ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 Distributed Synchronization for OFDMA-Based Wireless Mesh Networks
Cited 9 time in scopus Download 4 time Share share facebook twitter linkedin kakaostory
저자
김지형, 김정현, 임광재
발행일
201402
출처
ETRI Journal, v.36 no.1, pp.1-11
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.14.0113.0223
협약과제
12PI1300, 차세대 기동노드간 적응형 무선메쉬 통신 시스템 연구개발, 권동승
초록
In this paper, we propose a distributed synchronization algorithm for wireless mesh networks based on orthogonal frequency division multiple access. For time and frequency synchronization, a node requests its neighbor nodes for a change of fast Fourier transform starting points, transmission times, and carrier frequencies needed for synchronization. The node also updates its own time and frequency elements through simple formulas based on request messages received from neighbor nodes using a guard interval and a cyclic prefix. This process with the cooperation of neighbor nodes leads to a gradual synchronization of all nodes in the network. Through a performance comparison with a conventional scheme, we obtain simulation results indicating that the proposed scheme outperforms the conventional scheme in random topologies and a grid topology. © 2014 ETRI.
키워드
Cooperation, Distributed synchronization, OFDMA, Wireless mesh networks
KSP 제안 키워드
Cyclic prefix(CP), Fast Fourier transform, Frequency division multiple access(FDMA), Grid Topology, Orthogonal Frequency Division Multiple Access(OFDMA), Performance comparison, Random Topologies, Wireless Mesh Network, distributed synchronization algorithm, guard interval, simulation results