The directional-modulation vulnerability conjecture
Let cA(s,n)c_{\mathcal{A}}(s,n)cA(s,n) denote the relevant coefficient for symbol s∈Ss\in\mathcal{S}s∈S and index nnn. For a fixed nnn, compare the values cA(s,n)c_{\mathcal{A}}(s,n)cA(s,n) as sss ranges over…