发明名称 |
Digital transmission system with data rate optimized for noise in transmission medium |
摘要 |
A cable transmission system transmits television signals in a family of M-level symbol data constellations. Lower frequency ones of the television signals are transmitted in data constellations of relatively higher values of M and higher frequency ones of the television signals are transmitted in data constellations of relatively lower values of M to optimize signal to noise performance and spectrum utilization.
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申请公布号 |
US5452009(A) |
申请公布日期 |
1995.09.19 |
申请号 |
US19930175014 |
申请日期 |
1993.12.29 |
申请人 |
ZENITH ELECTRONICS CORP. |
发明人 |
CITTA, RICHARD W. |
分类号 |
H03M13/27;H04N7/10;H04N7/24;H04N7/64;(IPC1-7):H04N7/04 |
主分类号 |
H03M13/27 |
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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