MIMO with Analogue 1-bit Phase Shifters: A Quantum Annealing Perspective
<|reference_start|>MIMO with Analogue 1-bit Phase Shifters: A Quantum Annealing Perspective: In this letter, we study the analogue pre/post-coding vector design for a point-to-point multiple-input multiple-output (MIMO) system with 1-bit phase shifters. Specifically, we focus on the signal-to-noise ratio (SNR) maximization problem which corresponds to a combinatorial NP-hard due to the binary phase resolution. Two classical computation heuristics are proposed i.e., i) an 1-bit real-valued approximation of the optimal digital designs, and ii) an alternating optimization where a Rayleigh quotient problem is solved at each iteration. An iterative quantum annealing (QA)-based heuristic is also investigated, which outperforms classical counterparts and achieves near-optimal performance while ensuring polynomial time complexity. Experimental results in a real-world D-WAVE QA device validate the efficiency of the proposed QA approach.<|reference_end|>
@article{krikidis2024mimo,
    title={MIMO with Analogue 1-bit Phase Shifters: A Quantum Annealing Perspective},
    author={Ioannis Krikidis},
    journal={IEEE Wireless Communications Letters, 2024},
    year={2024},
    archivePrefix={arXiv},
    eprint={2403.16045},
    primaryClass={cs.IT math.IT}
}