Discuss Huawei H35-481_V2.0 Exam Topic 1 Question 70

Which of the following statements about NR subcarriers are incorrect?

AThe larger the subcarrier spacing, the larger the number of symbols.

BThe smaller the subcarrier spacing, the larger the CP length and the more suitable it becomes for wide coverage.

CThe smaller the subcarrier spacing, the lower the power spectral density.

DThe larger the subcarrier spacing, the larger the slot length.

Suggested Answer: A, B, D

The statement A is incorrect. The larger the subcarrier spacing [1], the shorter the symbol duration on each subcarrier, not the larger number of symbols. Statement B is also incorrect. The larger the subcarrier spacing [1], the larger the CP length and the more suitable it becomes for wide coverage. Statement C is correct. The smaller the subcarrier spacing, the lower the power spectral density. Statement D is incorrect. The larger the subcarrier spacing [1], the shorter the slot length.

1. A novel timing and frequency offset estimation algorithm for filtered ...

https://asp-eurasipjournals.springeropen.com/articles/10.1186/s13634-020-00696-1

Extended Cyclic Prefix - an overview | ScienceDirect Topics

https://www.sciencedirect.com/topics/engineering/extended-cyclic-prefix

5G NR Numerology - Subcarrier Spcaing (SCS) - Techplayon

http://www.techplayon.com/5g-nr-numerology-subcarrier-spcaing-scs/

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21 comments · newest first

Dorthy 2 days ago

Right, B could be misleading. Coverage depends on many factors.

Willard 7 days ago

B is tricky. Smaller spacing does increase CP length, but not always better for coverage.

Vicki 12 days ago

I agree, A seems off. Larger spacing reduces symbol count.

Kattie 18 days ago

I think A is incorrect. More spacing means fewer symbols.

Reena 23 days ago

So, A and B are definitely wrong.

Stefany 28 days ago

Exactly! D aligns with my understanding of NR.

Caprice 1 month ago

I feel D is correct. Larger spacing does lead to longer slots.

Reena 1 month ago

C is tricky. Smaller spacing should increase density, not lower it.

Pamella 1 month ago

Right! B is misleading, it confuses coverage.

Lindsey 2 months ago

B seems off too. Smaller spacing doesn't mean longer CP.

Reena 2 months ago

Agreed, A doesn't make sense.

Stefany 2 months ago

I think A is incorrect. More spacing means fewer symbols.

Jeanice 2 months ago

D is also wrong, larger spacing actually shortens slot length.

Karl 2 months ago

Wait, are we sure about C? Lower spacing means lower power density?

Tuyet 2 months ago

B sounds right to me, smaller spacing helps with coverage.

Justine 3 months ago

I agree with A, that one’s off.

Ciara 3 months ago

A is definitely incorrect. More spacing means fewer symbols.

Hayley 3 months ago

I remember that smaller subcarrier spacing can lead to higher power spectral density, so option C seems off to me.

Celestina 3 months ago

I practiced a similar question where we had to identify incorrect statements about NR subcarriers, and I think option A might be wrong.

Olen 3 months ago

I feel like we discussed something about CP length and subcarrier spacing in class, but I can't recall the exact relationship.

Remona 4 months ago

I think I remember that larger subcarrier spacing actually means fewer symbols, but I'm not entirely sure.

Huawei H35-481_V2.0 Exam - Topic 1 Question 70 Discussion