INSERTING AND EXTRACTING PILOT SEQUENCES

摘要

Embodiments of the present disclosure provide methods and devices for inserting and extracting a pilot sequence according to a pilot mapping indicating a location for inserting the pilot sequence in a plurality of time-frequency resources. One example method includes inserting, by a transmitter according to pilot mappings corresponding to Nt transmit antenna ports by using Nt orthogonal pilot sequences that are different from each other, a pilot sequence corresponding to each of the transmit antenna ports into OFDM symbols that are included in the pilot mapping corresponding to the transmit antenna port. There is a one-to-one correspondence between the Nt pilot sequences and the Nt transmit antenna ports of the transmitter, where Nt is a positive integer greater than or equal to 2. The pilot mappings corresponding to the transmit antenna ports are the same among the Nt transmit antenna ports.

主权项

1. A method for inserting a pilot sequence, comprising:
inserting, by a transmitter according to pilot mappings corresponding to Nt transmit antenna ports by using Nt orthogonal pilot sequences that are different from each other, a pilot sequence corresponding to each of the transmit antenna ports into orthogonal frequency division multiplexing (OFDM) symbols that are comprised in the pilot mapping corresponding to the transmit antenna port, wherein the pilot mapping indicates a location for inserting the pilot sequence in a plurality of time-frequency resources, wherein there is a one-to-one correspondence between the Nt pilot sequences and the Nt transmit antenna ports of the transmitter, wherein Nt is a positive integer greater than or equal to 2, and the pilot mappings corresponding to the transmit antenna ports are the same for the Nt transmit antenna ports; and sending, by the transmitter to a receiver, the OFDM symbols into which the pilot sequence is inserted.