FIELD: information technologies.
SUBSTANCE: invention relates to a system of multiple access with frequency division with a single carrier (SC-FDMA), which uses an interlaced FDMA (IFDMA) or a limited FDMA, multiple transmitters may send their control signals using multiplexing with time division (TDM), multiplexing with code division (CDM), frequency multiplexing with interlacing (IFDM), or limited frequency multiplexing (LFDM). Control signals from these transmitters in this case are orthogonal to each other. A receiver performs complementary demultiplexing for control signals sent by transmitters. The receiver may receive a channel estimate for each transmitter, using a method of minimum mean-square error (MMSE) or a method of least squares. The receiver may receive overlapping data transfers sent on one and the same frequency-time unit by multiple transmitters and may perform spatial processing for the receiver with matrices of a space filter, in order to identify such data transfers. The receiver may receive matrices of the space filter on the basis of channel estimates for transmitters and using methods of conversion to zero, MMSE, or combination of maximum ratio.
EFFECT: support of simultaneous transfer for larger quantity of terminals in a system of multiple access.
28 cl, 21 dwg
