|
K
rb
|
Denotes the number of all available time-frequency RBs
|
|
K
c
, K
d
|
Denote the number of CUEs or D2D pairs in a cell
|
|
N
c
, N
d
|
Denote the number of CUEs in a CUE subcluster and the number of D2D pairs in a DUE subcluster
|
|
C
i
|
Denotes the label of CUE in a CUE subcluster, where i varies from 1 to N
c
|
|
D
j
|
Denotes the label of D2D pairs in a DUE subcluster, where j varies from 1 to N
d
, and each D2D pair includes a D
j
− T
x
and D
j
− R
x
|
|
\( {\mathbf{s}}_{C_i}^m,{\mathbf{s}}_{D_j}^m \)
|
Denote the transmitted signal transmitted at the m-th subcarrier, and the subscript indicates the source of the signal
|
|
\( {\mathbf{E}}_{C_i},{\mathbf{E}}_{D_j} \)
|
Denote the diagonal matrix of the multiantenna transmit power, where the subscript indicates the source of the signal
|
|
\( {\mathbf{H}}_{i,j}^m \)
|
Denotes the Rayleigh channel matrix from node j to node i over the m-th subcarrier, with 0 mean and unit variance
|
|
L
i,j
|
Denotes the diagonal matrix of the path loss from node j to node i
|
|
r
i,j
|
Denotes the distance between node j and node i
|
|
\( {\mathbf{n}}_{\mathrm{BS}}^m,{\mathbf{n}}_{D_j}^m \)
|
Denote the additive white Gaussian noise (AWGN) on the m-th subcarrier
|
