Blind Nonlinear Compensation for RF Receiver Employing Sub-Nyquist Sampling A/D Conversion

K. Kimura, Y. Yamao
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Abstract

Blind nonlinear compensation for RF receiver is an important research topic in 5G mobile communication in which concurrent multi-band signals are employed to enable multi-access in heterogeneous networks. Since a nonlinear compensator processes intermodulation bandwidth of more than three times of signal bandwidth, reduction of power consumption is essential. This paper proposed a novel nonlinear compensation technique for receivers, which employs sub-Nyquist sampling A/D conversion. By folding outband spectrum, it achieves similar compensation performance while reducing the sampling speed of A/D converter to less than half of the normal sampling.
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基于亚奈奎斯特采样A/D转换的射频接收机盲非线性补偿
射频接收机的盲非线性补偿是5G移动通信中的一个重要研究课题,5G移动通信采用并发多频段信号实现异构网络中的多址接入。由于非线性补偿器处理的互调带宽超过信号带宽的三倍,因此降低功耗是必不可少的。提出了一种新型的接收机非线性补偿技术,该技术采用亚奈奎斯特采样a /D转换。通过折叠带外频谱,在将A/D转换器的采样速度降低到正常采样速度的一半以下的同时,实现了类似的补偿性能。
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