DATA TRANSMISSION IN MULTI-USER OFDM SYSTEM WITH ADAPTIVE MODULATION Russian patent published in 2012 - IPC H04L5/02 

FIELD: information technology.

SUBSTANCE: invention is aimed at processing information (DS) to be sent via radio, according to which first bits (DS1) represent a first number of N-tuples and second bits (DSN) represent a second number of N-tuples. The first bits are to be sent using a first group of sub-bands of a frequency band (CHUNK 1), and the second bits are to be sent using a second group of sub-bands of the frequency band (CHUNK N). A first modulation method (MODX) is used for the first bits and a second modulation method (MODY) is used for the second bits. The first bits are rearranged, forming M-tuples, and a symbol is formed from each M-tuple according to the first modulation method. The second bits are rearranged, forming P-tuples, and a symbol is formed from each P-tuple according to the second modulation method, and M ≠ P. The invention also relates to a corresponding method for processing information received by radio, and base stations and mobile radio stations for carrying out the method.

EFFECT: high transmission efficiency.

25 cl, 3 dwg