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LTE: What is the use of PUCCH de-modulation reference signal (DMRS) which is transmitted along with PUCCH resources ?

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LTE: What is the use of PUCCH de-modulation reference signal (DMRS) which is transmitted along with PUCCH resources ?
posted Aug 30, 2016 by Harshita

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1 Answer

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Hi harshitha,

DMRS is a demodulation reference signal, which gives the channel quality of PUCCH and PUSCH data . Enb will decode the DMRS first , If it is succesfull then he will proceeding decoding the PUCCH,PUSCH. If fails he wont decode the PUCCH,PUSCH.
DMRS is a CAZAC sequence, multipke UE will have multiple CAZAC sequence by useiong cyclic shift. this will be configured by ENB to UE.

answer Aug 30, 2016 by Jaganathan
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