High Isolation Self-Interference Cancelation for Monostatic Simultaneous Transmit and Receive System
High Isolation Self-Interference Cancelation for Monostatic Simultaneous Transmit and Receive System
复制标题
单基地同步发射和接收系统的高隔离度自干扰消除
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
E. Alwan
中科院分区：
文献类型：
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作者：
M. N. Tarek;M. Roman;E. Alwan
无线技术正在快速发展，以满足不断增长的用户需求。目前，射频（RF）频谱过于拥挤，因此更容易受到信号自相残杀和干扰的影响。为了增强频谱接入，采用带内全双工系统来实现同时传输和接收（STAR），并使频谱效率成倍提高。然而，STAR 系统需要抑制可能泄漏到接收器链的高功率发射信号。据观察，发射机对接收机施加的干扰信号比所需的接收信号强大约 60–90 dB。这种类型的自干扰 (SI) 会显着降低接收器的动态范围，并常常导致其灵敏度降低。因此，成功的 STAR 实施需要发送器和接收器之间有相当大的隔离，以减少 SI 信号。
Wireless technology is growing at a fast rate to accommodate the expanding user demands. Currently, the radio frequency (RF) spectrum is overcrowded, hence more susceptible to signal fratricide and interference. To enhance spectrum access, in-band full duplex systems are implemented to achieve simultaneous transmission and reception (STAR) and doubleand double the spectral efficiency. However, STAR systems require suppression of the high power transmit signals that can leak to the receiver chain. It is observed that the interference signal imposed on the receiver by the transmitter is approximately 60–90 dB stronger than the desired received signal. This type of self-interference (SI) can significantly reduce the receiver’s dynamic range and often leads to its desensitization. Therefore, successful STAR implementation requires considerable isolation between the transmitter and receiver to reduce the SI signal.