no code implementations • 20 Jan 2024 • Shengyao Chen, Qi Feng, Longyao Ran, Feng Xi, Zhong Liu
To maximize the output signal-to-interference-plus-noise ratio (SINR) of receive array, we formulate the codesign of transmit beamforming and RIS-assisted receive beamforming into a nonconvex constrained fractional programming problem, and then propose an alternating minimization-based algorithm to jointly optimize the transmitor beamfmer, receive beamformer and RIS reflection coefficients.
1 code implementation • 15 Sep 2023 • Junkai Ji, Wei Mao, Feng Xi, Shengyao Chen
Direction of arrival (DOA) estimation employing low-resolution analog-to-digital convertors (ADCs) has emerged as a challenging and intriguing problem, particularly with the rise in popularity of large-scale arrays.
no code implementations • 16 Feb 2023 • Yikun Xiang, Feng Xi, Shengyao Chen
However, it is challenging to implement a low-complexity distributed MIMO radar due to the complex operations at both the receivers and the fusion center.
no code implementations • 14 Oct 2020 • Huizhang Yang, Mingliang Tao, Shengyao Chen, Feng Xi, Zhong Liu
Based on the low rank model, we show that two methods, i. e., principle component analysis and its robust variant, can be adopted to efficiently mitigate the artefact via processing in image domain.
no code implementations • 1 Oct 2020 • Feng Xi, Nir Shlezinger, Yonina C. Eldar
One of the reasons for this difficulty stems from the increased cost and power consumption required by analog-to-digital convertors (ADCs) in acquiring the multiple waveforms at the radar receiver.