DCT-based compression scheme for OFDM baseband signals

Maria Nilma Fonseca, Leonardo Ramalho, Aldebaro Klautau, Chenguang Lu, Miguel Berg, Stefan Host

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review


The requirements on the data rates of communication systems increase roughly an order of a magnitude at each new generation. This increase can be especially noticeable for the new centralized radio access networks (C-RAN) scenarios, considered for meeting the requirements of the fifth generation (5G) wireless systems. The general C-RAN architecture normally assumes data transmission in the form of digitized baseband, i.e. I/Q samples. This paper proposes a relatively low-complexity compression scheme for LTE OFDM baseband samples based on transform coding, using the discrete cosine transform (DCT). The compression method is evaluated in both downlink and uplink. The results show that this process can be configured to achieve compression ratio according with the load, for example, in the range of 5:1 to 31:1, with error vector magnitudes (EVMs) lower than 2.8%.

Original languageEnglish
Title of host publication2018 Wireless Days, WD 2018
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9781538656327
Publication statusPublished - 2018 May 18
Event10th Annual Wireless Days Conference, WD 2018 - Dubai, United Arab Emirates
Duration: 2018 Apr 32018 Apr 5


Conference10th Annual Wireless Days Conference, WD 2018
Country/TerritoryUnited Arab Emirates

Subject classification (UKÄ)

  • Communication Systems


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