Title

A Cross-Layer Optimization Approach for Lower Layers of the Protocol Stack in Sensor Networks

Document Type

Article

Publication Date

8-2014

Publication Source

ACM Transactions on Sensor Networks

Volume

11

Issue

1

Inclusive pages

16:1-16:30

DOI

http://dx.doi.org/10.1145/2590810

Publisher

A C M Special Interest Group

Place of Publication

United States

ISBN/ISSN

1550-4859

Peer Reviewed

yes

Abstract

A cross-layer optimization approach for the physical and medium access control layers of wireless sensor networks is introduced in this article. This approach includes a Markov chain model, simulations, and analytical derivations that are applied to the analysis of sensor networks using impulse radio ultra-wideband signals with noncoherent energy detection. This type of communication system has low-power transmission requirements and noise like signal characteristics with low interference to other wireless systems. The energy efficiency of different Reed-Solomon code rates and uncoded case are studied in a star topology network, where slotted Aloha, as defined in the IEEE 802.15.4a standard, is used as the medium access protocol. Analytical and simulation results clearly show the potential energy gains that can be achieved with the proposed optimization approach that can be also used in the evaluation and optimization of other combinations of physical and medium access control protocols.

Keywords

energy efficiency, impulse radio ultra-wideband, forward error correction, medium access control

Disciplines

Digital Communications and Networking

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