发明名称 |
DIFFERENTIAL CODING SYSTEM AND METHOD |
摘要 |
A differential coding system and method for use in a data communications system employing phase ambiguous coherent detection. The system and method includes differentially encoding a plurality of dibits through a plurality of differential encoders and corresponding outputs of the encoders into new dibit combinations before converting the new combinations to analog signals for transmission. In the receiving decoder, the process is reversed to recover the original dibits.
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申请公布号 |
US3666890(A) |
申请公布日期 |
1972.05.30 |
申请号 |
USD3666890 |
申请日期 |
1970.11.27 |
申请人 |
AMERICAN DATA SYSTEMS INC. |
发明人 |
FRED B. WADE |
分类号 |
H04L25/48;H04L27/02;H04L27/34;(IPC1-7):H04J3/04 |
主分类号 |
H04L25/48 |
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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