Preprocessing-based branch dividing and cutting combined network optimizing and wave beam forming method

The invention discloses a preprocessing-based branch dividing and cutting combined network optimizing and wave beam forming method and relates to the field of wireless communication. In order to fully exert the advantage of combined transmission in multi-point transmission, optimize power, reduce cost of return link and reduce the implementation complexity of the system, the method comprises the following steps: firstly modeling the problem of optimization of power consumption and return link cost reduction as a non-convex hybrid integer programming problem, converting non-convex constraint to convex constraint to obtain MI-SOCP problem, then relaxing binary integer constraint and converting to an SOCP problem; then integrating a BnB method and a tangent plane method to obtain a BnC method, preprocessing part of binary integer variables to determine values of the variables, integrating the binary integer constraint with the values of the variables so as to greatly reduce the implementation complexity, optimize power and the cost of the return link. The preprocessing-based branch dividing and cutting combined network optimizing and wave beam forming method is suitable for processing signals in the field of wireless networks.