Linearization of Concurrent Dual-Band Power Amplifier Based on 2D-DPD Technique
Linearization of Concurrent Dual-Band Power Amplifier Based on 2D-DPD Technique
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DOI：
10.1109/lmwc.2011.2170669
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发表时间：
2011-10
影响因子：
3
通讯作者：
S. Bassam;Wen-hua Chen;M. Helaoui;F. Ghannouchi;Zhenghe Feng
中科院分区：
文献类型：
--
作者：
S. Bassam;Wen-hua Chen;M. Helaoui;F. Ghannouchi;Zhenghe Feng
本文介绍了一种用于补偿双频PA非线性的二维数字预失真技术。两个不同的多载波WCDMA信号具有超过1 GHz的频率间隔，同时采用驱动PA和验证线性化性能。实验结果表明，该技术将相邻信道功率比限制在-46 dBc以下，对于两个频段同时提高了12 dB以上。
This letter reports a two-dimensional digital predistortion technique to compensate for the nonlinearity of a concurrent dual band PA. Two different multi-carrier WCDMA signals with more than 1 GHz frequency spacing are concurrently employed to drive the PA and verify the linearization performance. Experimental results show that the proposed technique bounds the adjacent channel power ratio to lower than -46 dBc, which is more than 12 dB improvement for both bands concurrently.