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:
Apr. 12, 2011
Filed:
Jul. 17, 2009
Akio Kurobe, Tondabayashi, JP;
Shigeo Yoshida, Takatsuki, JP;
Tomohiro Kimura, Hirakata, JP;
Yuji Igata, Chikushino, JP;
Masahiro Maki, Kasuya-gun, JP;
Toshiyuki Wakisaka, Iizuka, JP;
Hisao Koga, Chikushi-gun, JP;
Mutsuhiko Oishi, Iizuka, JP;
Akio Kurobe, Tondabayashi, JP;
Shigeo Yoshida, Takatsuki, JP;
Tomohiro Kimura, Hirakata, JP;
Yuji Igata, Chikushino, JP;
Masahiro Maki, Kasuya-gun, JP;
Toshiyuki Wakisaka, Iizuka, JP;
Hisao Koga, Chikushi-gun, JP;
Mutsuhiko Oishi, Iizuka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A communication network system sets communication parameters which enable an operation under a maximum possible communication rate in a situation where a transmission path has cyclic noise/impedance fluctuations. A transmission/reception apparatustransmits training packets for checking the state of the power line at two distinct points in time. A transmission/reception apparatus analyzes SNR at each carrier frequency, and stores an SNR evaluation result. The transmission/reception apparatus compares two SNR evaluation results which are obtained through two instances of a channel estimation algorithm, selects an SNR evaluation result which dictates a faster PHY rate, and transmits it to the transmission/reception apparatus. The transmission/reception apparatus changes modulation/demodulation rules based on the received SNR analytical result.