Transparent demodulation reference signal design
AssigneeQUALCOMM Incorporated
InventorsChenxi Hao, Xiaohui Liu, Chao Wei, Yu Zhang
Life of this patent
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Abstract
Certain aspects of the present disclosure provide procedures for transparent demodulation reference signal (DM-RS) design. According to certain aspects, a method of wireless communication by a base station (BS) is provided. The method generally includes transmitting one or more pilots based on at least one precoder used for transmitting data. The BS transmits the data based on the at least one precoder. A method by a user equipment (UE) includes receiving one or more pilots based on at least one precoder used for transmitting data on a channel. The UE estimates interference based on the one or more pilots and the UE decodes the data transmission based on the interference estimate.
Claims32
A method for wireless communications by a user equipment (UE), comprising:
- receiving a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data on a channel;
- estimating interference based on the plurality of DMRS pilots;
- decoding the data transmission based on the interference estimate;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
A method for wireless communications by a user equipment (UE), comprising:
- transmitting a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data;
- transmitting the data based on the at least one precoder;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
A method for wireless communications by a base station (BS), comprising:
- transmitting a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data;
- transmitting the data based on the at least one precoder;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
A method for wireless communications by a base station (BS), comprising:
- receiving a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data on a channel;
- estimating interference based on the plurality of DMRS pilots;
- decoding the data transmission based on the interference estimate;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
A user equipment (UE) for wireless communication, comprising:
- a memory;
- and one or more processors, coupled to the memory, configured to:
- receive a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data on a channel;
- estimate interference based on the plurality of DMRS pilots;
- decode the data transmission based on the interference estimate;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
A base station (BS) for wireless communication, comprising:
- a memory;
- and one or more processors, coupled to the memory, configured to:
- transmit a plurality of demodulation reference signal (DMRS) pilots based on at least one precoder used for transmitting data;
- transmit the data based on the at least one precoder;
- and wherein the plurality of DMRS pilots comprise at least one negative conjugate of a DMRS pilot.
Dependencies are inferred from the claim text.