Understanding packet delivery performance in dense wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Taming the underlying challenges of reliable multihop routing in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Temporal properties of low power wireless links: modeling and implications on multi-hop routing
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
Models and solutions for radio irregularity in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Implications of link range and (In)stability on sensor network architecture
WiNTECH '06 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization
An empirical study of low-power wireless
ACM Transactions on Sensor Networks (TOSN)
Device-free and device-bound activity recognition using radio signal strength
Proceedings of the 4th Augmented Human International Conference
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Experimental studies in wireless sensor network (WSN) have shown that asymmetry in low-power wireless links have a significant effect on the performance of WSN protocols. Protocols, which work in simulation studies often fail when link asymmetry is encountered in real deployments. Therefore, characterization of link asymmetry is of importance for the design and operation of resilient WSN protocols in real scenarios. This paper details an empirical study to characterize link asymmetry in WSNs. It presents a systematic approach to measure the effects of hardware performance and environmental factors on link asymmetry using off-the-shelf WSN devices. It shows that, for the given hardware platform, transmitter power and receiver sensitivity are the major factors responsible for asymmetry in low-power wireless links, while frequency misalignment in the transmitter and power variations in the antenna are unlikely causes for it.