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Kim, <i>et al.<\/i>: \u201cExperimental demonstration of CPRI data compression based on partial bit sampling for mobile front-haul link in C-RAN,\u201d OFC (2016) 1 (DOI: 10.1364\/OFC.2016.W1H.5)."},{"key":"2","unstructured":"[2] CPRI Specification V7.0 (2015) https:\/\/www.cpri.info."},{"key":"3","unstructured":"[3] eCPRI Specification V1.1 (2018) https:\/\/www.cpri.info."},{"key":"4","unstructured":"[4] China Mobile Research Institute: \u201cC-RAN: the road towards green RAN,\u201d White paper version 1.0.0 (2010)."},{"key":"5","unstructured":"[5] T. Hu, <i>et al.<\/i>: \u201cMethod of I\/Q data compression based on CPRI protocol,\u201d Optical Communication Technology <b>7<\/b> (2015) 61 (DOI: 10.13921\/j.cnki.issn1002-5561.2015.07.018)."},{"key":"6","unstructured":"[6] G. 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Evans: \u201cTime-domain compression of complex-baseband LTE signals for cloud radio access networks,\u201d IEEE Global Conference on Signal and Information Processing (2013) 1198 (DOI: 10.1109\/GlobalSIP.2013.6737122)."},{"key":"12","unstructured":"[12] R. Maiden: \u201cLow-loss compression of CPRI baseband data,\u201d (2014) https:\/\/www.edn.com\/low-loss-compression-of-cpri-baseband-data\/."},{"key":"13","unstructured":"[13] Y. Ren, <i>et al.<\/i>: \u201cA compression method for LTE-A signals transported in radio access networks,\u201d ICT (2014) 293 (DOI: 10.1109\/ICT.2014.6845126)."},{"key":"14","unstructured":"[14] D. Peng-ren and Z. Can: \u201cCompressed transport of baseband signals in cloud radio access networks,\u201d 9th International Conference on Communications and Networking in China (2014) 484 (DOI: 10.1109\/CHINACOM.2014.7054343)."},{"key":"15","unstructured":"[15] H. Kwak, <i>et al.<\/i>: \u201cCompression method to remove unnecessary MSBs of IQ data frames in C-RAN,\u201d WWIC (2017) 315 (DOI: 10.1007\/978-3-319-61382-6_26)."},{"key":"16","unstructured":"[16] B. Guo, <i>et al.<\/i>: \u201cCPRI compression transport for LTE and LTE-A signal in C-RAN,\u201d International Icst Conference on Communications and Networking in China (2013) 843 (DOI: 10.1109\/ChinaCom.2012.6417602)."},{"key":"17","unstructured":"[17] B. Guo, <i>et al.<\/i>: \u201cLTE\/LTE-A signal compression on the CPRI interface,\u201d Bell Labs Technical Journal <b>18<\/b> (2013) 117 (DOI: 10.1002\/bltj.21608)."},{"key":"18","unstructured":"[18] J. Lee, <i>et al.<\/i>: \u201cA simple and efficient IQ data compression method based on latency, EVM, and compression ratio analysis,\u201d IEEE Access <b>7<\/b> (2019) 117436 (DOI: 10.1109\/ACCESS.2019.2936218)."},{"key":"19","unstructured":"[19] International Telecommunication Union: \u201cITU-T Recommendation G.711,\u201d (2000) https:\/\/www.itu.int\/rec\/T-REC-G.711"},{"key":"20","unstructured":"[20] O-RAN front-haul Working Group Control: User and synchronization plane specification (2019) https:\/\/www.o-ran.org\/."},{"key":"21","unstructured":"[21] C.W. Brokish: \u201cA-law and mu-law companding implementation using the TMS320C54x,\u201d Application Note (1997) SPRA163A."},{"key":"22","unstructured":"[22] Z. Abraham: \u201cRelative distance-an error measure in round-off error analysis,\u201d Math Comp <b>39<\/b> (1982) 563 (DOI: 10.2307\/2007334)."},{"key":"23","unstructured":"[23] J. 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Agata, <i>et al.<\/i>: \u201cPerformance enhancement of optical access network in C-RAN using nonlinear quantization-based compression,\u201d OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology (2014) 144."},{"key":"28","unstructured":"[28] 3rd Generation Partnership Project (2019) https:\/\/www.3gpp.org\/ftp\/Specs\/archive\/36_series\/36.104\/."},{"key":"29","unstructured":"[29] J.-Y. Oh and H.-S. Chung: \u201cPerformance investigation of high compression data transmission based on group scaling for mobile front-haul,\u201d ICTC (2016) 973 (DOI: 10.1109\/ICTC.2016.7763344)."},{"key":"30","unstructured":"[30] K. Tanaka and A. 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