I am calculating the transmit power for $K$ single antenna IoT devices in an Indoor scenario. The receiver has 64 antennas. I am trying to minimize the transmit sum-power, i.e., $\sum_k p_k$, where $p_k$ is the transmit power of $k$-th IoT device. The noise power is -168dBm/Hz. The BW is 180kHz and the transmit frequency is 2.4GHz. I have a minimum requirement for the SNR.
Upon solving I am getting a transmit power in range of -60 dBm to -70dBm. Is the transmit power feasible considering the noise is too less and the path loss is minimal considering a room size of 10m, i.e, the max distance between transmitter and receiver is 10m?