레이션에서는 기존 다이버시티 결합 방법과 제안된 방법의 비교를 통하여 제안된 방법이 시스템 성능 기준을 만족하면서 불필요한 연산을 줄일 수 있음을 보였다.

Keywords

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