An Innovative Method Based on Wavelet Analysis for Chipless RFID Tag Detection

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

- The main question addressed in the research is how to enable multitag detection in chipless RFID systems using an innovative method based on wavelet 

analysis. The proposed method involves processing scattered tag signals with wavelet analysis to obtain a time-frequency plot for code reading, with the 

ability to separate signals using independent component analysis when tags are too close. The study compares the proposed method with existing techniques 

like STMPM and STFT, demonstrating successful code reading with reduced computational requirements and shorter reading times. The research aims to validate 

the effectiveness of the proposed method through simulations and practical scenarios involving chipless RFID tag models and multitag detection scenarios.

 

However:

  - Provide a more detailed comparison with existing methods like STMPM and STFT, highlighting specific performance metrics such as computational efficiency, accuracy, and robustness.

  - Conduct sensitivity analysis on key parameters in the proposed method, such as window width and search step parameters, to assess their impact on code reading accuracy and computational efficiency.

  - Include a more extensive discussion on the limitations of the proposed method, potential sources of error, and strategies to mitigate these limitations in practical implementations.

  - Validate the proposed method with real-world chipless RFID systems and physical tag prototypes to assess its performance under varying environmental conditions and tag configurations.

  - Consider exploring alternative signal processing techniques or machine learning algorithms to further enhance multitag detection capabilities and improve the robustness of the system.

  - Compare experimentally your solution with the compared methods.

  - Why the correspondence author is not within the authors' e-mail?

 

Author Response

Dear Reviewer,

Thank you very much for your comments and professional advice. These opinion help to improve academic rigor and our article. Based on your suggestion and request, we have made corrected modifications on the revised manuscript. We would like to show the details in attachment.

Thank you very much for your attention and time. Look forward to hearing from you. 

Yours sincerely

Xueyuan Wang

31 May 2024

School of Information Engineering, Southwest University of Scinence and Technology

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

The manuscript entitled, "Innovative Method Based on Wavelet Analysis for Chipless RFID Tag Detection" has been reviewed. However, I have some comments and suggestions for the improvement of your manuscript, which are as follows:

1) In line 156, what does it mean by 'The tags are measured m times... or m antennas...'? 'm' is not mentioned anywhere. Please check it.

2) What kind of insulating substance is used? Please mention the substrate information.

3) What is the length and width of various sizes of your pattern? Mention it. And,actually, it looks like U-shaped but you mentioned it as C-shape. Is there any reason?

4) What kinds of tool did you use to realised U-shaped chipless tag?

5) What kind of code '1111' is used suddenly in line 221? Please mention it.

6) As mentioned in line 236, what kind of code is that for what purpose? Is that binary codes? if so, mention its pupose.

7) What is the significance of multitag simulation configuration with various distances? Please mention it.

8) What did you find when compared the time comlexity and run time?

9) I think, you don't need to mention the summary as a sub-section 5.3. It would better to make one paragraph showing significant performance.

10) You have not metioned the significant values or parameters taken from measurement in the conclusion section. Please mention important part only.

11) In the sub-section, 3.4 flowchart, you mentioned that "......ICA is constructed by multiple measurements. Multiple measurements can be achieved by using multiple readers,................."

But in your work, you haven't explained measurement results.

12) It would be better if you mentioned the significance and recent trends of the chipless tag because everything is becoming smaller and more compact.

13) Is it software-based work? If so, you have to mention it clearly in the whole manuscript.

There are many such instances of unclear and confusing expressions technically. You need to reorganize and rewrite them well.

Author Response

Dear Reviewer,

Thank you very much for your comments and professional advice. These opinion help to improve academic rigor and our article. Based on your suggestion and request, we have made corrected modifications on the revised manuscript. We would like to show the details in attachment.

Thank you very much for your attention and time. Look forward to hearing from you. 

Yours sincerely

Xueyuan Wang

31 May 2024

School of Information Engineering, Southwest University of Scinence and Technology

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

See attached

Comments for author File: Comments.pdf

Author Response

Dear Reviewer,

Thank you very much for your comments and professional advice. These opinion help to improve academic rigor and our article. Based on your suggestion and request, we have made corrected modifications on the revised manuscript. We would like to show the details in attachment.

Thank you very much for your attention and time. Look forward to hearing from you. 

Yours sincerely

Xueyuan Wang

31 May 2024

School of Information Engineering, Southwest University of Scinence and Technology

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

The authors have addressed most of the comments, hence, the paper have improved considerably.

Reviewer 2 Report

Comments and Suggestions for Authors

The manuscript entitled, "Innovative Method Based on Wavelet Analysis for Chipless RFID Tag Detection" has been revised/modified according to the suggested comments and feedback.  Therefore, I would like to recommend it be published.