Transmitter, receiver and controlling method thereof

摘要

Provided are a transmitter, receiver and method of transmitting and receiving Orthogonal Frequency-Division Multiplexing (OFDM) symbols. The transmitter includes: a sub carrier grouping part configured to perform grouping of a plurality of sub carriers into a plurality of groups, and to change phases and/or amplitudes of the plurality of sub carriers by group; and a transmitting part configured to generate at least one OFDM symbol from the plurality of sub carriers of which the phases and/or the amplitudes have been randomly changed by group, and to transmit the OFDM symbol and information about the grouping.

主权项

1. A transmitter comprising:
at least one memory configured to store computer executable instructions; and at least one processor configured to execute the computer executable instructions, the computer executable instructions controlling the at least one processor to perform: a sub carrier grouping operation of grouping a plurality of sub carriers into a plurality of groups, and changing phases and/or amplitudes of the plurality of sub carriers by group so that the plurality of groups of sub carriers have different phases and/or amplitudes; and a transmitting operation of generating at least one Orthogonal Frequency-Division Multiplexing (OFDM) symbol from the plurality of groups of sub carriers of which the phases and/or the amplitudes have been changed by group, and transmitting the OFDM symbol and information about the grouping, wherein the grouping a plurality of sub carriers comprises grouping the plurality of sub carriers such that at least two groups of the plurality of groups of sub carriers have different numbers of sub carriers.