Coordinated Precoding for D2D Communications Underlay Uplink MIMO Cellular Networks

Algorithm 1

Centralized precoding algorithm for solving problem (P1).

(1) initially set , , , , , , and .

(2) repeat

(3)  compute , with , and compute , with .

(4)  compute by solving problem (P2) with CVX solver [22].

(5)  update , and update with .

(6)  compute according to (4).

(7) until the termination criteria is satisfied.

(8) return   and .