| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: receiving device serves to receive a signal transmitted from a transmitting device, which is modulated using an OFDM scheme. Said receiving device comprises a receiving unit configured to receive a transmitted signal, generated through inverse Fourier transform of a reference signal and a data signal, mapped into subcarriers; and a processing unit configured to process the received signal. The level of total power allocated to a first signal, transmitted when the reference signal and the data signal are frequency multiplexed and received by the receiving unit, is equal to the total power allocated to a second signal transmitted when only the data signal is mapped and received by the receiving unit; during the first signal, where the reference signal and the data signal are frequency multiplexed, mapping the data signal into a predetermined subcarrier is prevented, and power density per unit bandwidth of the reference signal is greater than the power density per unit bandwidth of the data signal; and the power density per unit bandwidth of the data signal in the second signal is equal to the power density per unit bandwidth of the data signal in the first signal.EFFECT: high accuracy of channel estimation.4 cl, 5 dwg |
