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Widely linear FRESH receivers for cancellation of data-like rectilinear and quasi-rectilinear interference with frequency offsets
Signal Processing ( IF 4.4 ) Pub Date : 2021-05-31 , DOI: 10.1016/j.sigpro.2021.108171
Pascal Chevalier , Rémi Chauvat , Jean-Pierre Delmas

Widely linear (WL) receivers have been developed in the past for single antenna interference cancellation (SAIC) of one rectilinear (R) or quasi-rectilinear (QR) data-like multi-user interference (MUI) or co-channel interference (CCI) in particular. The SAIC technology has been implemented in global system for mobile communications (GSM) handsets in particular and has been further analyzed for voice services over adaptive multi-user channels on one slot (VAMOS) standard. It remains of great interest for several current and future applications using R or QR signals, such as anti-collisions processing in radio frequency identification (RFID) or in satellite-AIS systems and to densify 5G and Beyond 5G (B5G) networks through one dimensional signaling or over-loaded large MU-MIMO systems. It may be required to cancel the inter-symbol interference (ISI) of control and non-payload communications (CNPC) links of unmanned aerial vehicles (UAV) and the inter-carrier interference (ICI) of filter bank multi-carrier offset quadrature amplitude modulation (FBMC-OQAM), which are now candidate for B5G mobile networks. For these challenging applications, the development of enhanced WL filtering based SAIC or Multiple Antenna Interference Cancellation (MAIC) receivers for R and QR signals may be of great interest. Such a receiver, corresponding to a three-input WL frequency shift (FRESH) receiver, has been introduced recently for QR signals. However this WL receiver is not robust to a data-like MUI having a residual frequency offset (FO), which occurs for most of the previous applications. In this context, the paper first extends, for arbitrary propagation channels, the standards (for R and QR MUI) and the enhanced (for QR MUI) SAIC/MAIC WL receivers to MUI with a non-zero FO. Then, it shows the less efficiency of the two-input WL receiver for QR MUI with a non-zero FO and the performance improvement obtained with the three-input WL receiver. Finally, it analyzes, both analytically and by simulations, for R and QR MUI, the impact of the MUI FO on the performance of the proposed receivers. The results of the paper should allow the development of new powerful WL receivers for UAV CNPC links, anti-collisions AIS systems and for FBMC-OQAM networks in particular.



中文翻译:

宽线性 FRESH 接收器,用于消除具有频率偏移的类似数据的直线和准直线干扰

过去已经开发了宽线性 (WL) 接收器,用于一个直线 (R) 或准直线 (QR) 数据类多用户干扰 (MUI) 或同信道干扰 (CCI) 的单天线干扰消除 (SAIC) ) 特别是。SAIC 技术已在全球移动通信系统 (GSM) 手机中实施,并已进一步分析了单槽自适应多用户信道 (VAMOS) 标准上的语音服务。对于使用 R 或 QR 信号的几种当前和未来应用,例如射频识别 (RFID) 或卫星 AIS 系统中的防碰撞处理以及通过一维密集化 5G 和超 5G (B5G) 网络,它仍然具有极大的兴趣信令或过载的大型 MU-MIMO 系统。可能需要消除无人机(UAV)的控制和非有效载荷通信(CNPC)链路的符号间干扰(ISI)和滤波器组多载波偏置正交幅度的载波间干扰(ICI)调制 (FBMC-OQAM),现在是 B5G 移动网络的候选者。对于这些具有挑战性的应用,针对 R 和 QR 信号开发基于增强型 WL 滤波的 SAIC 或多天线干扰消除 (MAIC) 接收器可能会引起极大兴趣。这种接收器对应于三输入 WL 频移 (FRESH) 接收器,最近已被引入用于 QR 信号。然而,这种 WL 接收器对于具有残余频率偏移 (FO) 的类似数据的 MUI 并不稳健,这在大多数以前的应用中都会发生。在这种情况下,论文首先延伸,对于任意传播信道,标准(针对 R 和 QR MUI)和增强型(针对 QR MUI)SAIC/MAIC WL 接收器到具有非零 FO 的 MUI。然后,它显示了具有非零 FO 的 QR MUI 的两输入 WL 接收器的效率较低,以及使用三输入 WL 接收器获得的性能改进。最后,它通过分析和模拟来分析 R 和 QR MUI,MUI FO 对建议接收器性能的影响。该论文的结果应该允许为无人机 CNPC 链路、防碰撞 AIS 系统和特别是 FBMC-OQAM 网络开发新的强大的 WL 接收器。它显示了具有非零 FO 的 QR MUI 的两输入 WL 接收器的效率较低,并且使用三输入 WL 接收器获得了性能改进。最后,它通过分析和模拟来分析 R 和 QR MUI,MUI FO 对建议接收器性能的影响。该论文的结果应该允许为无人机 CNPC 链路、防碰撞 AIS 系统和特别是 FBMC-OQAM 网络开发新的强大的 WL 接收器。它显示了具有非零 FO 的 QR MUI 的两输入 WL 接收器的效率较低,并且使用三输入 WL 接收器获得了性能改进。最后,它通过分析和模拟来分析 R 和 QR MUI,MUI FO 对建议接收器性能的影响。该论文的结果应该允许为无人机 CNPC 链路、防碰撞 AIS 系统和特别是 FBMC-OQAM 网络开发新的强大的 WL 接收器。

更新日期:2021-06-14
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