NPTEL 5G Wireless Standard Design Week 7 Assignment Answers 2024
1. Calculate the number of NULL bits in channel interleaving during PUCCH Format 2 transmission. Consider allocation of 10 PRBs over 1 OFDM symbol for PUCCH with a reference signal overhead of 1/3.
Note: Refer 6.3.2 Section, 38.211 Release-15 3GPP document for modulation order in PUCCH
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2. Calculate the spectral efficiency of a 1×2 SIMO system in case of unit signal power and unit noise variance. Consider the channel matrix H = [0.3−0.4j,0.6+0.8j]T [ Take, j2=−1]
- 0.32
- 1.08
- 1.17
- 2.03
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3. Select the Reference signals used in downlink
- CSI-RS
- SRS
- DMRS
- None of these
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4. Select the correct statements regarding CORESET 0
Note : Refer 38.211 Release-15 V15.10.0 3GPP document for Information on CORESET 0
- CORESET 0 is configured by MIB or SIB1
- UE assumes non-interleaved mapping for CORESET 0
- UE could use SI-RNTI to address CORESET 0
- DCI format 1_0 can be scheduled in CORESET 0 for sharing PDSCH resource Information
Answer :-
5. Rate-matched bit sequence in PUCCH is given as 101001011001011100011101001011110111000111000100. Perform channel interleaving on the given bits and provide the output bit sequence
- 010101110101011101111010110011100000001000110110
- 011101111010111000001011101101010100010001101100
- 101011101111101011000010100011100110010001101100
- 101011100100010000101110011101111101010001101100
Answer :-
6. Select the UCI lengths for which segmentation can be possible on UCI bits
- 256
- 410
- 1013
- 1024
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7. Caculate CRC bits for the UCI bit sequence given as 1110010111011011
- 010110
- 100010
- 110000
- 000100
Answer :-
8. Name the functional block that represents following psuedo code in PUCCH that takes input sequence as d0,d1,d2,….,dN−1 and output the sequence y0,y1,y2,….,yN−1
Note: Refer 38.212 Release-15 3GPP document for PUCCH processing
- Rate Matching
- Channel Interleaving
- Polar Encoding
- Sub-block interleaving
Answer :-
9. Select the channels that carry UCI
- PUSCH
- PRACH
- PUCCH
- PDSCH
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