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Precoded GFDM system for self-interference mitigation

机译:预编码的GFDM系统可缓解干扰

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摘要

Generalised frequency division multiplexing (GFDM) is a multicarrier transmission scheme that offers a flexible framework to address diverse requirements of fifth generation of cellular networks. Compared to orthogonal frequency division multiplexing (OFDM), the application of pulse shaping in GFDM can control the out of band (OOB) radiation and enables relaxed synchronisation requirements. However, the sub-carriers in GFDM are no longer orthogonal and there is inherent interference. Since this interference is known at the transmitter, it can be mitigated by means of precoding techniques. In this paper, Tomlinson-Harashima precoding (THP) scheme is applied to GFDM transceiver and its performances is compared to previous methods in terms of bit error rate (BER) and peak to average power ratio (PAPR). The results show that the proposed precoder outperforms previous methods in both BER and PAPR.
机译:通用频分复用(GFDM)是一种多载波传输方案,可提供灵活的框架来满足第五代蜂窝网络的各种要求。与正交频分复用(OFDM)相比,GFDM中脉冲整形的应用可以控制带外(OOB)辐射,并实现宽松的同步要求。但是,GFDM中的子载波不再正交,并且存在固有干扰。由于这种干扰在发射机处是已知的,因此可以通过预编码技术减轻它。本文将Tomlinson-Harashima预编码(THP)方案应用于GFDM收发器,并在误码率(BER)和峰均功率比(PAPR)方面将其性能与以前的方法进行了比较。结果表明,所提出的预编码器在BER和PAPR方面均优于先前的方法。

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