A system for connecting radio access nodes of a radio access network, said radio access network comprising a plurality of radio access nodes, or cells, each of said cells providing a coverage area to a plurality of user equipments, each of said radio access nodes is splitted into: - a common processing section which performs a main processing stage; and - a plurality of remote transceiving sections (2a, 2b, 2c), each performing a local processing stage complementing said main processing stage, being operatively connected to said common processing section, and constituting a sub-cell providing a coverage sub-area, wherein said coverage area is distributed into said coverage sub-areas, characterised in that: - said common processing section performs data processing functionalities between a radio resource control layer and a modulation mapper of the physical layer, said common processing section comprising the following blocks in the communication direction between the common processing section and the remote transceiving section: a code block segmentation, a channel coding, a rate matching, a code block concatenation, a circular buffer, a scrambling and a pre-modulation mapper; - wherein said pre-modulation mapper block adds the following information to data stream: - type of modulation to be applied in said remote transceiving section; and - the number of radio resources reserved to a user equipment; - wherein said radio resources are resources blocks, and said pre-modulation mapper block further adds the initial resource block where data will be mapped at said remote transceiving section to data stream, so that the output constitutes a lower data rate than the output of a common complex-modulated modulator; and - wherein said plurality of remote transceiving sections (2a, 2b, 2c) include the following blocks in the communication direction between the remote transceiving section and the common processing section: an IQ demodulation, a downconversion, an analog to digital conversion, a cyclic prefix removal, a FFT and IFFT processing, a resource element demapper and a demodulation demapper - a common processing section which performs a main processing stage; and - a plurality of remote transceiving sections (2a, 2b, 2c), each performing a local processing stage complementing said main processing stage, being operatively connected to said common processing section, and constituting a sub-cell providing a coverage sub-area, wherein said coverage area is distributed into said coverage sub-areas, characterised in that: - said common processing section performs data processing functionalities between a radio resource control layer and a modulation mapper of the physical layer, said common processing section comprising the following blocks in the communication direction between the common processing section and the remote transceiving section: a code block segmentation, a channel coding, a rate matching, a code block concatenation, a circular buffer, a scrambling and a pre-modulation mapper; - wherein said pre-modulation mapper block adds the following information to data stream: - type of modulation to be applied in said remote transceiving section; and - the number of radio resources reserved to a user equipment; - type of modulation to be applied in said remote transceiving section; and - the number of radio resources reserved to a user equipment; - wherein said radio resources are resources blocks, and said pre-modulation mapper block further adds the initial resource block where data will be mapped at said remote transceiving section to data stream, so that the output constitutes a lower data rate than the output of a common complex-modulated modulator; and - wherein said plurality of remote transceiving sections (2a, 2b, 2c) include the following blocks in the communication direction between the remote transceiving section and the common processing section: an IQ demodulation, a downconversion, an analog to digital conversion, a cyclic prefix removal, a FFT and IFFT processing, a resource element demapper and a demodulation demapper