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Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?

Abstract: 

In this paper we study the spectral efficiency (SE) of a point-to-point massive multiple-input multiple-output system (P2P-massive MIMO) with limited radio frequency (RF) chains, i.e., analog-to-digital/ digital-to-analog (D2A/A2D) modules, at the transceivers. The resulting architecture is known as hybrid beamforming, where the joint analog and digital beamforming optimization maximizes the SE. We analyze the SE of the system by keeping the number of RF-chains low, but placing analog amplifiers at different paths. Conventional hybrid beamforming architecture uses the amplifiers right after the D2A modules. However, placing them at the phase shifters or at the antennas can affect the SE of hybrid beamforming. We study the optimal placement of the analog amplifiers and pinpoint the amount of loss in case of misplaced amplifiers.

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Paper Details

Authors:
Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin
Submitted On:
9 May 2019 - 9:43am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Yasemin Karacora
Paper Code:
4903
Document Year:
2019
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Document Files

Poster_ICASSP_2019.pdf

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[1] Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin, "Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?", IEEE SigPort, 2019. [Online]. Available: http://sigport.org/4205. Accessed: Sep. 21, 2019.
@article{4205-19,
url = {http://sigport.org/4205},
author = {Yasemin Karacora; Ali Kariminezhad; Aydin Sezgin },
publisher = {IEEE SigPort},
title = {Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?},
year = {2019} }
TY - EJOUR
T1 - Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?
AU - Yasemin Karacora; Ali Kariminezhad; Aydin Sezgin
PY - 2019
PB - IEEE SigPort
UR - http://sigport.org/4205
ER -
Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin. (2019). Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?. IEEE SigPort. http://sigport.org/4205
Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin, 2019. Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?. Available at: http://sigport.org/4205.
Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin. (2019). "Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed?." Web.
1. Yasemin Karacora, Ali Kariminezhad, Aydin Sezgin. Hybrid Beamforming: Where Should the Analog Power Amplifiers be Placed? [Internet]. IEEE SigPort; 2019. Available from : http://sigport.org/4205