发明名称 |
Digital modulating/demodulating apparatus and a digital demodulating apparatus |
摘要 |
A digital modulating/demodulating apparatus includes a demodulator for demodulating a modulated signal into a demodulated positional signal in response to a receipt of the modulated signal, a decoder for decoding the demodulated positional signal into a digital signal of N bits. A previous signal point on the constellation plane is defined by a previous demodulated positional signal and a current signal point on the constellation plane is defined by a current demodulated positional signal. The decoder outputs a digital signal of N bits, based on en amplitude and a phase of the previous signal point and the amplitude and the phase of the current signal point.
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申请公布号 |
US5535244(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19940252902 |
申请日期 |
1994.06.02 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAKATSU, ETSUTO;HIGASHITANI, HIROSHI;OHTA, HARUO |
分类号 |
H04L27/38;(IPC1-7):H04L5/12 |
主分类号 |
H04L27/38 |
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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