A high performance multi-band antenna reflector having low sidelobe and cross polarization levels, and a superior carrier-to-interference ratio has two concentric zones. The disclosure also provides process of preparation of these acetamide derivatives. An arm, finger and cam extend outwardly from each end of the assembly to provide spacing between each end of the assembly and a desired surface for various sets of same-width balusters. The trust relationship is based on a trust relationship between the first supporting node and the second supporting node. The multiple data stream transmission method of the present invention comprises: receiving a plurality of data streams from a source node; decoding the plurality of data streams received; selecting a portion of the successful decoded data streams; encoding the selected portion of the data streams; and sending the encoded data stream portion to a destination node.