Joint Power Allocation and Constellation Rotation in Alamouti coded Interference Alignment in X-Channel with imperfect CSI

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

KHALEGHI BIZAKI H.; RAHIMI E.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Tabriz Journal of Electrical Engineering Year:2021 | Volume:51 | Issue:2 (96) Page(s): 243-254

Download Full-Text

View:

101

Download:

456

Cites:

Information Journal Paper

Title

Joint Power Allocation and Constellation Rotation in Alamouti coded Interference Alignment in X-Channel with imperfect CSI

Author(s)

KHALEGHI BIZAKI H. | RAHIMI E. | Issue Writer Certificate

Keywords

Interference alignment

Alamouti coding

Channel state information

Power Allocation

Constellation Rotation

Abstract

Interference alignment (IA) with Alamouti coding is an innovative method to increase the multiplexing gain and the diversity gain, simultaneously, in wireless Multiple-Input Multiple-Output (MIMO) systems. The main limitation of this method is requiring Perfect Channel state information (CSI) to perform the beamforming on transmitters and receivers signals. Contrary to the acceptable performance of Alamouti coding in perfect CSI conditions, its efficiency is severely reduced in imperfect CSI conditions. In order to overcome this shortcoming, this paper discusses about the effect of imperfect CSI on a two user MIMO X-channel which uses Interference alignment together with Alamouti coding. Also, a closed form solution is extracted for the received signal in an imperfect CSI scenario. Our analysis shows that when the variance of the CSI error is increased, the Bit Error Rate (BER) of system increases linearly. Also, we propose a joint Power Allocation (PA) and Constellation Rotation algorithm to improve the performance of system in an imperfect CSI scenario. Computer simulations show a desirable improvement in BER by using PA, Constellation Rotation and joint of them.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

KHALEGHI BIZAKI, H., & RAHIMI, E.. (2021). Joint Power Allocation and Constellation Rotation in Alamouti coded Interference Alignment in X-Channel with imperfect CSI. TABRIZ JOURNAL OF ELECTRICAL ENGINEERING, 51(2 (96)), 243-254. SID. https://sid.ir/paper/982738/en

Vancouver: Copy

KHALEGHI BIZAKI H., RAHIMI E.. Joint Power Allocation and Constellation Rotation in Alamouti coded Interference Alignment in X-Channel with imperfect CSI. TABRIZ JOURNAL OF ELECTRICAL ENGINEERING[Internet]. 2021;51(2 (96)):243-254. Available from: https://sid.ir/paper/982738/en

IEEE: Copy

H. KHALEGHI BIZAKI, and E. RAHIMI, “Joint Power Allocation and Constellation Rotation in Alamouti coded Interference Alignment in X-Channel with imperfect CSI,” TABRIZ JOURNAL OF ELECTRICAL ENGINEERING, vol. 51, no. 2 (96), pp. 243–254, 2021, [Online]. Available: https://sid.ir/paper/982738/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops