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How to select the OOK detection threshold in wireless ad hoc and sensor networks
KTH, Skolan för elektro- och systemteknik (EES), Reglerteknik. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.ORCID-id: 0000-0001-9810-3478
2009 (engelsk)Inngår i: IEEE Vehicular Technology Conference / [ed] 69th IEEE Vehicular Technology Conference Barcelona, SPAIN, APR 26-29, 2009, 2009Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

On-off keying (OOK) is an attractive modulation technique to reduce energy consumption of power-constrained wireless networks. The OOK detection threshold, however, must be carefully selected to minimize the bit error probability (BER). This is a challenging task to accomplish on resource-limited nodes or on networks with high-mobility. In this paper, an efficient algorithm to compute the optimal threshold is proposed. The system scenario considers nodes simultaneously transmitting over same frequencies in Rayleigh-log-normal or Rice-log-normal fading conditions. It is shown that by using the Stirling expansion for the BER, and a log-normal approximation, a quick contraction-mapping can be built to achieve the threshold numerically. The mapping is simple to implement and converges quickly. Numerical simulations verify the validity of the theoretical analysis, and show that the new algorithm performs quite well in scenarios of practical interest.

sted, utgiver, år, opplag, sider
2009.
Serie
IEEE Vehicular Technology Conference, ISSN 1550-2252
Emneord [en]
CDMA, On-off keying (OOK) modulation, Wireless sensor network (WSNs), Bit error probability, Detection threshold, Efficient algorithm, Energy consumption, High mobility, Log-normal, Log-normal fading, Modulation techniques, Numerical simulation, On-off keying, Optimal threshold, Rayleigh, Stirling, Wireless ad hoc and sensor networks, Ad hoc networks, Algorithms, Bit error rate, Code division multiple access, Computer simulation, Electric load forecasting, Error detection, Modulation, Optical communication, Probability, Sensor networks, Wireless telecommunication systems, Wireless sensor networks
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-28511DOI: 10.1109/VETECS.2009.5073578ISI: 000273169200026Scopus ID: 2-s2.0-70349664430ISBN: 978-1-4244-2516-7 (tryckt)OAI: oai:DiVA.org:kth-28511DiVA, id: diva2:390363
Merknad
QC 20111021Tilgjengelig fra: 2011-01-21 Laget: 2011-01-14 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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