.png){kind=icon}
返回
Movable-Antenna Array Enhanced Beamforming: Achieving Full Array Gain With Null Steering
.png){kind=icon}
OA
AI
DOI：10.1109/LCOMM.2023.3323656.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Conventional beamforming with fixed-position antenna (FPA) arrays has a fundamental trade-off between maximizing the signal power (array gain) over a desired direction and simultaneously minimizing the interference power over undesired directions. To overcome this limitation, this letter investigates the movable antenna (MA) array enhanced beamforming by exploiting the new degree of freedom (DoF) via antenna position optimization, in addition to the design of antenna weights. We show that by jointly optimizing the antenna positions vector (APV) and antenna weights vector (AWV) of a linear MA array, the full array gain can be achieved over the desired direction while null steering can be realized over all undesired directions, under certain numbers of MAs and null-steering directions. The optimal solutions for AWV and APV are derived in closed form, which reveal that the optimal AWV for MA arrays requires only the signal phase adjustment with a fixed amplitude. Numerical results validate our analytical solutions for MA array beamforming and show their superior performance to the conventional beamforming techniques with FPA arrays.
Keyword:
Array signal processing
Directive antennas
Interference
Phased arrays
Optimization
Linear antenna arrays
Receiving antennas
Movable antenna (MA) array
beamforming
array gain
null steering
期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
机构
引用论文
.png){kind=icon}
Modeling and Performance Analysis for Movable Antenna Enabled Wireless Communications支持移动天线的无线通信建模与性能分析OAAI
OAAI分享收藏分享收藏Millimeter-Wave NOMA With User Grouping, Power Allocation and Hybrid Beamforming具有用户分组、功率分配和混合波束成形的毫米波NOMA
OAAI
OAAI分享收藏
查看更多内容