Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Reexamination Certificate
2007-01-09
2007-01-09
To, Doris H. (Department: 2616)
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
Reexamination Certificate
active
10127190
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.
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Chen Kwang-Cheng
Wu Shan-Tsung
Hoang Thai
Mediatek Inc.
Thomas Kayden Horstemeyer & Risley
To Doris H.
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