Most voted questions under tag phy

+9 votes

1 answer

How the concatenation and segmentation works in Physical Downlink Shared Channel (PDSCH) processing?

posted Mar 26, 2014 by Hiteshwar Thakur

+7 votes

3 answers

LTE: Difference between Adaptive and non-adaptive HARQ ?

posted Dec 6, 2013 by Vimal Kumar Mishra

+7 votes

1 answer

LTE: Difference between synchronous and asynchronous harq ?

posted Dec 6, 2013 by Vimal Kumar Mishra

+7 votes

1 answer

LTE: What are the factors derive subcarrier spacing 15KHz ?

posted Nov 10, 2013 by Vimal Kumar Mishra

+7 votes

3 answers

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

posted Oct 30, 2013 by Ganesh Kumar

+7 votes

1 answer

LTE: How Beam forming works when it is needed and possible variations if possible ?

posted Oct 29, 2013 by Vikram Singh

+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

+6 votes

1 answer

LTE: When UE gets time-synchronized with cell ?

posted Feb 4, 2014 by Harshita

+6 votes

1 answer

LTE: How PCI help out to find out the reference signal location ?

posted Feb 4, 2014 by Harshita

+6 votes

1 answer

LTE: Difference between virtual and physical resource allocation schemes ?

posted Oct 31, 2013 by Neeraj Mishra

+5 votes

0 answers

What is a preamble format? How many types are there? Explain when which type of format is suitable?

posted Dec 6, 2014 by Sridharan P

+5 votes

1 answer

Why does lte support only 64 preamble sequences ?

posted Nov 5, 2014 by Neeraj Mishra

+5 votes

1 answer

LTE: How does UE PHY designed to work on multi mode (GSM/3G/LTE) ?

posted Nov 10, 2013 by Vimal Kumar Mishra

+5 votes

1 answer

LTE:What are time-dispersive channels ?

posted Oct 30, 2013 by Ganesh Kumar

+4 votes

0 answers

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

posted Sep 30, 2015 by Vimal Kumar Mishra

+4 votes

0 answers

What are the parameters defining the TBS size?

posted Dec 9, 2014 by Sridharan P

+4 votes

0 answers

which channel case BitRepeatationCoding is used?

posted Dec 8, 2014 by Sridharan P

+4 votes

1 answer

LTE: is there any difference between resource block (RB) and Physical Resource Block (PRB) ?

posted Aug 16, 2014 by Mohammad Alsharif

+4 votes

2 answers

what is the use of Extended cyclic prefix in lte

posted Jan 8, 2014 by Sandeep

+4 votes

1 answer

How does the EnodeB know if a UE supports carrier aggregation

posted Nov 8, 2013 by anonymous

+4 votes

1 answer

LTE: Why does uplink support only resource allocation type 2 ?

posted Nov 7, 2013 by Vikram Singh

+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

+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

+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

+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

+3 votes

0 answers

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

posted Feb 7, 2016 by Vikram Singh

+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

+3 votes

1 answer

How PCI selection is done for a lte cell ?

posted Mar 21, 2015 by Harshita

+3 votes

0 answers

What is the CRC length for CFICH and PHICH respectively?

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

+3 votes

1 answer

LTE: Why does LTE support only up to 64 QAM ?

posted May 3, 2014 by Neeraj Mishra

+3 votes

1 answer

LTE: Difference between the cyclic prefix and extended cyclic prefix ?

posted Apr 30, 2014 by Ganesh Kumar

+3 votes

1 answer

Difference between dBm and dB ?

posted Apr 6, 2014 by Neeraj Mishra

+3 votes

1 answer

What are the data transport services of the Physical Layer in LTE ?

posted Mar 26, 2014 by Ankur Athari

+3 votes

0 answers

LTE: What is CDD (Cyclic delay diversity) ?

posted Nov 12, 2013 by Vikram Singh

+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

0 answers

Is transmit diversity available in NR?

posted Mar 13, 2018 by Jaganathan

+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

+2 votes

0 answers

What is layer mapping in context of LTE?

posted Sep 16, 2016 by Sneha Maganahalli

+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

+2 votes

1 answer

What is the relationship between eNodeB,Cell and Sector ?

posted Mar 18, 2015 by Kishore Kumar Ponukumati

+2 votes

0 answers

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

+2 votes

0 answers

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

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

+2 votes

0 answers

What are the 4 configurations of CCE?

posted Dec 9, 2014 by Sridharan P

+2 votes

0 answers

What is the smallest and biggest segment size for Encoding ?

posted Dec 9, 2014 by Sridharan P