发明名称 |
PROGRAMMABLE MATCHED FILTER SEARCHER |
摘要 |
A novel and improved method and apparatus for searching is described. Channe l data is despread utilizing a matched filter structure. The in-phase and quadrature amplitudes of the despreading (410) delivered to coherent accumulators (430, 432) to sum for a programmable duration of time. The amplitude accumulations are squared and summed (440) to produce an energy measurement. The energy measurement is accumulated for a second programmable time to perform non-coherent accumulation (450). The resulting value is used to determine the likelihood of a pilot signal at that offset. Each matched filter structure comprises an N-value shift register for receiving data, a programmable bank of taps to perform despreading and optional Walsh decovering, and an adder structure to sum the resulting filter tap calculations.
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申请公布号 |
CA2368982(A1) |
申请公布日期 |
2000.10.05 |
申请号 |
CA20002368982 |
申请日期 |
2000.03.30 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
ZOU, QIUZHEN;AGRAWAL, AVNEESH |
分类号 |
H04B1/707;(IPC1-7):H04B1/707 |
主分类号 |
H04B1/707 |
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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