Abstract—Arandombeamforming(RBF)techniqueisproposedtoachieveomnidirectionalcoverageforbroadcastchannelsinmultipleantennasystems.Intheproposedscheme,thetimeandfrequencyresourcesforcommunicationaredividedintomanytime–frequencyblocks(TFBs).ArandompatternisemployedoneachTFB,withtheaveragepow