Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2005-04-05
2010-02-23
Yao, Kwang B (Department: 2473)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S203000, C370S252000, C370S210000, C375S130000
Reexamination Certificate
active
07668075
ABSTRACT:
Embodiments of the invention provide a versatile system for selectively spreading carrier data across multiple carrier paths within an Orthogonal Frequency Division Multiplexing (OFDM) system, particularly an ultra-wideband (UWB) system. The present invention provides a data input, which passes data to a randomizer. The data then passes to a convolutional code function (206), the output of which is punctured by puncturing function. An interleaver function receives the punctured code data, and cooperatively operates with a mapper element to prepare the coded data for pre-transmission conversion by an IFFT. The mapper element comprises a dual carrier modulation function, which associates and transforms two punctured code data elements into a format for transmission on two separate signal tones.
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Balakrishnan Jaiganesh
Batra Anuj
Hosur Srinath
Brady W. James
Ngo Nguyen
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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