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The combined bulk/per-tone transmit antenna selection strategy has been shown to achieve optimal diversity and coding gains for single-hop systems with multiple transmit and receive antennas. In this paper, we extend this strategy to the case in which a set of user pairs communicate via a cluster of intermediary amplify-and-forward relaying nodes. We obtain an upper bound on the outage probability...
For fast-moving vehicles, radio channels can be severely fast-fading. Under such circumstances, the performance of multi-carrier communication systems, such as OFDM-based ones, are often limited by the inter-carrier interference (ICI) caused by time variation of the channel within one transmit symbol. The conventional way to mitigate the effect of ICI is to increase the frequency spacing between neighboring...
Autonomous underwater vehicles (AUVs) are deployed in search and rescue operations where it is difficult for divers to reach. During the operation a fleet of AUVs communicate among themselves and exchange two type of information. The first includes control signal which has a low-data rate but has a very stringent bit error rate (BER) requirement and the second being the data collected by the AUVs...
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