Vehicle mounted DSRC apparatus

Details Vehicle mounted DSRC apparatus Vehicle mounted DSRC apparatus

2007-03-06

2007-03-06

Kim, Kevin (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

C375S268000, C375S279000, C455S023000, C455S042000

Reexamination Certificate

active

10231288

ABSTRACT:
A vehicle mounted DSRC apparatus is capable of achieving reduction in the size and cost thereof. The vehicle mounted DSRC apparatus includes an ASK data generation part11, an I data generation part21, a Q data generation part22, a first band limiting filter23A for band limiting I data and ASK data, a second band limiting filter24for band limiting Q data, an ASK low pass filter12A for removing harmonic components from the ASK data, first and second low pass filters25, 26for removing harmonic components from QPSK data, an ASK modulator13for ASK modulating the ASK data, a QPSK modulator27for QPSK modulating the QPSK data, and a power amplifier30for amplifying output data of the ASK modulator13or the QPSK modulator27to a desired level thereby to output it to an antenna as an ASK modulated signal and a QPSK modulated signal.

REFERENCES:
patent: 5504774 (1996-04-01), Takai et al.
patent: 2003/0157888 (2003-08-01), Inoue
patent: 03-283743 (1991-12-01), None
patent: 08-102766 (1996-04-01), None
patent: 08-130490 (1996-05-01), None
patent: 2000-196690 (2000-07-01), None
patent: 2001-307162 (2001-11-01), None
“Quadrature Amplitude Modulation”, www.physics.udel.edu/wwwuers/watson/student—projects/scen167/thosgys/qam.html, pp. 1-2.

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