发明名称 |
A METHOD OF AND APPARATUS FOR ESTIMATING A CHARACTERISTIC OF A SIGNAL |
摘要 |
This invention relates to a method of estimating a characteristic of a signal such as a time of arrival or a transmitter identity in particular in a cellular communication system. Most known techniques have limited performance as they rely on limited amounts of known data. The method of the invention comprises a first step (201) of receiving the signal at a subscriber unit. In a second step (203) the subscriber unit receives assistance data from the fixed network and in a third step (205) an expected signal is derived in response to this assistance data. For GSM the assistance data can be a frame number and a BSIC permitting an entire expected SCH burst to be derived. In a fourth (207) step the signal characteristic is determined by correlation of the received signal and the expected signal. The invention is particularly applicable to location determination in a GSM communication system.
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申请公布号 |
WO0069205(A1) |
申请公布日期 |
2000.11.16 |
申请号 |
WO2000EP04416 |
申请日期 |
2000.05.05 |
申请人 |
MOTOROLA LIMITED |
发明人 |
LOPES, LUIS;VILLIER, ERIC;LUDDEN, BRENDAN |
分类号 |
H04B7/26;G01S5/02;H04W64/00;(IPC1-7):H04Q7/38;G01S5/00 |
主分类号 |
H04B7/26 |
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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