Numerical values of the received signal in case of intercell interference

Hello!

Please, what are the numerical values of the variables in this formula and how is the channel matrix calculated?

yi= H_ii V_i s_i+ ∑1_(j=1, j≠i)^K〖H_ij V_i s_j+ n_i 〗

where 𝑯_𝒊𝒊 and 𝑯_𝒊𝒋 denote the channel matrix between 𝑩𝑺𝒊 and 𝑼𝑬𝒊, CUEj (i, j ∈ {1, 2, . . . , K} , 𝑖≠𝑗.

𝑽𝒊 of dimension 𝑀 × 𝑑𝑖 and 𝑉𝑗 of dimension 𝑀 × 𝑑𝑗 are 𝑩𝑺𝒊 and 𝑩𝑺𝒋 respectively,

si с размерностью di × 1 является сигналом вектора данных нисходящей линии связи BSi

n_i — аддитивный белый гауссовский шум.

This formula represents the signal received by the user i in the case of intercell interference