A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. The plasma panel offers high brightness and luminous efficiency. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes. The lid and bottle are removably attachable in a manner opening and closing access into an interior of the bottle. A simple and easy to manufacture centrifugal pump impeller and housing are shown. For example, the user may specify various aspects of the execution environment or execution location for the subsequence.