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. 02, 2006
Filed:
Oct. 14, 2004
Rajiv Laroia, Basking Ridge, NJ (US);
Junyi LI, Somerset, NJ (US);
Sundeep Rangan, Jersey City, NJ (US);
Murari Srinivasan, Palo Alto, CA (US);
Frank A. Lane, Asbury, NJ (US);
Prashanth Hande, Jersey City, NJ (US);
Rajiv Laroia, Basking Ridge, NJ (US);
Junyi Li, Somerset, NJ (US);
Sundeep Rangan, Jersey City, NJ (US);
Murari Srinivasan, Palo Alto, CA (US);
Frank A. Lane, Asbury, NJ (US);
Prashanth Hande, Jersey City, NJ (US);
Flarion Technologies, Inc., Bedminster, NJ (US);
Abstract
Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.