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학술지 Interference and Sink Capacity of Wireless CDMA Sensor Networks with Layered Architecture
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저자
강현덕, 홍헌진, 성석진, 김기선
발행일
200802
출처
ETRI Journal, v.30 no.1, pp.13-20
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.08.0106.0276
협약과제
06MR1300, 전파자원 이용 기반 기술 개발, 김창주
초록
We evaluate the sink capacity of wireless code division multiple access (CDMA) sensor networks with layered architecture. We introduce a model of interference at a sink considering two kinds of interference: multiple access interference (MAI) and node interference (NI). We also investigate the activity of sensor nodes around the sink in relation to gathering data under a layered architecture. Based on the interference model and the activity of sensor nodes around the sink, we derive the failure probability of the transmission from a source node located one hop away from the sink using Gaussian approximation. Under the requirement of 1% failure probability of transmission, we determine the sink capacity, which is defined as the maximum number of concurrent sensor nodes located one hop away from the sink. We demonstrate that as the node activity of the MAI decreases, the variation of the sink capacity due to the node activity of the NI becomes more significant. The analysis results are verified through computer simulations.
키워드
Interference model, Layered architecture, Node activity, Sink capacity, Wireless CDMA sensor networks (WCSNs)
KSP 제안 키워드
Code division Multiple Access(CDMA), Computer simulation(MC and MD), Failure Probability, Gaussian approximation, Interference model, Multiple access interference(MAI), Sensor networks, Sensor node, Wireless CDMA, layered architecture