发明名称 |
METHOD, DEVICE, AND RADIO FOR COMPENSATING FOR MODULATOR FREQUENCY DRIFT WHILE ALLOWING FOR DATA TRANSMISSION |
摘要 |
A method (100), a device (300), and a radio (500) are described for compensating for modulator frequency drift while allowing for data transmission in a half-duplex frequency modulated communication system. An adjustment is made to a premodulation signal in such a way that when it is passed through a frequency modulator to provide a transmitter excitation signal, frequency drift is corrected. Subsequent to determining a training command, the transmitter excitation signal passes through a switch to a demodulator. The demodulator output is averaged and used in the adjustment.
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申请公布号 |
WO9618250(A1) |
申请公布日期 |
1996.06.13 |
申请号 |
WO1995US12108 |
申请日期 |
1995.09.25 |
申请人 |
MOTOROLA INC. |
发明人 |
OPAS, GEORGE, FRANCIS;DEGROOT, ROBERT, JOSEPH |
分类号 |
H03C3/02;H04B1/04;H04L5/16;H04L27/12;(IPC1-7):H04K1/02;H01Q11/12 |
主分类号 |
H03C3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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