The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2006
Filed:
Mar. 22, 2004
Ron Rotstein, Arlington Heights, IL (US);
Robert J. Corke, Glen Ellyn, IL (US);
Arie Z. Schwartzman, Palatine, IL (US);
Ron Rotstein, Arlington Heights, IL (US);
Robert J. Corke, Glen Ellyn, IL (US);
Arie Z. Schwartzman, Palatine, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for communicating in an OFDM system whereby data subcarriers associated with a first antenna of at least two transmit antennas are multiplexed with data symbols while modulating other subcarriers associated with other antennas with zero. The data subcarriers are separated between the at least two transmit antennas so that a data subcarrier and a mirror data subcarrier are not transmitted from a same transmit antenna and that adjacent data subcarriers are at least two subcarrier frequency bandwidths apart. In an embodiment, the method and apparatus further comprise receiving the transmitted subcarriers from at least two receive antennas where the transmitted data subcarriers are also separated so that the data subcarrier and the mirror data subcarrier are not received from a same receive antenna of the at least two receive antennas. The method and apparatus further comprises combining the received transmitted subcarriers from the at least two receive antennas into a single data stream.