2020/01/09 by Cleverson Nahum, Nahum, Cleverson, Leonardo Ramalho +11
Computer Science · Engineering · #Advanced MIMO Systems Optimization #FOS: Electrical engineering #Signal Processing (eess.SP) #Telecommunications and Broadcasting Technologies #Wireless Communication Networks Research #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2001.03199
openalex publication_date 2020/01/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
This paper presents a compression scheme developed for the transport of\ndownlink radio signals in packet fronthaul of centralized-radio access networks\n(C-RAN). The technique is tailored to frequency-domain functional splits, in\nwhich inactive LTE (or 5G NR) resource elements may not be transmitted in the\npackets. This allows decreasing the link data rate, especially when the cell\nload is low. The compression scheme is based on two parts: transmission of side\ninformation to indicate active and inactive resource elements of the LTE, and\nnonuniform scalar quantization to compress the QAM symbols of the active\nresource elements. The method was implemented in the OpenAirInterface (OAI)\nsoftware for real-time evaluation. The testbed results show a significant\nreduction in link usage with a low computational cost.\n