Joint Adaptive Modulation and Adaptive MAC Protocols for Wireless Sensor Networks

Provided by: International Journal of Computer Applications
Topic: Networking
Format: PDF
In this paper, the authors introduce cognitive MAC-layer techniques to Wireless Sensor Networks (WSN) to optimize Network survivability. They compare Adaptive Modulation (AM) over flat-fading channels, with data rate and transmit power being varied according to channel conditions with two variants: Adaptive Modulation with Idle mode (AMI) and a new Adaptive Sleep with Adaptive Modulation (ASAM) which dynamically adjusts the transmission and sleep modes based shared global information on channel conditions. These introduced cognitive methods assume power allocation schemes that improve energy efficiency and this node life assuming multi-hop relay networks.

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