Methods and devices for channel estimation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsRui Fan, Hai Wang
Life of this patent
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Abstract
The present disclosure provides a method (100) in a network device for channel estimation. The method (100) includes: transmitting (110) to a terminal device an instruction to precode each of a number, L, of DeModulation Reference Signals, DMRSs, using a number, N, of linearly independent precoders, respectively; receiving (120) from the terminal device L*N precoded DMRSs; estimating (130) an equivalent channel associated with an uplink channel from the terminal device to the network device based on one or more of the L*N precoded DMRSs; and determining (140) the uplink channel from the equivalent channel based on the N precoders.
Claims18
A network device for channel estimation, the network device comprising one or more processors and one or more memories comprising instructions executable by the processors, whereby the network device is configured to:
- transmit, to a terminal device, an instruction to precode each of a number, L, of DeModulation Reference Signals (DMRSs) using a number, N, of linearly independent precoders, respectively;
- receive, from the terminal device, L*N precoded DMRSs;
- estimate an equivalent channel associated with an uplink channel from the terminal device to the network device based on one or more of the L*N precoded DMRSs;
- and
- determine the uplink channel from the equivalent channel based on the N precoders.
A terminal device comprising one or more processors and one or more memories comprising instructions executable by the processors, whereby the terminal device is configured to:
- receive, from a network device in a wireless communication network, an instruction to precode each of a number, L, of DeModulation Reference Signals (DMRSs) using a number, N, of linearly independent precoders, respectively;
- and
- transmit, to the network device, L*N precoded DMRSs.
A non-transitory computer-readable storage medium on which is stored instructions that, when executed by one or more processors of a terminal device, cause the terminal device to:
- receive, from a network device, an instruction to precode each of a number, L, of DeModulation Reference Signals (DMRSs) using a number, N, of linearly independent precoders, respectively;
- and
- transmit, to the network device, L*N precoded DMRSs.
Dependencies are inferred from the claim text.