发明名称 |
KOMMUNIKATIONSBASISSTATION MIT AUTOMATISCHER KABELDÄMPFUNGSKOMPENSATION |
摘要 |
A wireless communications systems employing code-division multiple access information transmission techniques includes a transmission facility having ground-based transmission and reception electronic equipment, a remotely located RF power amplifier, an antenna, and an RF cable connecting the ground-based equipment with the remotely located RF power amplifier. Power level detectors in the ground-based equipment and in the remotely located RF power amplifier measure the signal level at each end of the RF cable. A microcontroller compares these measurements and adjusts a variable attenuator in the transmission signal path and a variable attenuator in the received signal path to compensate for signal level variability due to variations in signal loss. |
申请公布号 |
DE69912001(D1) |
申请公布日期 |
2003.11.13 |
申请号 |
DE1999612001 |
申请日期 |
1999.12.23 |
申请人 |
INTERDIGITAL TECHNOLOGY CORP., WILMINGTON |
发明人 |
BIRD, JOHN;KAZAKEVICH, LEONID |
分类号 |
H03G3/30;H04B1/04;H04B1/40;H04B3/08;H04B3/36;H04B7/26;H04B17/00;H04W88/08;(IPC1-7):H04B3/36;H04Q7/30 |
主分类号 |
H03G3/30 |
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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