Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Repeatable and realistic wireless experimentation through physical emulation
ACM SIGCOMM Computer Communication Review
Versatile low power media access for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
A simple mechanism for capturing and replaying wireless channels
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
ExScal: Elements of an Extreme Scale Wireless Sensor Network
RTCSA '05 Proceedings of the 11th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
Kansei: a testbed for sensing at scale
Proceedings of the 5th international conference on Information processing in sensor networks
Trio: enabling sustainable and scalable outdoor wireless sensor network deployments
Proceedings of the 5th international conference on Information processing in sensor networks
Multipath fading in wireless sensor networks: measurements and interpretation
Proceedings of the 2006 international conference on Wireless communications and mobile computing
MoteLab: a wireless sensor network testbed
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
"RF in the Jungle": effect of environment assumptions on wireless experiment repeatability
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Novel Sum-of-Sinusoids Simulation Models for Rayleigh and Rician Fading Channels
IEEE Transactions on Wireless Communications
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Field experiments are an important part of research in wireless networks. Since the wireless channel varies with location and time, the results vary for the same field experiment at a different place and time. Assumptions about the wireless environment can lead to biased results. It is necessary to shield wireless transmission from uncontrolled interference in order to make the experiment repeatable. This paper describes $$\underline{A}$$ dvanced wirele $$\underline{SS}$$ $$\underline{E}$$ nvironment $$\underline{R}$$ esearch $$\underline{T}$$ estbed (ASSERT) which uses shielded co-axial cables as the communication media for radio signals to conduct reliable, scalable and accurate wireless experiments. Shielding the transmission also protects the signal from random burst of noise introduced by the environment. The paper describes how the combination of programmable attenuators and RF splitters/combiners, which are part of ASSERT, helps in emulating complex and varying environments including those in which multipath interference plays a significant role. Our experimental results indicate that (1) tweaking the MAC layer and retransmissions at the application layer neutralize, to an extent, the impact of multipath effects when the received signal strength is extremely good, and (2) when the received signal strength falls below a certain threshold multipath interference plays a significant role.