The paper is in IEEE. The title is "Bluetooth now or low energy: Should BLE mesh become a flooding or connection oriented network?"

Hello Ryan, thanks for your interests. That's indeed a very good question. Please note that the demo demonstrates the comparison of the different number of antennas in the uplink instead of the downlink. If our comparison is in the downlink, we have to keep total transmit power for a fair comparison for sure. The current implementation in the downlink takes the fixed total transmission power into consideration, but it's rather difficult to guarantee this, as the frequency domain information is distributed to multiple FPGA processors.