Phase noise introduced by oscillators shows significant impacts on full-duplex (FD) transceivers, even for the architecture in which the transmitter and receiver share the same oscillator. In this paper, an FD transceiver design is proposed to mitigate the phase noise contained in the multipath self-interference (SI) components. This design is featured by deploying two receive chains whose oscillator signals are originated from the transmit oscillator signal but with different delays. To work with the proposed design, an SI cancellation algorithm is developed, where the phase noise contained in the multipath SI components are extracted by dividing the two received signals. The cancellation capabilities of the proposed transceiver, as well as two typical conventional transceivers, are derived in closed-forms. The impacts of oscillator delay adjustment errors and SI channel estimation errors on the cancellation capability are also analyzed to reveal guidelines for FD transceiver designs. Simulation results show that the proposed transceiver design can expand the transmission power and relax the requirement for the analog canceller, which shows advantages in the long-range communication with high transmission power, or in the scenario where analog cancellations are not applicable.

中文翻译：

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存在相位噪声的全双工收发器设计与性能分析

振荡器引入的相位噪声对全双工（FD）收发器产生了重大影响，即使对于发送器和接收器共享同一振荡器的体系结构也是如此。本文提出了一种FD收发器设计，以减轻多径自干扰（SI）组件中包含的相位噪声。这种设计的特点是部署了两个接收链，这些接收链的振荡器信号源自发射振荡器信号，但具有不同的延迟。为了与提出的设计一起工作，开发了一种SI消除算法，其中通过对两个接收信号进行划分来提取多径SI分量中包含的相位噪声。所提出的收发器以及两个典型的常规收发器的消除能力以封闭形式导出。还分析了振荡器延迟调整误差和SI信道估计误差对抵消能力的影响，以揭示FD收发器设计的准则。仿真结果表明，所提出的收发器设计可以扩展传输功率，并放宽对模拟抵消器的要求，这在具有高传输功率的远程通信中或在模拟抵消不适用的情况下显示出优势。