发明名称 |
Synchronization detection system for data transmission |
摘要 |
A synchronization detecting system for data transmission in which a two-dimensionally modulated signal is received by way of a demodulator. In a training sequence for a two-dimensional modulation modem, a point of transition from an alternation to a pseudorandom symbol sequence is detected by producing a sum of the vectors of two signals which are remote from each other by a period of two samples, or a difference therebetween. Whether the detection of the transition point has been correct is decided utilizing the alternation.
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申请公布号 |
US4608703(A) |
申请公布日期 |
1986.08.26 |
申请号 |
US19840608625 |
申请日期 |
1984.05.09 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
KAGA, MITSURU;TANAKA, SHIGETAKA |
分类号 |
H04L7/04;H04L27/38;(IPC1-7):H04L7/04;H04L23/02 |
主分类号 |
H04L7/04 |
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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