We are concerned with the relay selection in a decode-and-forward cooperative network to minimize the bit error rate (BER) in a radio cell. This problem can be solved using maximum weighted (MW) matching algorithm, greedy matching algorithm or worst-link-first (WLF) matching algorithm. Among the algorithms, WLF matching algorithm has achieved much attention for its being less complex while the achieved performance is high. In order to further reduce the computational complexity, we propose an improved WLF relay selection scheme, in which relays are selected according to instantaneous channel state information (CSI) and a cooperative threshold is set up to eliminate some unsatisfying candidate relays from the set of alternative candidate relays and thus reduce the amount of calculation. Theory analysis and simulation results both show that the improved WLF relay selection scheme proposed can be easily implemented and achieve almost the same BER performance as that of WLF scheme while the computational complexity is much lower.
목차
Abstract 1. Introduction 2. Transmission Model 3. Cooperative Threshold Analysis 3.1 High SNR in R — D link and low SNR in S — D link 3.2 High SNR in S — R link and low SNR in S — D link 4. Improved WLF Relay Selection Scheme 5. Conclusions Acknowledgements References
Yuhui Han [ School of Measurement and Control Technology and Communications Engineering Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Harbin University of Science and Technology Harbin, P.R.China ]
Mingji Yang [ School of Measurement and Control Technology and Communications Engineering Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Harbin University of Science and Technology Harbin, P.R.China ]
Aili Wang [ School of Measurement and Control Technology and Communications Engineering Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Harbin University of Science and Technology Harbin, P.R.China ]
보안공학연구지원센터(IJFGCN) [Science & Engineering Research Support Center, Republic of Korea(IJFGCN)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Future Generation Communication and Networking
간기
격월간
pISSN
2233-7857
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Future Generation Communication and Networking Vol.8 No.1