发明名称 |
METHOD AND APPARATUS FOR SIGNAL-TO-NOISE RATIO CALCULATION IN RADIOCOMMUNICATION SYSTEMS USING MEASUREMENTS OF SUPERVISORY AUDIO TONES |
摘要 |
Methods and system for measuring signal noise of supervisory audio tones (SATs) in radiocommunication systems are disclosed. Exemplary embodiments involve extracting a real component from a received SAT signal, removing the SAT signal portion and examining the remainder to determine a noise component present in the SAT. The noise component can be compared with a signal strength measurement to obtain a signal-to-noise ratio. |
申请公布号 |
WO9719531(A1) |
申请公布日期 |
1997.05.29 |
申请号 |
WO1996SE01501 |
申请日期 |
1996.11.19 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
BAECKSTROEM, TOMAS;WAHLSTROEM, PETER;RYDE, OMAR |
分类号 |
H04B17/00;H04W40/24;(IPC1-7):H04B17/00 |
主分类号 |
H04B17/00 |
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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