| 摘要 |
Embodiments of the present invention provide a method and device for inserting and extracting pilot sequences. The method comprises: a transmitter inserts, according to pilot mappings corresponding to Nt transmit antenna ports, pilot sequences corresponding to the transmit antenna ports into OFDM symbols comprised in the pilot mappings corresponding to the transmit antenna ports by using Nt orthogonal pilot sequences different from each other, the Nt pilot sequences being corresponding to the Nt transmit antenna ports of the transmitter in a one-to-one manner, Nt being a positive integer greater than or equal to 2, and the pilot mappings corresponding to the transmit antenna ports being the same. In the method, different transmit antenna ports are differentiated by using orthogonal pilot sequences, and therefore, the transmit antenna ports can use identical pilot mappings, and in this manner, time-frequency resources occupied for transmitting pilot sequences can be reduced, and time-frequency resources occupied by the pilot sequences are not increased as the number of the transmit antenna ports of a MIMO system is increased, thereby improving the spectrum efficiency and the throughput of the whole system. |
