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van de Burgwal, M.D. and Smit, G.J.M. (2008) Communication costs in a multi-tiered MPSoC. In: Proceedings of the 19th Annual Workshop on Circuits, Systems and Signal Processing, 27-28 Nov 2008, Veldhoven, The Netherlands. pp. 30-34. Technology Foundation STW. ISBN 978-90-73461-56-7
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The amount of digital processing required for phased array beamformers is very large. It requires many parallel processors, which can be organized in a multi-tiered structure. Communication costs differ for each of the stages in such an architecture. For example, communication costs from the antenna front-end to the first processing stages is costly because of the amount of connections and data rate. Furthermore there is a trade-off between sequential processing exploiting locality of reference versus exploiting parallelism but adding communication costs. Thus, the optimal architecture depends on the importance that is given to the different measures.
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