Hybrid Precoder Using Stiefel Manifold Optimization for Mm-Wave Massive MIMO System

Round 1

Reviewer 1 Report

A lot of information is missing regarding the correlation of the spectral efficiency with the number of users and the BER. It is not clear if the results that are depicted are considered for a single user case. Moreover, some metric regarding the optimization is mission (e.g. RMSE).

 

A.     Vizziello, P. Savazzi and K. R. Chowdhury, "A Kalman Based Hybrid Precoding for Multi-User Millimeter Wave MIMO Systems," in IEEE Access, vol. 6, pp. 55712-55722, 2018, doi: 10.1109/ACCESS.2018.2872738.

B.      NEHA, Naresh Kumar; KOCHHAR, Aarti. Efficient Channel Estimation in mm Wave Massive MIMO Using Hybrid Beamforming. In: Proceedings of First International Conference on Computational Electronics for Wireless Communications: ICCWC 2021. Springer Nature, 2022. p. 87.

C.       SINGH, Divya. Performance of Kalman-Based Precoding in Millimeter-Wave Communication. In: Proceedings of First International Conference on Computational Electronics for Wireless Communications. Springer, Singapore, 2022. p. 645-653.

D.      DURGA, A. Mounika; HUSSAIN, Shaik Jakeer. Optimization of Channel Capacity of MmWave Massive MIMO Using Hybrid Precoding. In: Proceedings of First International Conference on Computational Electronics for Wireless Communications. Springer, Singapore, 2022. p. 615-625.

E.       H. Huang, Y. Song, J. Yang, G. Gui and F. Adachi, "Deep-Learning-Based Millimeter-Wave Massive MIMO for Hybrid Precoding," in IEEE Transactions on Vehicular Technology, vol. 68, no. 3, pp. 3027-3032, March 2019, doi: 10.1109/TVT.2019.2893928.

F.       Z. Gao, C. Hu, L. Dai and Z. Wang, "Channel Estimation for Millimeter-Wave Massive MIMO With Hybrid Precoding Over Frequency-Selective Fading Channels," in IEEE Communications Letters, vol. 20, no. 6, pp. 1259-1262, June 2016, doi: 10.1109/LCOMM.2016.2555299.

G.      W. Ma, C. Qi, Z. Zhang and J. Cheng, "Sparse Channel Estimation and Hybrid Precoding Using Deep Learning for Millimeter Wave Massive MIMO," in IEEE Transactions on Communications, vol. 68, no. 5, pp. 2838-2849, May 2020, doi: 10.1109/TCOMM.2020.2974457.

H.      A. M. Elbir and A. K. Papazafeiropoulos, "Hybrid Precoding for Multiuser Millimeter Wave Massive MIMO Systems: A Deep Learning Approach," in IEEE Transactions on Vehicular Technology, vol. 69, no. 1, pp. 552-563, Jan. 2020, doi: 10.1109/TVT.2019.2951501.

 

 

Author Response

Dear reviewer,

Thank you for giving us the chance to revise our manuscript. Furthermore, the comments were essential to improve the quality of the paper. We have revised the current research article in the vision of your useful suggestions and comments. We hope our revision has enhanced the worth of the paper to a level of your satisfaction. Number-wise answers to their specific comments/suggestions/queries are given in the attached file. 

Sincerely 

Author Response File: Author Response.pdf

Reviewer 2 Report

The paper presents a hybrid precoder using stiefel manifold optimization for mmwave massive MIMO systems. The paper is interesting, however some matters need to be addressed before publication.

1. A better explanation of your contribution needs to be added in the Introduction Section. Please set differences of your work with respect to previous work. Please highligh the advantages, benefits and contributions of the new tecnique and results.

2. Provide more details of the methodology used.

3. There is a lot of papers dealing with this topic. Please cite references dealing with this topic.

4. It is needed a better description of the results. Please highligh the benefits, the advantages and contributions of your proposal.

Author Response

Dear reviewer,

Thank you for giving us the chance to revise our manuscript. Furthermore, the comments were essential to improve the quality of the paper. We have revised the current research article in the vision of your useful suggestions and comments. We hope our revision has enhanced the worth of the paper to a level of your satisfaction. Number-wise answers to their specific comments/suggestions/queries are given in the attachment.

Sincerely.

Author Response File: Author Response.pdf

Reviewer 3 Report

The paper is original and organized well.

The comparison table should contain more number of existing references and the authors have referred more than 34 papers, so it is advised authors to compare the existing work with recent number of similar works.

Section 4.1- Line 280, how come it is [79]... please verify.

Conclusions could be more clear and enhanced. Try to elaborate it precisely.

Please check whether millimeter could be written as "mm-wave" or "Mm-wave" 

Correct the sentence with small/ capital case in the caption and also in the whole document for these kind of errors.

Example: Figure 3: spectral efficiency Proposed of Algorithm.

It is advised authors to proofread the whole document for sentence case errors and grammatical errors.

Author Response

Dear reviewer,

Thank you for giving us the chance to revise our manuscript. Furthermore, the comments were essential to improve the quality of the paper. We have revised the current research article in the vision of your useful suggestions and comments. We hope our revision has enhanced the worth of the paper to a level of your satisfaction. Number-wise answers to their specific comments/suggestions/queries are given in the attachment.

sincerely.

Author Response File: Author Response.pdf