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艾渤, 艾渤①②, 杨知行①, 潘长勇①, 张涛涛①, 阳辉①
电子与信息学报,2007,29(7):1580~183,-0001,():
-1年11月30日
该文深入研究了OFDM系统中基于查询表LUT方法的HPA数字预失真技术。针对传统LUT方法收敛速度非常慢的不足,有关文献提出了相应的改进措施。该文从误码率BER,功率谱密度PSD和算法收敛速度几个方面进行了算法性能的仿真比较分析,指出以上算法存在的不足,并提出了新的改进方法,仿真及分析结果表明了该文提出改进方法在性能上的优越性。
OFDM, High Power Amplifier (, HPA), , Digital base-band pre-distortion, Look-up table
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【期刊论文】Improved LUT Technique for HPA Nonlinear Pre-Distortion in OFDM Systems
艾渤, AI BO, , YANG ZHI-XING, PAN CHANG-YONG, ZHANG TAO-TAO, WANG YONG and GE JIAN-HUA
,-0001,():
-1年11月30日
In this paper, we focus on the Look-up Table (LUT) technique for the compensation of HPA nonlinear distortion. An improved LUT method is proposed with better performance compared with conventional LUT technique in terms of convergence speeds, BER and total degradation (TD). It can get over 8 dB gain in out-of-band spectrum re-growth suppression and about 0.3 dB BER performance gain than conventional LUT technique with the same iteration times. Also, we propose an actual application of HPA with pre-distorter in OFDM transmitter.
HPA, nonlinear distortion, LUT, OFDM
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