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:
Jul. 01, 2008
Filed:
Apr. 05, 2004
Haiyun Tang, Saratoga, CA (US);
Karim Toussi, Belmont, CA (US);
Ahmad Bahai, Lafayette, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
Apparatus and method for generating signal gain coefficients for use in packet data communication between a single-input-single-output (SISO) transceiver and a single-input-multiple-output/multiple-input-single-output (SIMO/MISO) transceiver. Coordinate rotation digital computation (CORDIC) techniques are used to generate transmit channel coefficients which are substantially complementary to receive channel coefficients representing relative strengths of individual signals received via multiple spatially diverse antenna elements and corresponding to a wireless data signal originating from a particular SISO radio frequency (RF) transceiver. Using such transmit channel coefficients to produce outgoing RF signals for transmission via the same antenna elements and reception by such particular SISO RF transceiver provides for signal transmission and reception diversity.