Gradient-Adaptive 2-D LUT Method for 6G Flexible-Duplex
0 ENGINEERING, ELECTRICAL & ELECTRONIC
引用次数: 0
Abstract
In this letter, we propose a novel self-interference (SI) cancellation solution for asymmetric in-band full-duplex (IBFD) systems, where the downlink (DL) signals are noncontiguously aggregated within the available band. The method builds on a Hammerstein model with parallel spline-interpolated 2-D lookup tables (LUTs), together with efficient gradient-descent parameter learning rules. The provided RF measurement results harnessing a GaN Doherty power amplifier (PA) at 3.5 GHz demonstrate digital SI cancellation levels up to 35 dB, with substantially reduced processing complexity compared with the reference polynomial model. These methods and results pave the way toward enhanced duplexing capabilities and flexibility in the emerging 6G era.用于 6G 灵活双工的梯度自适应 2-D LUT 方法
在这封信中，我们为非对称带内全双工（IBFD）系统提出了一种新的自干扰（SI）消除解决方案，在这种系统中，下行链路（DL）信号在可用频带内非连续聚合。该方法基于哈默斯坦模型和并行拼接插值的二维查找表（LUT），以及高效的梯度-后裔参数学习规则。利用 GaN Doherty 功率放大器 (PA) 在 3.5 GHz 频率下进行的射频测量结果表明，数字 SI 消除水平高达 35 dB，与参考多项式模型相比，处理复杂度大大降低。这些方法和结果为在新兴的 6G 时代增强双工能力和灵活性铺平了道路。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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