What is the LTE DL reference signals used for?

What is the LTE DL reference signals used for?

The purpose of this Reference Signal is to deliver the reference point for the downlink power. These reference signal are carried by multiples of specific Resource Elements in each slots and the location of the resource elements are specifically determined by antenna configuration.

What is CSI reference signal?

Channel State Information Reference Signal (CSI-RS) is a reference signal (RS) that is used in the Downlink (DL) direction in 5G NR, for the purpose of Channel Sounding and used to measure the characteristics of a radio channel so that it can use correct modulation, code rate, beam forming etc.

What are reference signals?

One reference signal is transmitted from each downlink antenna port. The downlink reference signal can be used for the following purposes: Cell search and initial acquisition. Downlink channel quality measurements. Downlink channel estimation for coherent demodulation/detection at the UE.

What is Pdsch and Pdcch?

PDSCH — physical downlink shared channel. The PDSCH carries user data and paging information to the terminal. PDCCH — physical downlink control channel. The PDCCH conveys control information, scheduling decisions for PDSCH reception, and for scheduling grants enabling transmission on the PUSCH.

What is Pdsch in 5G?

In 5G NR, PDSCH is the physical downlink channel that carries user data. DM-RS and PT-RS are the reference signals associated with PDSCH. These signals are generated within the PDSCH allocation, as defined in TS 38.211 Sections 7.4. 1.1 and 7.4.

What is PSS and SSS in LTE?

In LTE, there are two downlink synchronization signals which are used by the UE to obtain the cell identity and frame timing. Primary synchronization signal (PSS) Secondary synchronization signal (SSS)

What is downlink reference signal in LTE?

Downlink Reference Signal Design for LTE Compatible GEO Mobile Satellite System. Abstract: Reference signal (RS) is a crucial signal which is used for channel estimation and data demodulation in 3GPP long term evolution (LTE) system.

What is CSI LTE report?

CSI stands for Channel Status Information. As the name implies, it is a kind of indicator how good or bad the channel is at a specific time.

What is Dmrs LTE?

PUSCHPhysical Uplink Shared Channel DMRS is the uplink user’s shared channel Demodulation Reference Signal (DMRS) and is transmitted in each resource block allocated to the user. PUSCH DMRS is transmitted during symbol 3 (normal CP1) Contention period, or 2) Cyclic prefix) or symbol 2 (extended CP).

What is LTE Pdcch?

It is used to carry DCI (Downlink Control Information). We get the information about number of OFDMA symbols used by PDCCH after decoding PCFICH. The symbols are always at the start of each subframe.

What is PSS and SSS?

The primary synchronization signal (PSS) is linked to the cell identity within the group ( N I D ( 2 ) ). The secondary synchronization signal (SSS) is linked to the cell identity group ( N I D ( 1 ) ) and the cell identity within the group ( N I D ( 2 ) ).