半定规划，属于凸优化的一种，matlab 实现的源码，适合学习 Semidefinite Programming

subgrad_method_lin_feas.m---linear feasibility problem subgrad_method_mtx_complete.m -- positive semidefinite matrix completion subgrad_method_least_l1.m -- least l1-norm minimization subgrad_method_dual_prob.m -- solving dual problem using

利用cvx解半定规划问题，得到波束成形矩阵。(The semidefinite programming problem is solved by CVX)