The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2011
Filed:
Feb. 22, 2008
Akinori Hashimoto, Tokyo, JP;
Yoichi Suzuki, Tokyo, JP;
Kazuyoshi Shogen, Tokyo, JP;
Shoji Tanaka, Tokyo, JP;
Hisashi Sujikai, Tokyo, JP;
Akinori Hashimoto, Tokyo, JP;
Yoichi Suzuki, Tokyo, JP;
Kazuyoshi Shogen, Tokyo, JP;
Shoji Tanaka, Tokyo, JP;
Hisashi Sujikai, Tokyo, JP;
Nippon Hoso Kyokai, Tokyo, JP;
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 apparatusgenerates 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 apparatusrewrites a phase error tableto calculate a phase error and performs synchronous detection according to the pilot signals. The receiving apparatusalso rewrites a likelihood tableto 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.