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AuthorSoy, Hakki
AuthorÖzdemir, Özgür
AuthorBayrak, Mehmet
AuthorHamila, Ridha
AuthorAl-Dhahir, Naofal
Available date2023-04-04T09:09:11Z
Publication Date2013
Publication NameAEU - International Journal of Electronics and Communications
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.aeue.2013.05.002
URIhttp://hdl.handle.net/10576/41667
AbstractIn this study, we consider a single-hop wireless sensor network where both the sensor nodes and the controller node have multiple antennas. We focus on single beam opportunistic communication and propose a threshold-based medium access control (MAC) scheme for uplink packet transmission which exploits multiuser diversity gain without feedback in a decentralized manner. Packet transfer from sensor nodes to the controller node is initiated when the channel quality of any node exceeds the predefined threshold based on the effective signal-to-noise ratio (ESNR) measurements at the sensor nodes through linear combining techniques. The optimum threshold is determined to maximize the probability of successful packet transmission where only one sensor node transmits its packet in one time-slot. The proposed scheme trades the successful packet rate to increase the SNR of the successful packets assuming Rayleigh fading and collision-based reception model. Computer simulations confirm that proposed scheme has higher successful packet SNR compared to the simple time division multiple access (TDMA)-based MAC scheme with round-robin fashion. The use of multiple antennas at the sensor nodes can also improve the throughput of proposed scheme compared with our previous scheme without implementing the spatial diversity at the SNs. 2013 Elsevier GmbH.
SponsorThis work is supported by Qatar National Research Fund (QNRF), Grant NPRP 09-062-2-035.
Languageen
PublisherElsevier
SubjectLinear combining
MIMO
Multiuser diversity Opportunistic beamforming
WSNs
TitleDecentralized multiuser diversity with opportunistic packet transmission in MIMO wireless sensor networks
TypeArticle
Pagination910-925
Issue Number11
Volume Number67
dc.accessType Abstract Only


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