Invention Grant
US07684502B2 Communication network system, and transmission/reception apparatus, method and integrated circuit for use therein
有权
通信网络系统以及其中使用的发送/接收装置，方法和集成电路
- Patent Title: Communication network system, and transmission/reception apparatus, method and integrated circuit for use therein
- Patent Title (中): 通信网络系统以及其中使用的发送/接收装置，方法和集成电路
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Application No.: US10895379Application Date: 2004-07-21
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Publication No.: US07684502B2Publication Date: 2010-03-23
- Inventor: Akio Kurobe , Shigeo Yoshida , Tomohiro Kimura , Yuji Igata , Masahiro Maki , Toshiyuki Wakisaka , Hisao Koga , Mutsuhiko Oishi
- Applicant: Akio Kurobe , Shigeo Yoshida , Tomohiro Kimura , Yuji Igata , Masahiro Maki , Toshiyuki Wakisaka , Hisao Koga , Mutsuhiko Oishi
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2003-280164 20030725; JP2004-152263 20040521
- Main IPC: H04K1/00
- IPC: H04K1/00 ; H04L27/28
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 apparatus transmits 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 evaluations 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.
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