PILOT-SIGNAL STRUCTURE IN COMMUNICATION SYSTEM WITH ORTHOGONAL MULTIPLEXING WITH FREQUENCY DIVISION OF POINT-TO-MULTIPOINT Russian patent published in 2017 - IPC H04L5/00 

FIELD: radio engineering, communication.

SUBSTANCE: central unit of the access network comprises a processor configured to assign a plurality of uplink training units of OFDM-symbol uplink plurality of network modules downlink, the OFDM-symbol comprises a plurality of subcarriers pilot signals are uniformly distributed over the uplink RF spectrum in predetermined time interval, each training block uplink comprises a subset of subcarriers of the pilot signals are not coherent and disposed on the RF spectrum uplink, and forming one or more messages containing a destination training blocks uplink, and a transmitter coupled to and a processor configured to transmit messages multiple downlink network modules via a network, wherein the messages indicate to at least one of the plurality of downlink network modules to transmit the modulated predetermined sequence to the pilot subcarriers corresponding to the uplink training unit assigned to the downlink network module.

EFFECT: increased bandwidth channels.

17 cl, 10 dwg