【作者】 卿施军； 向乾尹； 李惠民； 冯全源；

【Author】 Shijun Qing;Qianyin Xiang;Huimin Li;Quanyuan Feng;Southwest Jiaotong University;

【机构】 西南交通大学；

【摘要】 针对射频自干扰对消系统抽头系数的调控问题,本文开展了基于GNURadio和B210软件无线电硬件平台的射频自干扰对消硬件闭环调控技术研究。建立了自干扰系统校准、优化算法及硬件控制。针对射频全双工系统中环形器收发泄漏,采用了基于非对称功分的低成本射频自干扰对消硬件进行了验证,在900-925MHz频段,实现了65d B的隔离,隔离度提升了40 dB。更多还原

【Abstract】 Aiming at the control problem of the tap coefficient of the RF self-interference cancellation(RF-SIC) system, this paper conducts research on the closed-loop control technology of the RF-SIC hardware based on the GNU Radio and B210 software radio hardware platforms.The self-interference system calibration, optimization algorithm and hardware control are established. Aiming at the leakage of the circulator in the RF full-duplex system, the low-cost RFSIC hardware based on asymmetric power splitter is used for verification. From 900 MHz to 925MHz, 65dB isolation is achieved, and the isolation degree is improved by 40dB.更多还原