Design and Test of Offset Quadrature Phase-Shift Keying Modulator with GF180MCU Open Source Process Design Kit

Round 1

Reviewer 1 Report

The paper proposes and explains the design of an Integrated Circuit (IC) and details the process of implementing the digital stage in OQPSK modulation in an IC. The paper is well written, the contribution is not really innovative but it provides some useful guidelines for researchers. Nevertheless, some parts of the paper must be improved:

1) Mandatory -> in the Introductions Section: At the end of this parts the authors should add a subsection where they describe the content of the paper and the main contributions.

2) Mandatory -> Table 2 must be resized.

3) Strongly Recommended -> After this sentence: "On the other hand, Efabless has pioneered the development of Caravel, a versatile system-on-chip (SoC) template that facilitates the seamless integration of digital, analog, or mixed systems alongside a RISC-V processor[6]"

The authors can cite other environments for development and verification of SoCs, described in these papers:

- https://www.mdpi.com/2079-9292/11/22/3704

- https://dl.acm.org/doi/10.1145/2435264.2435287

- https://ieeexplore.ieee.org/document/4395210

This gives to the reader a full panoramics in the field of design, simulation and verification of digital circuits and SoCs.

4) Mandatory -> Remove Section 8: Patents.

Author Response

"Please see the attachment."

Author Response File: Author Response.pdf

Reviewer 2 Report

Please find attached my review comments.

Comments for author File: Comments.pdf

The paper is well-written; however, it would benefit from multiple reviews by the authors to identify and correct any potential mistakes.

Author Response

"Please see the attachment."

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

The quality of the paper has been strongly improved. I recommended the publication as it is.

Reviewer 2 Report

I appreciate the authors for their meticulous reconsideration of the paper. Almost all of my concerns have been addressed in the revised version. I strongly recommend cross-referencing all figures, tables, sections, etc., as referenced in the paper. For example, in the last paragraph of the introduction section, there are several references to sections.