AI 中文总结
该研究提出开放文献首种多子载波大规模MU-MIMO-OFDM检测器，利用波束空间稀疏性与频域相关性实现面积功耗缩减，基于22FDX工艺研制的ASIC能效达39pJ/b，为同类最优。
AI 中文摘要
本文提出了开放文献中首次报道的多子载波大规模多用户（MU）多输入多输出（MIMO）正交频分复用（OFDM）数据检测器。通过利用信道的波束空间稀疏性和频域（FD）相关性，该设计实现了最高达3倍的面积与功耗缩减。其支持U=8个用户设备、B=64个基站天线，可计算QPSK至256-QAM的软输出，并行处理16个子载波。所研制的22FDX ASIC核心单元面积为1.3mm²，功耗286mW，在0.8V核心电压下实现7.3Gbps吞吐量，能效达39pJ/b，处于同类最优水平。
英文摘要
We present the first multi-subcarrier massive multi-user (MU) multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) data detector reported in the open literature. By exploiting the channel's beamspace sparsity and frequency-domain (FD) correlation, we achieve up to 3x area and power reduction. Our design supports U=8 user equipments and B=64 basestation antennas, computes soft outputs for QPSK to 256-QAM, and processes 16 subcarriers in parallel. The fabricated 22FDX ASIC has a core cell area of 1.3mm$^2$, consumes 286mW, and delivers a throughput of 7.3Gbps at 0.8V core voltage, achieving best-in-class energy efficiency of 39pJ/b.
CommentsPresented at the 2026 IEEE/JSAP Symposium on VLSI Technology & Circuits
