Table 1 List of main variables
\({\varvec{H}}_{u}\) | Channel matrix for the u-th user |
|---|---|
\({\varvec{W}}_{u}\) | Precoding matrix for the u-th user |
\(\bar{{\varvec{H}}}_{u}\) | Effective channel matrix for the u-th user |
\(\tilde{{\varvec{H}}}_{u}\) | Composite channel matrix for the u-th user |
\(\hat{{\varvec{W}}}\) | Sparse precoding matrix |
\({\varvec{S}}\) | Link selection matrix |
\({\varvec{S}}^{b}\) | Link selection sub-matrix for the b-th BS |
\({\varvec{S}}_{u}\) | Link selection sub-matrix for the u-th user |
\({\mathrm{N}}_{b}\) | Number of BSs |
\({\mathrm{N}}_{t}\) | Number of BS’s transmission antennas |
\({\mathrm{N}}_{u}\) | Number of users |
\({\mathrm{N}}_{r}\) | Number of user’s transmission antennas |