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The effect of the positions of the selected relays are examined. Three placement scenarios are assessed, with the sum of the distance of the source-to-relay and the distance of the relay-to-destination link fixed. In order to maintain the diamond relay topology, it is also assumed that distance from source to relay 1 is one meter less the distance from source to relay 2. The scenario in which both relays are near the midpoint between the source and the destination achieves a higher sum data rate than the other two scenarios. This occurs because the end-to-end capacity is dominated by the minimum of the source-to-relay and the relay-to-destination link capacities.
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IEEE/ICACT20220371 Slide.12
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