Widely linear FRESH receivers for cancellation of data-like rectilinear and quasi-rectilinear interference with frequency offsets

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