发明名称 |
Compact superposed modulated signal generator |
摘要 |
A compact superposed modulated signal generator for use in a digital transmission system for transmitting digital information, including a first filter for converting an input NRZ digital data signal into a double interval raised cosine pulse, a second filter for converting the input NRZ digital data into a single interval raised cosine pulse, an attenuator for attenuating the signal output from the second filter, an adder/subtracter for superposing a signal generated by the first filter with a signal controlled by the attenuator, and a third filter for controlling the bandwidth of a signal superposed by the adder/subtracter. The compact superposed modulated signal generator can be used in a satellite communication system, a mobile radio system, and terrestrial microwave communication links.
|
申请公布号 |
US5313494(A) |
申请公布日期 |
1994.05.17 |
申请号 |
US19910796619 |
申请日期 |
1991.11.22 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PARK, IL-GEUN;SEO, JONG-SU |
分类号 |
H03H17/02;H04L25/03;H04L27/00;(IPC1-7):H04L27/04;H04L27/12;H04L27/20 |
主分类号 |
H03H17/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|