| 摘要 |
FIELD: physics, communications. ^ SUBSTANCE: invention relates to a mobile communication system using an orthogonal frequency-division multiplexing (OFDM) scheme and is meant for increasing accuracy of channel estimation and increasing power gain efficiency. According to one aspect, the invention discloses a transmitting device having a unit for generating the transmitted signal, which is configured to generate the transmitted signal by performing inverse Fourier transformation of reference signals and data signals mapped to subcarriers, and a transmitting unit configured to wirelessly transmit the transmitted signal. In the transmitting device, the level of full power allocated to signals to be transmitted over a time interval is equal to the level of full power allocated to signals to be transmitted in any other time interval, and power density per unit bandwidth of the reference signals is greater than the power density per unit bandwidth of the data signals. ^ EFFECT: configuration enables to level the full transmission power level in all time intervals, thus increasing efficiency of power gain; also, since reference signals in this configuration are transmitted using a higher power level than other signals, it is possible to increase channel estimation accuracy. ^ 5 cl, 5 dwg |
