数字预失真器OP6180在宏基站中的应用
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摘要
数字预失真技术的高性能、低成本、低复杂度和可移植性的特点被广泛用于无线通信宏基站系统中。Optichron公司的OP6180数字预失真处理器将峰均比抑制技术与数字预失真技术相结合,使得整个系统扩大射频功率放大器的线性工作范围,改善无线基础设备的效率和信号品质。OP6180支持2G、3G和4G通信,为高效率高线性Doherty类功放提供了解决方案,使得ACPR可获得30 dB左右的改进。介绍了OP6180的系统框架及工作原理,并提供了实际应用中相关的软硬件设计。实测结果表明,OP6180对消效果明显,性能稳定,具有很好的实用价值。
The high performance, low cost, low complexity and portability of digital pre-distortion technology are widely used in wireless communication macro basestation systems. Optichron's OP6180 digital pre-distortion processor combines peak-to-average ratio suppression with digital pre-distortion technology, enabling the entire system to extend the linear operating range of RF power amplifiers,improving the efficiency and signal quality of wireless infrastructure. The OP6180 supports 2 G, 3 G, and 4 G communications, providing a solution for high-efficiency, high-linearity Doherty-type power amplifiers,enabling ACPR to achieve improvements of around 30 dB. The system framework and working principle of OP6180 are introduced, and the related software and hardware design in practical application is provided.The measured results indicate that OP6180 has obvious effect on cancellation and stable performance, and has good practical value.
The high performance, low cost, low complexity and portability of digital pre-distortion technology are widely used in wireless communication macro basestation systems. Optichron's OP6180 digital pre-distortion processor combines peak-to-average ratio suppression with digital pre-distortion technology, enabling the entire system to extend the linear operating range of RF power amplifiers,improving the efficiency and signal quality of wireless infrastructure. The OP6180 supports 2 G, 3 G, and 4 G communications, providing a solution for high-efficiency, high-linearity Doherty-type power amplifiers,enabling ACPR to achieve improvements of around 30 dB. The system framework and working principle of OP6180 are introduced, and the related software and hardware design in practical application is provided.The measured results indicate that OP6180 has obvious effect on cancellation and stable performance, and has good practical value.
引文
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[2]杨光,李晓东,胡啸等.宽带Chrip信号激励下功放数字预失真补偿[J].微波学报,2018(05):49-53.YANG Guang,LI Xiao-dong,HU Xiao,YU Zhen-kun Digital Predistortion Compensation of Power Amplifier Excited by Broadband Chrip Signal[J].Journal of Microwaves,2018(05):49-53.
[3]郑晓林,原玲,郝禄国.Doherty功放的数字预失真技术研究[J].计算机工程与应用,2011,47(20):144-146.ZHEN Xiao-lin,YUAN Ling,HAO Lu-guo.Research on Digital Predistortion Technology of Doherty Power Amplifier[J].Computer Engineering and Applications,2011,47(20):144-146.
[4]李艳超.宽带无线通信数字预失真器的研究与设计[D].济南:山东大学,2014:21-28.LI Yan-chao.Research and Design of Digital Predistorter for Broadband Wireless Communication[D].Jinan:Shandong University,2014:21-28.
[5]安亚娟.宽带MIMO-OFDM系统数字预失真关键技术研究[D].西安:西安电子科技大学,2015:53-59.AN Ya-juan.Research on Key Technology of Digital Predistortion in Broadband MIMO-OFDM System[D]Xi'an:Xi'an University of Electronic Science and Technology,2015:53-59.