An LPC-based fronthaul compression scheme

Research output: Contribution to journalArticle


Several new architectures are under investigation for cloud radio access networks, assuming distinct splits of functionality among the network elements. Consequently, the research on radio data compression for the fronthaul is based on assumptions that correspond to a wide variety of tradeoffs among data rate, signal distortion, latency, and computational cost. This letter describes a method for LTE downlink point-topoint signal compression based on linear prediction and Huffman coding, which is suitable for low cost encoding and decoding units with stringent restrictions on power consumption. The proposed method can work at various compression factors, such as 3.3:1 at an average EVM of 0.9%, or 4:1 at an average EVM of 2.1%.


  • Leonardo Ramalho
  • Maria Nilma Fonseca
  • Aldebaro Klautau
  • Chenguang Lu
  • Miguel Berg
  • Elmar Trojer
  • Stefan Höst
External organisations
  • Federal University of Pará
  • Ericsson AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Communication Systems


  • C-RAN, Fronthaul, LPC, LTE signal compression
Original languageEnglish
Article number7731140
Pages (from-to)318-321
Number of pages4
JournalIEEE Communications Letters
Issue number2
Publication statusPublished - 2017 Feb 1
Publication categoryResearch