1 2 3 and 4 respectively its four outputs are cascaded individually by rf phase and amplitude compensation circuits mechanisms 213 which are driven by an optimization loop their outputs 214 are connected to the 4 individual inputs of the pas 220 individually the outputs 221 of the 4 pas 220 become the inputs to the 4 to 4 wf demux processor 232 the four outputs 234 from the wf demuxer are depicted as ports a b c and d respectively the iterative equalization processor 235 consists of two functions diagnostic 235 a and optimization 235 b the outputs of the optimization process 235 b will be the parameters for equalization circuits mechanisms 213 in next updates the 4 outputs 234 are used as diagnostic signals for the evaluations of whether the 4 propagation paths are equalized in amplitudes and phases and the optimization process generates the new parameters for the rf phase and amplitude compensations circuits mechanisms 213 as an example of two input signals a signal stream s1 t connected to port 1 of the 4 inputs 211 of the wf muxer 212 is spread into 4 channels with a unique spatial phase distribution or a wf while another signal stream s3 t connected to port 3.