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. 09, 2007
Filed:
Apr. 09, 2002
Shan-tsung Wu, Taipei, TW;
Kwang-cheng Chen, Hsinchu, TW;
Shan-Tsung Wu, Taipei, TW;
Kwang-Cheng Chen, Hsinchu, TW;
Mediatek Inc., Hsinchu, TW;
Abstract
A system and a method for deriving transmitted signals from multiple users for an OFDM-CDMA communication system are described herein. An optimum synchronizer for use in an OFDM-CDMA system is also provided. In one aspect, the system and method incorporate a programmable structure for different OFDM-CDMA systems (e.g., MC-CDMA, MC-DS-CDMA, and MT-CDMA) that can be efficiently implemented. The programmable structure is based on the linear minimum mean square error (LMMSE) or best linear unbiased estimator (BLUE) techniques. In addition, an efficient algorithm for reducing computations of fast Fourier transform (FFT) is presented.