Time-domain-based channel estimation in orthogonal frequency division multiplexing (ofdm) systems
AssigneeSamsung Electronics Co., Ltd.
InventorsVan Thuy Nguyen, Yang Li
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for time-domain-based channel estimation in OFDM systems in wireless communication systems. The method of a base station comprises: receiving, from a user equipment (UE) via a set of antennas, uplink signals including at least one of sounding reference signals (SRSs) or demodulation reference signals (DMRs); identifying time-domain channel estimation (TDCE) for each of the uplink signals, wherein a noise power is estimated to identify the TDCE; removing a noise floor from the identified TDCE; and performing, based on the estimated noise power and an estimated signal-to-noise ratio (SNR), an operation to obtain normalized mean square error (NMSE) for the TDCE.
Claims20
A base station (BS) in a wireless communication system, the BS comprising:
- a transceiver configured to receive, from a user equipment (UE) via a set of antennas, uplink signals including at least one of sounding reference signals (SRSs) or demodulation reference signals (DMRs);
- and
- a processor operably coupled to the transceiver, the processor configured to:
- identify time-domain channel estimation (TDCE) for each of the uplink signals, wherein a noise power is estimated to identify the TDCE,
- remove a noise floor from the identified TDCE, and
- perform, based on the estimated noise power and an estimated signal-to-noise ratio (SNR), an operation to obtain normalized mean square error (NMSE) for the TDCE.
A method of a base station (BS) in a wireless communication system, the method comprising:
- receiving, from a user equipment (UE) via a set of antennas, uplink signals including at least one of sounding reference signals (SRSs) or demodulation reference signals (DMRs);
- identifying time-domain channel estimation (TDCE) for each of the uplink signals, wherein a noise power is estimated to identify the TDCE;
- removing a noise floor from the identified TDCE;
- and
- performing, based on the estimated noise power and an estimated signal-to-noise ratio (SNR), an operation to obtain normalized mean square error (NMSE) for the TDCE.
Dependencies are inferred from the claim text.