Joint Port Selection and Beamforming Design for Fluid Antenna Assisted Integrated Data and Energy Transfer
IEEE Wireless Communications Letters(2024)
摘要
Integrated data and energy transfer (IDET) has been of fundamental importance
for providing both wireless data transfer (WDT) and wireless energy transfer
(WET) services towards low-power devices. Fluid antenna (FA) is capable of
exploiting the huge spatial diversity of the wireless channel to enhance the
receive signal strength, which is more suitable for the tiny-size low-power
devices having the IDET requirements. In this letter, a multiuser FA assisted
IDET system is studied and the weighted energy harvesting power at energy
receivers (ERs) is maximized by jointly optimizing the port selection and
transmit beamforming design under imperfect channel state information (CSI),
while the signal-to-interference-plus-noise ratio (SINR) constraint for each
data receiver (DR) is satisfied. An efficient algorithm is proposed to obtain
the suboptimal solutions for the non-convex problem. Simulation results
evaluate the performance of the FA-IDET system, while also demonstrate that FA
outperforms the multi-input-multi-output (MIMO) counterpart in terms of the
IDET performance, as long as the port number is large enough.
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关键词
Fluid antenna (FA),integrated data and energy transfer (IDET),port selection,beamforming design
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