Most answered questions under tag phy

+6 votes

3 answers

LTE: How an UE get to know cell is running on MIMO mode or not ?

posted Feb 5, 2014 by Harshita

+7 votes

3 answers

LTE: Difference between Adaptive and non-adaptive HARQ ?

posted Dec 6, 2013 by Vimal Kumar Mishra

+7 votes

3 answers

LTE:Why is the Cyclic Prefix (CP) needed?

posted Oct 30, 2013 by Ganesh Kumar

+1 vote

2 answers

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

posted May 27, 2017 by anonymous

+1 vote

2 answers

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

posted Aug 27, 2016 by Ganesh

0 votes

2 answers

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

posted Aug 24, 2016 by Harshita

+1 vote

2 answers

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

posted Aug 9, 2016 by Ganesh

+1 vote

2 answers

What is the concept of code block in LTE-Phy layer?

posted Jun 12, 2014 by Karan Joglekar

+4 votes

2 answers

what is the use of Extended cyclic prefix in lte

posted Jan 8, 2014 by Sandeep

+4 votes

2 answers

LTE: Difference between closed loop MIMO and open loop MIMO ?

posted Nov 5, 2013 by Ganesh Kumar

+4 votes

2 answers

LTE: What is sampling frequency and use of it ?

posted Nov 2, 2013 by Vikram Singh

+4 votes

2 answers

LTE: What is the basic difference Resource Allocation type 0 and 1 ?

posted Oct 31, 2013 by Neeraj Mishra

+1 vote

1 answer

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

+1 vote

1 answer

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

posted Feb 8, 2019 by Gnanendra Reddy

+2 votes

1 answer

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

posted Jul 25, 2018 by Vikram Singh

+2 votes

1 answer

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

+2 votes

1 answer

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

posted Nov 2, 2016 by Rupam

0 votes

1 answer

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

posted Oct 22, 2016 by Rupam

0 votes

1 answer

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

posted Oct 20, 2016 by Rupam

+3 votes

1 answer

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

1 answer

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

posted Oct 10, 2016 by Vikram Singh

0 votes

1 answer

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

posted Sep 26, 2016 by Rupam

+1 vote

1 answer

How UE PHY LAYER performs measurements in LTE?

posted Sep 9, 2016 by Gnanendra Reddy

+3 votes

1 answer

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

posted Sep 8, 2016 by Shruti Pujari

+1 vote

1 answer

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

+1 vote

1 answer

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

posted Aug 30, 2016 by Harshita

+1 vote

1 answer

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

posted Aug 27, 2016 by Ganesh

+2 votes

1 answer

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

posted Aug 27, 2016 by Ganesh

+2 votes

1 answer

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

posted Aug 26, 2016 by Harshita

+3 votes

1 answer

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

posted Apr 9, 2016 by Harshita

+1 vote

1 answer

What is the minimum length of cyclic prefix in OFDM systems

posted Feb 29, 2016 by Shyam Narayan

+1 vote

1 answer

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

0 votes

1 answer

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

posted Jan 8, 2016 by Harshita

+3 votes

1 answer

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

posted Sep 5, 2015 by Neeraj Mishra

+1 vote

1 answer

Basic difference between Amplitude Modulation and Frequency Modulation ?

posted May 27, 2015 by Harshita

0 votes

1 answer

What is the functionality of LTE physical layer ?

posted Mar 21, 2015 by Alok

+3 votes

1 answer

How PCI selection is done for a lte cell ?

posted Mar 21, 2015 by Harshita

+2 votes

1 answer

What is the relationship between eNodeB,Cell and Sector ?

posted Mar 18, 2015 by Kishore Kumar Ponukumati

0 votes

1 answer

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

posted Dec 15, 2014 by anonymous

+1 vote

1 answer

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

1 answer

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

1 answer

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

0 votes

1 answer

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

posted Dec 10, 2014 by Sridharan P

+1 vote

1 answer

In case of 4x4 MIMO, how many reference signals are there in an RB?

posted Dec 10, 2014 by Sridharan P

+1 vote

1 answer

What are the main factors in calculation of Power for PUSCH?

posted Dec 9, 2014 by Sridharan P

+2 votes

1 answer

what are the control information interleaved together with PUSCH?

posted Dec 9, 2014 by Sridharan P

+3 votes

1 answer

Which are the Physical signals sent in DCI?

posted Dec 8, 2014 by Sridharan P

+2 votes

1 answer

Which are the Physical signals sent in UCI?

posted Dec 8, 2014 by Sridharan P

+2 votes

1 answer

what are the values transmitted as CSI?

posted Dec 6, 2014 by Sridharan P

+2 votes

1 answer

What is the content of the cyclic prefix ?

posted Dec 4, 2014 by Sridharan P