发明名称 |
A channel assisted power control technique |
摘要 |
<p>A method is provided for determining the Doppler frequency shift that occurs in, the reception of a communication signal when the relative velocity between the transmitted and receiver is unknown. By estimating the channel characteristics and measuring the channel response to known transmitted data bits, a measure of the Doppler frequency is determined according to the method of the invention. In particular, a good estimate of the Doppler frequency shift is obtained based on a second order statistic of the fading process for the channel response to the known transmitted data bits. The approach is simple and general. It applies for any system such as WCDMA and CDMA 2000 when Doppler frequency is needed.</p> |
申请公布号 |
EP1182798(A1) |
申请公布日期 |
2002.02.27 |
申请号 |
EP20010301707 |
申请日期 |
2001.02.26 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
CHEN, TAI-ANN;LI, KAIPING;MEYERS, MARTIN HOWARD;QIU, ROBERT CAIMING;WEAVER, CARL FRANCIS |
分类号 |
H04L1/00;H04B7/005;H04B7/26;H04J13/00;(IPC1-7):H04B7/005 |
主分类号 |
H04L1/00 |
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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