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:
Jan. 13, 2009
Filed:
Dec. 20, 2006
Fan Wang, Chicago, IL (US);
Lawrence A. Downing, Hoffman Estates, IL (US);
Amitava Ghosh, Buffalo Grove, IL (US);
Chandrasekar Sankaran, Arlington Heights, IL (US);
Jun Tan, Lake Zurich, IL (US);
Fan Wang, Chicago, IL (US);
Lawrence A. Downing, Hoffman Estates, IL (US);
Amitava Ghosh, Buffalo Grove, IL (US);
Chandrasekar Sankaran, Arlington Heights, IL (US);
Jun Tan, Lake Zurich, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A radio communications device () that has multiple receive antennas processes received data communications signals to select between space time coding and spatial multiplexing as a selected transmission technique from a base device () that has multiple transmit antennas. A channel throughput (--) for each transmission technique is estimated based on signal to interference and noise ratios (--) of signals being transmitted through a MIMO channel () as measured by a receiver (). The transmission technique with the higher estimated throughput is determined. If spatial multiplexing is determined to have the higher estimated throughput and the throughput of each layer of the spatially multiplexed signal is greater than a threshold, spatial multiplexing is selected. Otherwise, space time coding is selected.