11/28/2023 0 Comments How many symbols are in a slot machineThey can also be used to estimate receive signal power, as is already the case in LTE.ĬSI-RS, or channel state information reference signals, help the receiver provide estimate of the channel that can be exploited for resource allocation, beamforming, and beam management. DM-RS are used for channel estimation and demodulation of associated physical channels. This slide shows a list of physical signals for downlink and some of them are addressed in other episodes of these "5G Explained" video series. We will discuss the application of these configurations to different beamforming scenarios.ĭM-RS are not the only physical signals defined for 5GNR. We will look at what DM-RS are used for and detailed parameters that configure their number and positions, including PDSCH mapping type, single versus double symbols, additional DM-RS, as well as types 1 and 2. This is a new episode of our series, "5G Explained." In this video, we discuss the modulation reference signals, or DM-RS, in 5G in your radio.
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