Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2003-12-24
2009-02-24
Nguyen, Brian (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C375S260000, C375S259000, C370S210000
Reexamination Certificate
active
07496028
ABSTRACT:
A signal transmission apparatus for minimizing a PAPR in an OFDM communication system. A subband divider divides L information data subcarrier signals into M subband signals. An additional information inserter inserts into the L information data subcarrier signals P additional information subcarrier signals. A dummy sequence inserter inserts the dummy sequence into a subband in the position. An IFFT block initially generates first and second OFDM symbol signals using M dummy sequence-free subband signals and M dummy sequence-inserted subband signals. A controller determines a sign bit value and an address bit value of the additional information when a PAPR value of the first OFDM symbol signal exceeds a predetermined PAPR threshold, and then performs a control operation of inserting the dummy sequence into a subband in a position corresponding to the address bit value so that the second OFDM symbol signal is transmitted over a downlink.
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Jung Ki-Ho
Ryu Heung-Gyooun
Yun Sung-Ryul
Nguyen Brian
Phung Luat
Samsung Electronics Co,. Ltd.
The Farell Law Firm, PC
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