Multiplex communications – Generalized orthogonal or special mathematical techniques
Reissue Patent
2005-11-23
2008-11-11
Duong, Frank (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S208000, C370S350000, C375S355000
Reissue Patent
active
RE040568
ABSTRACT:
The present invention proposes a method for generating synchronization bursts for OFDM transmission systems. The symbols of a predefined symbol sequence are mapped according to a predefined mapping scheme on subcarriers of the OFDM systems by a mapping unit (2), wherein the symbols of the predefined symbol sequence represent subcarriers of the OFDM system with nonzero amplitudes. A synchronization burst is generated by a inverse fast Fourier transforming unit (3) transforming the subcarriers of the OFDM system mapped to said predefined symbol sequence. The mapping (2) of the symbols of the predefined symbol sequence is set such that the resulting time domain signal of the synchronization burst represents a periodic nature. According to the invention the predefined symbol sequence is set such that the envelope fluctuation of the time domain signal of the synchronization burst is minimized. Therefore advantageous symbol sequences reducing said the envelope fluctuation of the time domain signal are proposed.
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Böhnke Ralf
Dölle Thomas
Puch Tino
Duong Frank
Frommer William S.
Frommer & Lawrence & Haug LLP
Sony Corporation
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