https://scholars.lib.ntu.edu.tw/handle/123456789/576836
標題: | Efficient Interpolation Method for Wireless Communications and Signal Processing Applications | 作者: | Lin S.-C Chuang K Chang C.-W Chen J.-H. JAU-HORNG CHEN |
關鍵字: | 5G mobile communication systems; Digital radio; Frequency response; Interpolation; Power amplifiers; Radio frequency amplifiers; Signal processing; Arbitrary frequencies; Cubic-spline interpolation; Digital implementation; Implementation complexity; Instantaneous bandwidth; Radio frequency power; Signal processing applications; Wireless communications; Time domain analysis | 公開日期: | 2021 | 卷: | 69 | 期: | 5 | 起(迄)頁: | 2753-2761 | 來源出版物: | IEEE Transactions on Microwave Theory and Techniques | 摘要: | Interpolation involves the process of estimating values at positions in between the adjacent samples, which has very fundamental and applied implications in signal processing and communication systems. In this work, a new method of cubic spline interpolation (CSI) is proposed and derived mathematically from the input samples respecting the time-domain boundary conditions, and the corresponding piecewise polynomials are optimized in the frequency domain to achieve good spectral properties. A comparative analysis of several prior arts, including arbitrary frequency response polynomial (AFRP) and basis spline (B-spline) is also presented, giving a clear overview of the advantages associated with the proposed technique in terms of implementation complexity, latency, and in-band and out-of-band spectral performance. The measurement results with three different radio frequency (RF) power amplifier (PA) prototypes using an input stimulus comprised of different instantaneous bandwidth (iBW) carrier aggregated 5G new radio (NR) waveform are demonstrated to highlight the improved performance in the context of digital predistortion (DPD) correction. Finally, the architecture of the proposed method is illustrated, which is suitable for real-time high-speed digital implementation. ? 1963-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103284303&doi=10.1109%2fTMTT.2021.3061563&partnerID=40&md5=99ce18219df86614ca6fd754a2f2f6c5 https://scholars.lib.ntu.edu.tw/handle/123456789/576836 |
ISSN: | 189480 | DOI: | 10.1109/TMTT.2021.3061563 |
顯示於: | 工程科學及海洋工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。