发明名称 |
Pulse-shaping look-up table with transient suppression |
摘要 |
The pulse-shaping look-up table with transient suppression (530) avoids hard turn-on and turn-off transients by modifying word segments of initial and final digital words during transmission of a digital data sequence. A controller (570) sends a mode signal and a digital data sequence to the pulse-shaping look-up table with transient suppression (530). A mode buffer and command block (560) uses the mode signal to control the creation of initial and final digital words created by a data buffer and control block (550) from the digital data sequence. The digital words are used by a look-up table (540) to create a sampled digital output waveform sequence. The pulse-shaping look-up table with transient suppression (530) provides an accurate output waveform sequence with reduced spectral emissions even during start-up and shut-down of digital data transmissions.
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申请公布号 |
US6144862(A) |
申请公布日期 |
2000.11.07 |
申请号 |
US19980124208 |
申请日期 |
1998.07.28 |
申请人 |
MOTOROLA, INC. |
发明人 |
OLIVER, JOHN P.;BAKER, JAMES C.;JANSSEN, JOHN J. |
分类号 |
H04L25/03;(IPC1-7):H04Q7/32 |
主分类号 |
H04L25/03 |
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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