Localization has been identified as a key and challenging topic in Wireless Sensor Networks (WSNs), especially for the applications requiring the accurate position of the sensed information. DV-Hop is a typical range-free node localization algorithm in WSNs; the localization cost and hardware requirements are not high and localization accuracy of sensor nodes is still low under certain circumstances. Based on the main reasons of the error DV-Hop algorithm, an improved algorithm is proposed in this paper which reduces the location error without requiring additional hardware. The proposed algorithm uses Received Signal Strength Indicator (RSSI) to give the hop count a correction value. In the proposed algorithm the hop count is no longer positive integer number, and can be positive real number. With this new idea, the distance between sensor nodes can be more accurately computed that that of in DV-Hop localization algorithm. Since the distance between sensor nodes estimation is a key issue in localization for WSNs, the proposed algorithm achieves better performance as compared with DV-Hop algorithm. Simulations are performed and the results show that the enhanced DV-Hop algorithm outperforms the DV-Hop algorithm in term of localization accuracy.
목차
Abstract 1. Introduction 2. Related Works 2.1. Overview of the DV-Hop Algorithm 2.2. Existing Improved DV-Hop Algorithm 3. The Improved DV-Hop Algorithm 4. Simulation Study and Performance Analysis 4.1. The Impact of the Network Scale 4.2. The Impact of Beacon Scale 5. Conclusions References
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.6 No.6