19.2 A self-interference-cancelling receiver for in-band full-duplex wireless with low distortion under cancellation of strong TX leakage
19.2 A self-interference-cancelling receiver for in-band full-duplex wireless with low distortion under cancellation of strong TX leakage
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19.2 一种用于带内全双工无线的自干扰消除接收机，在消除强 TX 泄漏的情况下具有低失真
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Nauta
中科院分区：
文献类型：
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作者：
D. V. D. Broek;E. Klumperink;B. Nauta
带内全双工（FD）无线通信，即在同一信道中以相同频率同时发送和接收，承诺高达2倍的频谱效率，沿着在更高的网络层中具有优势[1]。主要的挑战是处理从发射机到接收机的强带内泄漏（即，自干扰（SI）），因为TX功率通常比要接收的最弱信号强>100dB，从而需要TX-RX隔离和SI消除。如果可能的话，仅在数字域中执行这种SI消除将需要非常干净（低EVM）的传输以及RX和ADC中的巨大动态范围，这在目前是不可行的[2]。完全以模拟方式消除SI也是不可行的，因为SI包含由环境反映的延迟的TX分量。消除这些需要不切实际的大量可调模拟延迟。因此，迄今为止提出的FD解决方案将RF处的SI抑制、模拟BB、数字BB和跨域结合了联合收割机。
In-band full-duplex (FD) wireless communication, i.e. simultaneous transmission and reception at the same frequency, in the same channel, promises up to 2x spectral efficiency, along with advantages in higher network layers [1]. the main challenge is dealing with strong in-band leakage from the transmitter to the receiver (i.e. self-interference (SI)), as TX powers are typically >100dB stronger than the weakest signal to be received, necessitating TX-RX isolation and SI cancellation. Performing this SI-cancellation solely in the digital domain, if at all possible, would require extremely clean (low-EVM) transmission and a huge dynamic range in the RX and ADC, which is currently not feasible [2]. Cancelling SI entirely in analog is not feasible either, since the SI contains delayed TX components reflected by the environment. Cancelling these requires impractically large amounts of tunable analog delay. Hence, FD-solutions proposed thus far combine SI-rejection at RF, analog BB, digital BB and cross-domain.