| 同时同频全双工射频快速自适应干扰抵消算法 |
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| 引用本文： | 王俊,赵宏志,唐友喜.同时同频全双工射频快速自适应干扰抵消算法[J].电子科技大学学报（自然科学版）,2017,46(4):505-512. |
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| 作者姓名： | 王俊 赵宏志 唐友喜 |
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| 作者单位： | 1.西南民族大学电气信息工程学院 成都 610041 |
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| 基金项目： | 国家自然科学基金61531009国家自然科学基金61501093国家自然科学基金61271164国家自然科学基金61471108中央高校基本科研业务费专项ZYGX2014Z011 |
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| 摘 要： | 在同时同频全双工收发信机中，考虑单径无线自干扰信道场景，提出了基于快速搜索思想的射频自适应干扰抵消算法。通过分析自干扰幅度估计误差、相位估计误差对射频自干扰抵消后剩余接收信号功率的影响，引出了射频域的快速自适应干扰抵消算法，并讨论了该算法的收敛性。分析与仿真表明，在同时同频全双工系统中，基于快速搜索的射频自适应干扰抵消算法可以有效实现射频域自干扰的抵消；与现有的射频自适应干扰抵消方法相比，其收敛时间减少了约60%。
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| 关 键 词： | 自适应干扰抵消 全双工 快速搜索 射频自干扰 |
| 收稿时间： | 2016-05-03 |
Quick Adaptive Self-Interference Cancellation at RF Domain in Full Duplex Systems |
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| Affiliation: | 1.College of Electrical and Information Engineering, Southwest University for Nationalities Chengdu 6100412.National Key Lab of Science and Technology on Communications, University of Electronic Science and Technology of China Chengdu 611731 |
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| Abstract: | In a full-duplex transceiver which transmits and receives at the same frequency simultaneously, a radiofrequency (RF) adaptive self-interference cancellation algorithm based on quick search is proposed to cancel the single path self-interference. By analyzing the impact of the magnitude and phase estimation errors on the residual received signal power after the self-interference cancellation, the RF quick adaptive self-interference cancellation algorithm is derived, and its convergence performance is discussed. By analysis and simulation, the RF adaptive self-interference cancellation algorithm based on quick search can effectively cancel the self-interference at the RF domain, and its convergence time decreases by 60% compared with the existing RF adaptive self-interference canceller. |
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