FIELD: information technologies.
SUBSTANCE: traffic in system can belong to various categories (e.g. control data, user data and pilot data). For each category one or more OFDM symbols of appropriate size can be selected to be used on the basis of expected size of useful data for traffic of this category. For example control data can be transmitted using OFDM symbols of the first size, user data can be transmitted using OFDM symbols or the first and the second size, pilot data can be transmitted using OFDM symbols of the third or the first size, herein OFDM symbol of the second size from OFDM symbol of the first size.
EFFECT: enhancement of efficiency.
33 cl, 11 dwg, 4 tbl
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