Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2008-04-29
2008-04-29
Pham, Chi (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S210000, C375S260000, C375S367000
Reexamination Certificate
active
07366090
ABSTRACT:
A method for generating a preamble sequence in an orthogonal frequency division multiplexing (OFDM) communication system having A subcarriers in a frequency domain. The method comprises generating a length-2×M×N preamble sequence, where 2×M×N is less than A, by using a length-N Golay complementary sequence and a length-M Golay complementary sequence; and assigning elements constituting the preamble sequence to 2×M×N subcarriers among the A subcarriers on a one-to-one mapping basis, assigning null data to the remaining subcarriers excluding the 2×M×N subcarriers from the A subcarriers, and then IFFT-transforming the assigned result into time-domain data.
REFERENCES:
patent: 2004/0109405 (2004-06-01), Suh et al.
Chae Chan-Byoung
Choi Ho-Kyu
Joo Pan-Yuh
Ro Jung-Min
Suh Chang-Ho
Boakye Alexander O.
Pham Chi
Samsung Electronics Co,. Ltd
The Farrell Law Firm PC
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