.png){kind=icon}
.png){kind=icon}
Return
DOA estimation for movable antenna array systems under gain and phase errors
.png){kind=icon}
PRE
AI
DOI：10.1016/j.phycom.2025.102808.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Movable antenna (MA) technology has become a promising technology in the field of wireless communications. By adjusting the spatial position of the antennas in a confined region, more accurate direction-of-arrival (DOA) estimation can be achieved. This paper investigates the phase errors and gain fluctuations induced by the movement of MA during operation. We develop a method for DOA estimation in MA array systems affected by gain and phase errors. This method employs the covariance matrix of the array output signals to accurately estimate gain errors. By leveraging the Hadamard product of the covariance matrix, we extract quantities that are insensitive to phase errors, thereby enabling accurate DOA estimation. In addition, we analyze the impact of antenna positioning at various locations on performance, as well as the effect of movement distance on the antenna. Based on these analyses, we propose a straightforward linear array reconfiguration method. Simulation results indicate that under low signal-to-noise ratio (SNR) conditions, the rearranged array exhibits superior performance compared to traditional array setups.
Keywords:
DOA estimation
Gain-phase error
Movable antenna array systems
Linear array reconfiguration
DOA estimation
Gain-phase error
Movable antenna array systems
Linear array reconfiguration
DOA estimation
Gain-phase error
Movable antenna array systems
Linear array reconfiguration
Journal
IF:
2.2
Papers:
360
Citations:
2.6K
Organization
No organization information available