Pulse or digital communications – Transmitters
Reexamination Certificate
2011-04-12
2011-04-12
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Transmitters
C375S260000, C375S219000, C370S204000
Reexamination Certificate
active
07924940
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 apparatus100transmits 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.
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Igata Yuji
Kimura Tomohiro
Koga Hisao
Kurobe Akio
Maki Masahiro
Ghebretinsae Temesghen
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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