DCT-based compression scheme for OFDM baseband signals

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title = "DCT-based compression scheme for OFDM baseband signals",
abstract = "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{\%}.",
author = "Fonseca, {Maria Nilma} and Leonardo Ramalho and Aldebaro Klautau and Chenguang Lu and Miguel Berg and Stefan Host",
year = "2018",
month = "5",
day = "18",
doi = "10.1109/WD.2018.8361700",
language = "English",
volume = "2018-April",
pages = "92--97",
booktitle = "2018 Wireless Days, WD 2018",
publisher = "IEEE Computer Society",
address = "United States",