Patent ID: 8432994
Filing Date: 2013-04-30
Classification: H04B,H04L

Abstract:
1. A method for determining demodulation reference signal (DMRS) in the uplink, comprising: taking one of multiple transmit antennas in the uplink as a base transmit antenna, taking other transmit antennas as subordinating transmit antennas and setting a DMRS for the base transmit antenna; establishing DMRS subordinating relationships between the base transmit antenna and each of the subordinating transmit antennas, and setting a DMRS for each of the subordinating transmit antennas according to the DMRS of the base transmit antenna and the corresponding DMRS subordinating relationship; wherein setting a DMRS for the base transmit antenna comprises selecting a base sequence for the DMRS of the base transmit antenna, obtaining a reference signal of the base transmit antenna by performing a cyclic shift to the base sequence, and taking the reference signal as the DMRS of the base transmit antenna; wherein establishing DMRS subordinating relationships between the base transmit antenna and each of the subordinating transmit antennas comprises determining a cyclic shift value for the DMRS of the i  wherein i=1, . . . , n