Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Reexamination Certificate
2011-04-12
2011-04-12
Afshar, Kamran (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
C370S328000, C370S335000, C370S338000, C455S452100, C455S296000
Reexamination Certificate
active
07924799
ABSTRACT:
A radio communications device includes a transmitter, a receiver, a propagation detecting unit, and a symbol rate setting unit. The receiver has a plurality of antennas, a plurality of transmitting circuits, and a transmission signal processing circuit. The transmission signal processing circuit has a modulator, and modulates data input transmission data in modulator to output the modulated data as transmission signal to the transmitting circuits. The receiver has a plurality of antennas, a plurality of receiving circuits, and a reception signal processing circuit. The reception signal processing circuit has a demodulator, demodulates reception signals input from the receiving circuits in demodulator to generate reception data. The propagation detecting unit detects propagation state of radio waves. The symbol rate setting unit selects a symbol to be communicated from a plurality of symbol rates based on the detected propagating state and sets the selected symbol rate to the modulator and to the demodulator.
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Maruhashi Kenichi
Shimawaki Hidenori
Afshar Kamran
NEC Corporation
Sughrue & Mion, PLLC
Wang-Hurst Kathy
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