Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2011-08-16
2011-08-16
Pham, Brenda (Department: 2464)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S314000
Reexamination Certificate
active
08000220
ABSTRACT:
To provide a digital data transmitting apparatus and a digital data receiving apparatus that can realize, even when a transmission channel characteristic changes because of aged deterioration or the like of a relay, improvement of a reception performance following the change.A transmitting apparatus1generates a multiplexing frame formed by N slots including control information, data, outer parities, stuff bits, and inner parities and added with synchronization, pilot, and a transmission control signal and a parity and transmits data of the respective slots in a transmission system designated by the transmission control signal. In this case, pilot signals are symbols allocated to all signal points in order determined in advance for each of modulation schemes. A receiving apparatus2rewrites a phase error table214to calculate a phase error and performs synchronous detection according to the pilot signals. The receiving apparatus2also rewrites a likelihood table235to perform inner code decoding. Consequently, since reception processing adapted to distortion of a transmission channel characteristic can be performed, improvement of a reception performance can be realized.
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International Search Report, PCT/JP2008/053077, Mailed Apr. 15, 2008.
Hashimoto Akinori
Shogen Kazuyoshi
Sujikai Hisashi
Suzuki Yoichi
Tanaka Shoji
Engellenner Thomas J.
Moilaghababa Reza
Nippon Hoso Kyokai
Nutter McClellen & Fish LLP
Pham Brenda
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