发明名称 |
DEFINING ADAPTIVE DETECTION THRESHOLDS |
摘要 |
A wireless device (24) receives a reference signal over a radio channel (21). The reference signal may be Positioning Reference Signals (PRS) and/or Common Referencing Signals (CRS), and may be transmitted from a transmitter (22). The wireless device (24) comprises a correlator (100); a reference signal detector (102); a threshold selector (106); and a reference signal analyzer (108). The correlator (100) use a signal received from the radio channel (21) and a replica of the reference signal to provide a correlator output value. The reference signal detector (102) compares the correlator output value with a threshold value to detect presence of a reference signal, and to estimate an arrival time of the reference signal. The threshold selector (106) adapts the threshold value to at least an estimate of a relative amount of noise and interference power in the received signal. |
申请公布号 |
WO2011073859(A3) |
申请公布日期 |
2011.12.01 |
申请号 |
WO2010IB55689 |
申请日期 |
2010.12.09 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);KANGAS, ARI;SIOMINA, IANA |
发明人 |
KANGAS, ARI;SIOMINA, IANA |
分类号 |
G01S5/02;H04B1/7075;H04L27/26 |
主分类号 |
G01S5/02 |
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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