A 2.86Gb/s Fully-Flexible MU-MIMO Processor for Jointly Optimizing User Selection, Power Allocation, and Precoding in 28nm CMOS Technology
- Title
- A 2.86Gb/s Fully-Flexible MU-MIMO Processor for Jointly Optimizing User Selection, Power Allocation, and Precoding in 28nm CMOS Technology
- Authors
- Moon, Seungsik; Lee, Namyoon; Lee, Youngjoo
- Date Issued
- 2022-04-25
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Abstract
- In 5G networks, as growing data usage exponentially, mobile operators need to increase network capacity. To increase the spectral efficiency of massive multiple-input multiple-output (MIMO) system, it is essential to enlarge the number of co-scheduled user equipments (UEs). As increasing the number of co-scheduled UEs up to the number of base station (BS) antennas, the conventional linear precoding schemes such as zero-forcing and maximum ratio transmission show poor capacity, as shown in Fig. 1. As a result, joint user selection, power allocation, and beamforming schemes, including the rank-adaptation zero-forcing (RA-ZF) and generalized power iteration precoding (GPIP) algorithms, are proposed for large-scale massive MIMO systems. However, the prior works on massive MIMO baseband architectures [1]-[4] are no longer suitable for these advanced algorithms; because they do not consider user selection or power allocation. Consequently, it is crucial to develop energy-and computationally efficient BS architecture that realizes the advanced algorithms to achieve a high spectral efficiency gain.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/116152
- Article Type
- Conference
- Citation
- 43rd Annual IEEE Custom Integrated Circuits Conference, CICC 2022, 2022-04-25
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