Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform
Reexamination Certificate
2004-07-08
2009-11-17
Pham, Chi H. (Department: 2416)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Fourier transform
C370S310000, C370S334000, C375S346000, C455S218000
Reexamination Certificate
active
07619964
ABSTRACT:
Fast fading in cellular systems causes time variation of the Channel Impulse Response (CIR) resulting in significant performance degradation that is reduced by adding a pulse train to the transmitted data symbols and estimating the CIR by averaging the symbols as they vary from one OFDM symbol to another within the physical data frame (or packet).
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Olivier Jan C
Reid Tony
Son Jae H
Stolpman Victor
Harrington & Smith PC
Hom Shick
Nokia Corporation
Pham Chi H.
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