| Original document(12 pages) 中文版 |
The invention is a fast, high-accuracy Doppler frequency bias estimating method for mobile communication system, utilizing unmodulated pilot fdop to compare with other auxiliary carrier frequency and adopting two CZT transforms in order; firstly making rough frequency bias estimation and then making fine frequency bias estimation, and by organic integration of the two frequency bias estimations, on the basis of finding rough estimated pilot value, reducing the searching range of the fine frequency bias estimation and increasing frequency resolution so as to obtain higher estimation accuracy on the premise of not increasing the operating quantity, implementing frequency bias estimation with high accuracy, high efficiency and large estimating range. By fast algorithm of CZT transform, it can largely shorten frequency bias estimating time, further increases frequency-domain detecting range and frequency resolution and obtains higher frequency bias estimating accuracy. And it is a frequency bias estimating method with strong practicality, able to be integrated in corresponding mobile communication system and implement high- efficiency and high-accuracy estimation on any Doppler frequency bias. |
Application Number
申请号 |
200610113795 |
Application Date
申请日 |
2006.10.17 |
| Title 名称 |
Quick, high-precision doppler frequency deviation estimating method |
Publication Number
公开号 |
1937607 |
Publication Date
公开日 |
2007.03.28 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
H04L27/26;H04L25/08 |
Applicant(s) Name
申请人 |
Beijing Post & Communication Univ. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
xiaxian fu |
| More information 更 多 信 息 |
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