Effective Linearization of Millimeter-Wave Power Amplifiers Using LUT-Based Digital Predistortion (DPD)

被引：1

作者：

Somasundaram, Gokul ^{[1
]}

Mayeda, Jill C. ^{[1
]}

Lie, Donald Y. C. ^{[1
]}

Lopez, Jerry ^{[1
,2
]}

机构：

[1] Texas Tech Univ, ECE Dept, Lubbock, TX 79409 USA

[2] NoiseFigure Res NFR, Renton, WA USA

来源：

PROCEEDINGS OF THE 2022 IEEE TEXAS SYMPOSIUM ON WIRELESS AND MICROWAVE CIRCUITS AND SYSTEMS (WMCS) | 2022年

关键词：

5G; Digital Pre-Distortion (DPD); Linearization; Millimeter-Wave (mm-Wave); MIMO (Multiple-Input Multiple-Output); pHEMT (pseudomorphic High Electron Mobility Transistor); Power Amplifiers (PAs);

D O I：

10.1109/WMCS55582.2022.9866349

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we present an effective Digital Pre-Distortion algorithm (DPD) and successfully linearized three millimeter-wave (mm-Wave) power amplifiers (PAs). The DPD algorithm computes look-up tables (LUT) to estimate the PA co-efficients to pre-distort the input signal. All PAs of various gain and P-OUT after DPD have achieved Adjacent Channel Leakage Ratio (ACLR) improvement of around 13 dB to - 50 dBc at 24 GHz, and with Error Vector Magnitude (EVM) reduction of about 1.5% to 5.5%. The LUT DPD algorithm works well for 256 QAM (Quadrature Amplitude Modulation) LTE (Long Term Evolution) modulated input signal with a bandwidth of 20 MHz, and a peak-to-average-power-ratio (PAPR) of 8.7 dB.

引用

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