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Peer-Review Record

Intelligent Reflecting Surface-Based Non-LOS Human Activity Recognition for Next-Generation 6G-Enabled Healthcare System

Sensors 2022, 22(19), 7175; https://doi.org/10.3390/s22197175
by Umer Saeed 1,*, Syed Aziz Shah 1, Muhammad Zakir Khan 2, Abdullah Alhumaidi Alotaibi 3, Turke Althobaiti 4, Naeem Ramzan 5 and Qammer H. Abbasi 2
Reviewer 1: Anonymous
Reviewer 2:
Sensors 2022, 22(19), 7175; https://doi.org/10.3390/s22197175
Submission received: 24 August 2022 / Revised: 14 September 2022 / Accepted: 19 September 2022 / Published: 21 September 2022
(This article belongs to the Special Issue Radar Sensing for Health Monitoring)

Round 1

Reviewer 1 Report

This paper investigates the intelligent reflecting surface (IRS) to assure high accuracy activity monitoring in complicated environments where traditional microwave sensing is ineffective. The critical aspects, from my point of view, are the following ones:

Problem 1: In the Reference, even if there is not a lot of recent interest in this topic, the authors could make clear why such type of research is important for academics in Introduction.

Problem 2The quality of the Figure should be carefully revised to improve the resolution.

Problem 3As shown in Table 3, the overall accuracy significantly improved through the IRS-ON scenario. However, the training time is also increased in some cases. More detailed interpretation should be given.

Problem 4: As shown in Section 6, the accuracy and training time is considered to verified the characteristic of the proposed scheme. However, this is not enough to verify the effectiveness of the proposed scheme.

Problem 5What are the disadvantages of your proposed methods?

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Please see the attached file.

Comments for author File: Comments.pdf

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

The manuscript has been comprehensively revised according to the reviewer’s comments, and it can be accepted in present form.

Reviewer 2 Report

The authors have addressed my concerns, no further comments.

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