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We present three approaches for algorithmic improvements on distributed adaptive transmit beamforming in wireless sensor networks. These algorithms reduce the time to synchronise carrier signals among nodes compared to the global random search approaches commonly applied to this problem. For a local random search heuristic we provide an asymptotic bounds on the optimisation time. All approaches are...
With collaborative transmission we propose a novel transmission scheme that utilizes constructive interference between transmitted signals of wireless sensor nodes. Similar to cooperative transmission approaches we are able to drastically extend the transmission range of a wireless sensor network. We show that synchronization of received signal components is feasible without inter-node communication...
We discuss impacts of the prediction search space size on accuracy and robustness of context prediction approaches. Additionally, the impact on error detection and correction capabilities are considered. Conclusions are experimentally verified in a realistic ubiquitous setting.
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