发明名称 |
FUNKBASISSTATION MIT MEHREREN FUNKFREQUENZKÖPFEN |
摘要 |
A radio base station has a baseband unit (BB) and multiple RF heads (RH1, RH2), which are interconnected by means of a bi-directional two-fiber optical ring (R). Each RF head (RH1, RH2) has a delay counter (31) for determining a propagation delay (tL) on the ring (R) and a variable delay circuit (16, 26) for compensating a difference between the propagation delay (tL) on the ring and a predefined target delay (tRR). The delay counter counts (31) the delay between a test signal sent on the first fiber (F1) of the ring to the baseband unit (BB) and a received test signal looped back by the baseband unit (BB) on the second fiber (F2) of the ring. <IMAGE> |
申请公布号 |
AT364970(T) |
申请公布日期 |
2007.07.15 |
申请号 |
AT20040290047T |
申请日期 |
2004.01.08 |
申请人 |
EVOLIUM S.A.S. |
发明人 |
LANGE, KELD;SULZBERGER, UWE |
分类号 |
H04B10/08;H04B10/12;H04B10/20;H04B10/213;H04W88/08 |
主分类号 |
H04B10/08 |
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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