Recent posts under tag phy

+1 vote

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Can we have different MCS scheme per PRB instead of Group of PRBs in case of sub band CQI report?

posted Mar 10, 2019 by Gnanendra Reddy

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What are the advantages and disadvantages of Single code word and multi code word?

posted Mar 9, 2019 by Gnanendra Reddy

+1 vote

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How to calculate Resources blocks for a given 20 MHZ Bandwidth?

posted Feb 8, 2019 by Gnanendra Reddy

+2 votes

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LTE: Why only PHICH not other channels are transmitted in the Master Information Block ?

posted Jul 25, 2018 by Vikram Singh

+2 votes

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Is transmit diversity available in NR?

posted Mar 13, 2018 by Jaganathan

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5G: How filter OFDM (F-OFDM) is different from cyclic prefix OFDM (CP-OFDM) ?

posted Mar 7, 2018 by Vikram Singh

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What is layer mapping in LTE?

posted Sep 28, 2017 by Charan Shah

+2 votes

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LTE: Why radio sub frame is 1 ms long ? Is it possible to bring the sub frame duration in the unit of microseconds ?

posted Jun 6, 2017 by Harshita

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why QPSK modulation scheme is used for all control channels in LTE ?

posted May 27, 2017 by anonymous

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LTE: Is there any role of MBSFN Area ID in the generation of MBMS RS (MBMS Reference Signal) sequence ?

posted Nov 5, 2016 by Harshita

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LTE: Which modulation and coding schemes are used for data transmission of MTCH ?

posted Nov 2, 2016 by Rupam

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LTE: What all MCS indexes can be used for the configuration of PMCH ?

posted Oct 22, 2016 by Rupam

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LTE: What parameter gets impacted when sub-carrier spacing is changed in LTE ?

posted Oct 20, 2016 by Rupam

+3 votes

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LTE: Does the eNodeB inform UE to use a specific MCS for the allocated resource in PUSCH ?

posted Oct 13, 2016 by Harshita

+1 vote

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LTE: Why PUCCH resources are reserved at both the end of system bandwidth ?

posted Oct 10, 2016 by Vikram Singh

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LTE: Why eNodeB scramble MIB information with antenna specific mask before broadcasting over the air ?

posted Sep 26, 2016 by Rupam

+2 votes

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What is layer mapping in context of LTE?

posted Sep 16, 2016 by Sneha Maganahalli

+1 vote

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How UE PHY LAYER performs measurements in LTE?

posted Sep 9, 2016 by Gnanendra Reddy

+3 votes

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How to get BW , SFN, PHICH related information from decoded(40 bit) PBCH frame?

posted Sep 8, 2016 by Shruti Pujari

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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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LTE: What parameters derive number of RBs or sub carriers used PUCCH resources in a subframe ?

posted Aug 30, 2016 by Harshita

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LTE: On what basis, a UE selects preamble sequence either from group A or B ?

posted Aug 27, 2016 by Ganesh

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LTE: In ideal condition, how many random access preambles can be decoded successfully at the eNodeB ?

posted Aug 27, 2016 by Ganesh

+2 votes

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LTE: How an UE come to know about number of transmit antennas supported at eNodeB ?

posted Aug 27, 2016 by Ganesh

+2 votes

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LTE: What all configurations at the eNodeB can lead to less throughput at the cell edge ?

posted Aug 26, 2016 by Harshita

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LTE: How many minimum RBs are required to transmit master information block ?

posted Aug 24, 2016 by Harshita

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How LTE downlink physical channel processing works?

posted Aug 23, 2016 by Gnanendra Reddy

+1 vote

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LTE: On what basis either dB or dBm is considered as a measurement unit ?

posted Aug 9, 2016 by Ganesh

+3 votes

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LTE: What is transmit diversity and what are the advantages of having it in LTE technology ?

posted Apr 9, 2016 by Harshita

+1 vote

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What is the minimum length of cyclic prefix in OFDM systems

posted Feb 29, 2016 by Shyam Narayan

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LTE: How does cell selection procedure work and what are all parameters considered for during this procedure ?

posted Feb 7, 2016 by Vikram Singh

+1 vote

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For what scenario the operator, choose different TDD frame configuration(0,1,2,3,4,5,6,7)?. Please specify separately.

posted Jan 29, 2016 by Karthik

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LTE-A: Does the radio link failure applicable for secondary cell ?

posted Jan 8, 2016 by Harshita

+4 votes

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LTE: How PCI should be selected for different neighboring cells (having same frequency) to avoid interference ?

posted Sep 30, 2015 by Vimal Kumar Mishra

+3 votes

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What does the range of Reference Signal Received Power (RSRP) in LTE and How it is calculated ?

posted Sep 5, 2015 by Neeraj Mishra

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Basic difference between Amplitude Modulation and Frequency Modulation ?

posted May 27, 2015 by Harshita

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What is the functionality of LTE physical layer ?

posted Mar 21, 2015 by Alok

+3 votes

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How PCI selection is done for a lte cell ?

posted Mar 21, 2015 by Harshita

+2 votes

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What is the relationship between eNodeB,Cell and Sector ?

posted Mar 18, 2015 by Kishore Kumar Ponukumati

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What does the parameter p-a represent in PDSCH config ?

posted Dec 15, 2014 by anonymous

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How many users PDCCH can be multiplexed for format 1 and format 2 respectively on the same physical resource?

posted Dec 15, 2014 by Sridharan P

+2 votes

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How many Maximum bits are there for PUCCH of format 1/1a/1b and 2/2a/2b each and they are spread in how many symbols?

posted Dec 15, 2014 by Sridharan P

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How many Symbols are used for PUSCH in a SRS subframe per subcarrier, including multiplexed CQI.

posted Dec 15, 2014 by Sridharan P

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For Turbo coding rate matching, data block is to be spread in how many columns?

posted Dec 15, 2014 by Sridharan P

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If for single layer TBS size is "X", will the TBS size be n.X for n layers? Why?

posted Dec 12, 2014 by Sridharan P

+2 votes

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For a buffer of length 6140 from MAC (TTI), what is the number of segments? Why?

posted Dec 11, 2014 by Sridharan P

+2 votes

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In FDD, the UL and DL frame timing is slightly skewed in time and who is earlier by how much?

posted Dec 11, 2014 by Sridharan P

+1 vote

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What is the length of preamble sequence in bits and how many RB's are required to send?

posted Dec 11, 2014 by Sridharan P

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What are the parameters defining the TBS size?

posted Dec 10, 2014 by Sridharan P

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If the TA is 25 in the RAR, what is the TA adjustment required in microseconds?

posted Dec 10, 2014 by Sridharan P