Recent years have seen a proliferation in the use of wireless multi- hop networks in diverse scenarios ranging from community mesh networks to wireless sensor networks. As wireless networks find application in such wide- ranging arenas and are deployed at large scale, they will increasingly need to operate in the presence of heterogeneous, and often constrained hardware capabilities. Furthermore, fault-tolerant communication algorithms will be required to provide the building blocks for reliable operation in the face of failure and/or disruption. In this dissertation, we have investigated performance and fault-tolerance issues in networks of such wireless devices. We have studied two specific problem domains viz., throughput performance in multi- channel wireless networks where devices have heterogenous and constrained channel switching capabilities, and feasibility of fault-tolerant broadcast in single channel wireless networks where devices can exhibit Byzantine or crash-stop failure.
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