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Conference Paper
Sum Spectral Efficiency Maximization in Cell-Free Millimeter-Wave Massive MIMO Systems
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- Authors
- Minhyun Kim, Seung-Eun Hong, Jee-Hyeon Na
- Issue Date
- 2021-10
- Citation
- International Conference on Information and Communication Technology Convergence (ICTC) 2021, pp.1600-1602
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- We consider the hybrid beamforming design for cell-free millimeter-wave massive multiple-input multiple-output (MIMO) systems. Sum spectral efficiency maximization problem is formulated and solved by the two-step approach that first determines the analog beamformers maximizing sum of beamforming gains, and then obtains the digital precoders by using the generalized power iteration based algorithm. System-level simulation results demonstrate that the proposed method outperforms the conventional methods including maximum ratio transmission (MRT) and zero-forcing (ZF) precodings.
- KSP Keywords
- Conventional methods, Efficiency maximization, Massive MIMO system, Massive multiple-input multiple-output (MIMO) systems, Maximum Ratio Transmission, Power iteration, Spectral efficiency(SE), Zero forcing(ZF), beamforming design, cell-free, hybrid beamforming