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:
Dec. 11, 2007
Filed:
Jul. 30, 2004
Jun Cheng, Soraku-gun, JP;
Kenichi Miyoshi, Yokohama, JP;
Jun Cheng, Soraku-gun, JP;
Kenichi Miyoshi, Yokohama, JP;
Matsushita Electrical Industrial Co., Ltd., Osaka, JP;
Abstract
A wireless transmission apparatus that can accurately select an optimal modulation scheme on a per block basis in a multi-carrier communication system in which block division of subcarriers and adaptive modulation are performed. In this wireless transmission apparatus, a propagation path characteristics acquisition section () acquires the average SNR and SNR dispersion for each block, which are estimated by a wireless reception apparatus (), using received signals inputted from a reception RF section () and outputs these to an assignment section (), the assignment section () selects a modulation scheme for each block based on the average SNR and SNR dispersion of each block inputted from the propagation path characteristics acquisition section (), and modulation sections (---L) modulate multi-carrier signals included in each block, with the modulation scheme for each block selected by the assignment section ().