UPLINK FREQUENCY SELECTIVE PRECODER

Disclose is inter alia a user equipment for a frequency division duplex, FDD, system, comprising means for: -receiving, from a network, an uplink reference signal configuration; -receiving, from the network, an indication on an uplink reference signal precoding method; -receiving, from the network, a downlink reference signal; -estimating uplink channel wideband information based on the received downlink reference signal; -transmitting, to the network, an uplink reference signal based on the received uplink reference signal configuration, the estimated uplink channel wideband information and the indicated uplink reference signal precoding method; -receiving, from the network, uplink frequency selective precoding information, the uplink frequency selective precoding information having been determined based on the uplink reference signal and the indicated uplink reference signal precoding method; and-constructing an uplink frequency selective precoder based on the estimated uplink channel wideband information and the received uplink frequency selective precoding information.