发明名称 |
Method for frequency offset estimation in a direct sequence spread spectrum communications receiver |
摘要 |
A method of estimating the difference in frequency between base station transmissions received over a radio channel and a locally generated carrier frequency in a mobile receiver. The differential phase shifts imparted to different parts of a received synchronization code because of a frequency offset of the local reference oscillator are detected in the receiver. A series of partial correlations of the received synchronization code over a single transmission slot allows detection of the differential phase shifts. Signal to noise ratios may be improved by means of a series of overlapping partial correlations. The period over which the correlations are performed is much less than the coherence time of the radio channel. |
申请公布号 |
AU3409101(A) |
申请公布日期 |
2001.08.27 |
申请号 |
AU20010034091 |
申请日期 |
2001.02.19 |
申请人 |
NEC CORPORATION |
发明人 |
MAJID BOLOORIAN |
分类号 |
H04B1/707;H04L7/00;H04L27/00 |
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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