Mosayebi, RezaMojahedian, Mohammad MahdiLozano Solsona, Angel2021-06-152020Mosayebi, Mojahedian MM, Lozano A. Parallel interference cancellation for Cell-Free C-RANs. In: Matthews MB, editor. 54th Asilomar Conference on Signals, Systems and Computers; 2020 Nov 1-4; California, USA. New Jersey: IEEE; 2020. p. 554-8. DOI: 10.1109/IEEECONF51394.2020.94432691058-6393http://hdl.handle.net/10230/47888Comunicació presentada al 54th Asilomar Conference on Signals, Systems and Computers, celebrat de l'1 al 4 de novembre de 2020 a California, Estats Units.This paper formulates a linear receiver for the uplink of centralized, possibly cloud-based, radio access networks operating in a cell-free fashion. This receiver, which draws on the notion of soft parallel interference cancellation, exhibits substantial interference rejection abilities, yet it does not involve any matrix inversions. Its computational cost is hence decidedly inferior to that of an MMSE receiver, but its performance is markedly superior to that of matched-filter beamforming. And, with an adequate sparsification of the channel matrix that it derives from, the proposed receiver can be rendered scalable in the sense of its computational cost per access point not growing with size of the network.application/pdfeng© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. http://dx.doi.org/10.1109/IEEECONF51394.2020.9443269info:eu-repo/semantics/articlehttp://dx.doi.org/10.1109/IEEECONF51394.2020.9443269ComputersInterference cancellationArray signal processingReceiversComputational efficiencyUplinkRadio access networksinfo:eu-repo/semantics/openAccess