NDLI: DS/CDMA throughput of multi-hop sensor network in a Rayleigh fading underwater acoustic channel

Content Provider	IEEE Xplore Digital Library
Author	Mar, C.H. Seah, W.K.G.
Copyright Year	2006
Description	Author affiliation: NUS Graduate Sch. of Integrative Sci. & Eng., Nat. Univ. of Singapore, Singapore (Mar, C.H.)
Abstract	Asynchronous half-duplex direct-sequence code-division multiple-access (DS/CDMA) is a suitable candidate for the MAC protocol design of underwater acoustic (UWA) multi-hop sensor networks due to its many attractive features. However, multi-hop communications is very sensitive to the time variability of fading and the snapping shrimp dominated ambient noise in the harsh underwater environment because a broken link in the multi-hop path is enough to disrupt the communications and initiate new route searches. We analyze the theoretical MAC throughput of the network using the ad hoc on-demand distance vector (AODV) routing protocol with Poisson distributed, constant length packet arrivals at the application layer. We consider horizontal communications of sensors operating in shallow water near coastal regions. Previous empirical studies show that we can model the UWA channel as a slow-varying Rayleigh fading and frequency non-selective channel. The optimal throughput performance of the network under various operating conditions is then examined.
File Size	288168
File Format	PDF
ISBN	0769524664
ISSN	1550445X
DOI	10.1109/AINA.2006.156
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-04-18
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Throughput Spread spectrum communication Acoustic sensors Rayleigh channels Underwater acoustics Media Access Protocol Underwater communication Sensor phenomena and characterization Acoustic noise
Content Type	Text
Resource Type	Article

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