arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2501.00366eess.SP
收藏

5G NR大规模MIMO无线电中的预编码器实现与优化

Precoder Implementation and Optimization in 5G NR Massive MIMO Radio

Kalyani Bhukya, Shahid Aamir Sheikh, Radha Krishna Ganti

AI总结:

本文在IIT Madras自研5G测试平台的RRH中实现并优化了16、32、64通道线性预编码器,在500微秒时隙内完成信道矩阵与用户数据的矩阵乘法,展示了低DSP和BRAM占用及1.2 Gbps吞吐量。

摘要:

5G新空口(NR)的演进为用户带来了信号强度和服务质量的显著提升。通过将多输入多输出(MIMO)系统集成到通信中,可以在多个天线上同时传输多个数据流。此外,在MIMO系统中引入预编码可实现更高的数据速率和频谱效率。在无线网络中,预编码器用于引导针对特定用户的高增益波束。本文重点研究了在印度理工学院马德拉斯分校自主开发的5G测试平台的远端射频单元(RRH)中实现16、32和64通道线性预编码器。这些预编码器包括一个用于存储信道矩阵的存储模块和一个用于在500微秒的时隙时长内执行信道矩阵与用户数据之间矩阵乘法的乘法器模块。该系统在(16×8)、(32×8)和(64×8)天线-层配置下分别展示了9.75%、19.5%和39%的DSP利用率,同时将块RAM(BRAM)使用率保持在2.28%、3.91%和7.16%以内。此外,在四个活动层下实现1.2 Gbps的吞吐量,凸显了该系统在硬件约束下的优化性能。

英文摘要:

The evolution of 5G New Radio (NR) has brought significant improvements in signal strength and service quality for users. By integrating Multiple Input Multiple Output (MIMO) systems into communications, multiple data streams can be transmitted simultaneously across multiple antennas. Additionally, the incorporation of precoding in MIMO systems enables enhanced data rates and spectral efficiency. In wireless networks, precoders are used to steer high-gain beams intended for specific users. This paper focuses on the implementation of 16, 32, and 64 channel linear precoders in the Remote Radio Head (RRH) of the indigenously developed 5G testbed at IIT Madras. These precoders include a memory module to store channel matrices and a multiplier module to perform matrix multiplications between the channel matrices and user data within a slot duration of 500 microseconds. The system demonstrates DSP utilization levels of 9.75%, 19.5%, and 39% for (16 x 8), (32 x 8), and (64 x 8) antenna-layer configurations, respectively, while maintaining Block RAM (BRAM) usage within 2.28%, 3.91%, and 7.16%. Additionally, a throughput of 1.2 Gbps with four active layers highlights the system's optimized performance under hardware constraints.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑