2 problems

Coherence-band gradient similarity conjecture. For sufficiently large $\eta$, if $j\in B_{\eta}(i)$ and $x_i=x_j$, then

Let $N_T$ and $N_R$ denote the numbers of transmit and receive antennas in a clustered mmWave MIMO channel, and let the channel rank be the dimension of the channel matrix's range.…