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首页> 外文会议>IEEE Eurasia Conference on Biomedical Engineering, Healthcare and Sustainability >FBS-based One-bit Precoding Scheme for Large-scale Multi-antenna Systems
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FBS-based One-bit Precoding Scheme for Large-scale Multi-antenna Systems

机译：用于大型多天线系统的基于FBS的单位预编码方案

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摘要

Spatial modulation (SM) is an important multi-antenna transmission technique. By encoding the data with additional spatial information, the spectral efficiency is enhanced without extra bandwidth. By extending the SM concept to the multiple-user in a massive multiple-input multiple-output (MU-M-MIMO) scenario, only one radio frequency (RF) is needed in the transmitter (Tx), which improves the energy efficiency. To further reduce the cost and power consumption, one-bit digitalto-analog converters (DACs) are adopted in the Tx RF chain at the expense of high precoding complexity to compensate the severe performance degradation caused by the nonlinear one-bit quantization distortion. In this paper, a low-complexity precoding scheme based on the forward-backward splitting (FBS) method is presented for the large-scale multi-antenna system with SM and quadrature-phase-shift-keying (QPSK) signaling. Preliminary simulation results show that, comparing to the other one-bit DAC based benchmark methods, the proposed precoder is able to achieve the same (or better) BER at a much lower computational complexity.
机译：空间调制（SM）是一种重要的多天线传输技术。通过使用额外的空间信息对数据进行编码，可以在没有额外带宽的情况下增强频谱效率。通过在大量多输入多输出（MU-M-MIMO）场景中将SM概念扩展到多个用户，发射器（TX）只需要一个射频（RF），从而提高了能量效率。为了进一步降低成本和功耗，在TX RF链中采用单位数字进行模拟转换器（DAC），以牺牲高预编码复杂度来补偿由非线性单位量化失真引起的严重性能下降。本文介绍了基于前后分离（FBS）方法的低复杂性预编码方案，用于具有SM和正交相移键控（QPSK）信令的大规模多天线系统。初步仿真结果表明，与其他基于DAC的基准测试方法相比，所提出的预编码器能够以更低的计算复杂性实现相同（或更好）的BER。

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