PUSCH DMRS (LTE-Advanced)
is the uplink user's shared channel Demodulation Reference Signal (DMRS) and is transmitted in each resource block allocated to the user. PUSCH Physical Uplink Shared Channel DMRS is transmitted during symbol 3 (normal CP 1) Contention period, or 2) Cyclic prefix) or symbol 2 (extended CP).
The modulation type used is Zadoff-Chu, causing the constellation for DM-RS DeModulation Reference Signal (LTE) to look like irregularly spaced points on a circle. The PUSCH DMRS Zadoff-Chu sequence values are modulated directly onto the subcarriers using OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. (rather than using SC-FDMA Single Carrier - Frequency Division Multiple Access like PUSCH).
When is selected, Frame Summary will show information about all detected PUSCH DMRS signals which match the PUSCH parameters in the LTE Allocation Editor. This information is located in the row for .
When is cleared, will show information about PUSCH DMRS in the row for the user currently selected for analysis and show "---" for the other users' rows since the demodulator can only analyze one user at a time.
See Also
