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. 15, 2002
Filed:
Feb. 09, 1998
Kenneth A. Stewart, Rolling Meadows, IL (US);
Yi Qiao, Chicago, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Joint detection of data signals occurs in a code division, multiple access (CDMA) communication system as follows: A digital signal processor ( ) first extracts a midamble portion of transmitted signal vectors and generates an estimate of the channel response corresponding to each user-antenna pair using a channel estimator ( ). In the preferred embodiment, each user's transmission within the communication system comprises either the type-1 or type-2 burst with varying midamble and guard period durations. Next, a convolution processor ( ) forms the convolution of the user signature sequence with the channel impulse response estimate associated with each user and each of the antennas ( )-( ). A detector ( ) utilizes the set of vectors and creates a set of sub-system matrices and solves the sub-system matrices to extract symbol information from an individual remote unit's transmission. Finally, the detector ( ) outputs symbol information for subsequent infrastructure processing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile