FIELD: radio engineering, communication.
SUBSTANCE: invention relates to a wireless communication system and is intended to reduce the probability of interference between layers corresponding to different code word streams and improving channel estimation accuracy. Since the engineering solution of the present invention employs a fixed mapping method, the probability of random mapping is reduced and control signalling overhead is reduced. The present invention also discloses a method of mapping from a layer to a multiplexing demodulation reference symbol (DMRS) port and an apparatus for performing precoding based on a hybrid DMRS.
EFFECT: invention discloses a precoding method for hybrid multiplexing demodulation reference symbol (DMRS), which includes determining a multiplexing relationship between DMRS ports; making data transport layers correspond to DMRS ports with the determined multiplexing relationship; and precoding pilot sequences corresponding to various DMRS ports according to the relationship between the data transport layers and the DMRS ports.
23 cl, 6 dwg
