Movable Antenna Enabled Interference Network: Joint Antenna Position and Beamforming Design

This letter investigates the utility of movable antenna (MA) assistance for the multiple-input single-output (MISO) interference channel. We exploit an additional design degree of freedom provided by MA to enhance the desired signal and suppress interference so as to reduce the total transmit power...

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Published inIEEE wireless communications letters Vol. 13; no. 9; pp. 2517 - 2521
Main Authors Wang, Honghao, Wu, Qingqing, Chen, Wen
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.09.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna design
antenna position optimization
Antennas
Array signal processing
Beamforming
Convexity
Design optimization
Frequency reuse
Interference
Iterative algorithms
MISO communication
MISO interference channel
Movable antenna (MA)
Optimization
power minimization
Signal to noise ratio
Transmitting antennas
Vectors
Online AccessGet full text
ISSN2162-2337
2162-2345
2162-2345
DOI10.1109/LWC.2024.3423412

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Abstract This letter investigates the utility of movable antenna (MA) assistance for the multiple-input single-output (MISO) interference channel. We exploit an additional design degree of freedom provided by MA to enhance the desired signal and suppress interference so as to reduce the total transmit power of interference network. To this end, we jointly optimize the MA positions and transmit beamforming, subject to the signal-to-interference-plus-noise ratio constraints of users. To address the non-convex optimization problem, we propose an efficient iterative algorithm to alternately optimize the MA positions via successive convex approximation method and the transmit beamforming via second-order cone program approach. Numerical results demonstrate that the proposed MA-enabled MISO interference network outperforms its conventional counterpart without MA, which significantly enhances the capability of inter-cell frequency reuse and reduces the complexity of transmitter design.
AbstractList This letter investigates the utility of movable antenna (MA) assistance for the multiple-input single-output (MISO) interference channel. We exploit an additional design degree of freedom provided by MA to enhance the desired signal and suppress interference so as to reduce the total transmit power of interference network. To this end, we jointly optimize the MA positions and transmit beamforming, subject to the signal-to-interference-plus-noise ratio constraints of users. To address the non-convex optimization problem, we propose an efficient iterative algorithm to alternately optimize the MA positions via successive convex approximation method and the transmit beamforming via second-order cone program approach. Numerical results demonstrate that the proposed MA-enabled MISO interference network outperforms its conventional counterpart without MA, which significantly enhances the capability of inter-cell frequency reuse and reduces the complexity of transmitter design.
Author Wu, Qingqing
Wang, Honghao
Chen, Wen
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10.1109/MCOM.001.1900107
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SubjectTerms Antenna design
antenna position optimization
Antennas
Array signal processing
Beamforming
Convexity
Design optimization
Frequency reuse
Interference
Iterative algorithms
MISO communication
MISO interference channel
Movable antenna (MA)
Optimization
power minimization
Signal to noise ratio
Transmitting antennas
Vectors
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Title Movable Antenna Enabled Interference Network: Joint Antenna Position and Beamforming Design
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