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:
Oct. 30, 2007
Filed:
Oct. 11, 2002
Roger Stenerson, Sunnyvale, CA (US);
Weimin Zhang, San Jose, CA (US);
Roger Stenerson, Sunnyvale, CA (US);
WeiMin Zhang, San Jose, CA (US);
Broadlogic Network Technologies, Inc., San Jose, CA (US);
Abstract
A system for implementing a base band compression scheme for a nonlinear multiplying up-converter for QPSK and OQPSK includes a bit combining module, a quadrant remap module, a look-up table (LUT) and a zoom adjust module. The bit combining module is configured to generate an address based on a number of symbols received as input data. Using the address provided by the bit combining module, the quadrant remap module remaps symbols from quadrants '2', '3' and “4” to quadrant “1” and generates signals to look up corresponding output data from the LUT. The zoom adjust module generates a number of solutions corresponding to the input data using the corresponding output data retrieved from the LUT. The zoom adjust module is then used to select the best output from the solutions to provide a smooth output signal that does not have any discontinuities.