| Autor: |
Xiang Wen Yao, Zhi Xiang Shen, Cai Yao Shen, Yun Peng Hu |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Applied Mechanics and Materials. :3-8 |
| ISSN: |
1662-7482 |
| DOI: |
10.4028/www.scientific.net/amm.536-537.3 |
| Popis: |
In the signal combining system of deep space network, the estimation error of time-delay between signals will reduce the effectiveness. The time-delay alignment technique based on combined output signal as the reference (CC-SUMPLE algorithm) makes use of the mutual information offered by multi-antenna and improves the alignment performance. However, it only takes ordinary cross-correlation into consideration rather than the cyclostationary of digital communication signal during calculating time-delay in the iterative process. As to this problem, this paper proposes multi-antenna signal time-delay alignment algorithm based on cyclostationary of communication signal (MCCC-SUMPLE algorithm) which reconstructs the combined reference signal and takes advantage of multi-cycle frequencies. The simulation results show that the proposed algorithm will improve the estimation accuracy and time-delay alignment performance compared with CC-SUMPLE algorithm. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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