Link Adaptation Feedback Interval for Narrowband Mobile Ad-hoc Networks in Disaster Search and Rescue Scenarios


Sebastian Helmle, Michael Kuhn, Mathias Dehm, and Dirk Pesch


Mobile ad-hoc networks (MANETs) enable operation without fixed infrastructure, making them attractive for disaster search and rescue (SAR) and tactical applications. Reliability is an issue in such applications and increasing MANET communication reliability is critical for the acceptance of these systems. In this paper we investigate the impact of feedback delay on adaptive modulation and coding (AMC) in VHF narrowband MANETs. We analyse communication reliability and quality of service (QoS) under realistic conditions and study user net throughput for various AMC feedback delays. Results from Monte Carlo computer simulation show that a global maximum for the throughput with respect to interval exists. The achievable throughput, however, strongly depends on the user mobility pattern.


Collaborative European Research Conference (CERC) 2013, Cork, Ireland, October 2013