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학술대회 Performance Analysis of Cell-Free mmWave Massive MIMO with Low-Resolution DAC Quantization
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저자
홍승은
발행일
202108
출처
International Conference on Ubiquitous and Future Networks (ICUFN) 2021, pp.192-194
DOI
https://dx.doi.org/10.1109/ICUFN49451.2021.9528671
협약과제
21HH1100, [통합과제] 5G NR 기반 지능형 오픈 스몰셀 기술 개발, 나지현
초록
This paper focuses on the downlink of a cell-free massive multiple-input multiple-output (MIMO) system in which each of the access nodes (ANs) is equipped with low-resolution digital-to-analog converters (DACs). In particular, the system is assumed to operate over mmWave frequency with practical considerations such as pilot contamination and hybrid precoding scheme. By mimicking the effect of few-bit DACs with the additive quantization noise model (AQNM), a tight approximate rate expression is derived and analyzed with some simulation results, which provide deep understanding of the impacts from the few-bit quantization as well as channel estimation error on the performance of cell-free mmWave massive MIMO.
키워드
Additive quantization noise model, Cell-Free massive MIMO, Hybrid precoding, Low-Resolution DAC, mmWave
KSP 제안 키워드
Channel estimation(CE), DAC quantization, Digital to Analog Converter, Hybrid Precoding, Massive multiple-input multiple-output (MIMO) systems, Noise Model, Performance analysis, Quantization Noise, Rate expression, cell-free, channel estimation errors(CSEs)