基于LUT的HPA数字基带预失真方法研究

艾渤; 杨知行; 潘长勇; 张涛涛; 阳辉

doi:10.3724/SP.J.1146.2006.00023

基于LUT的HPA数字基带预失真方法研究

doi: 10.3724/SP.J.1146.2006.00023

基金项目:

博士后科学基金(2005038094)资助课题

计量
- 文章访问数: 3916
- HTML全文浏览量: 97
- PDF下载量: 1076
- 被引次数: 0
出版历程
- 收稿日期: 2006-01-05
- 修回日期: 2006-07-06
- 刊出日期: 2007-07-19

Research on HPA Digital Base-band Pre-distortion Technique Based on Look-up Table Method

摘要

摘要: 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。
- 正交频分复用;高功率放大器;数字基带预失真;查询表
Abstract: This paper focus on the research of LUT based digital pre-distortion techniques in OFDM systems. The defects of the conventional LUT based pre-distortion techniques are pointed out with the improved method proposed. The performance of the algorithms are compared and analyzed in terms of BER, PSD and the convergence speed. Simulation results and analysis demonstrate the better performance of the proposed method.

HTML全文

参考文献(1)

[1] [1] European Telecommunication Standard ETS 300 744. Digital broadcasting systems for television, sound and data services; Framing structure, channel coding and modulation for digital terrestrial television [S]. May 1996. [2] Tsinghua University. Terrestrial Digital Multimedia/ Television Broadcasting System. P.R.China Patent 00123597.4 [P] filed Aug.25, 2000, issued Mar.21, 2001. [3] Ai B, Ge J H, and Wang Y, et al.. Frequency offset estimation for OFDM in wireless communications [J].IEEE Trans. on Consumer Electronics.2004, 50(1):73-77 [4] Jayalath A D S and Tellambura C. Reducing the peak-to-average power ratio of orthogonal frequency division multiplexing signal through bit or symbol interleaving[J].Electronic Letters.2000, 36(12):1161-1163 [5] Andrea D A N, Lottici V, and Reggiannini R. Efficient digital predistortion in radio relay links with nonlinear power amplifiers[J].IEE Proceedings-Communications.2000, 147(3):175-179 [6] Kubo T, Fudaba N, and Ishikawa H, et al.. A highly efficient adaptive digital predistortion amplifier for IMT-2000 base stations[C][J].The 57th IEEE Semiannual Vehicular Technology Conference 2003, Jeju Korea, 22-25 April.2003, vol. 4:2206-2210 [7] Lei D, Zhou G T, and Morgan D R, et al.. A robust digital baseband predistorter constructed using memory polynomials [J].IEEE Trans. on Communications.2004, 52(1):159-165 [8] Rapp C. Effects of HPA-nonlinearity on 4-DPSK-OFDM signal for a digital sound broadcasting system[C]. In Proc. 2nd European Conference on Satellite Communications, Liege Belgium, 1991, vol. 2: 179-184. [9] Saleh A and Salz J. Adaptive linearization of power amplification in digital radio systems [J]. Bell System Technical Journal, 1983, 62(4): 1019-1033. [10] Muhonen K J, Kavehrad M, and Krishnamoorthy R. Look-up table techniques for adaptive digital predistortion: A development and comparison[J].IEEE Trans. on Vehicular Technology.2000, 49(5):1995-2002 [11] Zenobio D, Santella G, and Mazzenga F. Adaptive linearization of power amplifier in orthogonal multicarrier schemes[C], IEEE Int. Wireless Communication System Symposium, NY USA, 1995: 225-230. [12] Wesolowski K and Pochmara J. Efficient algorithm for adjustment of adaptive predistorter in OFDM transmitter[C][J].IEEE VTS-Fall VTC2000, Tokyo Japan.2000, vol.5:2491-2496 [13] Ai B, Yang Z X, Pan C Y, Zhang T T, and Ge J H. Effects of PAPR reduction on HPA predistortion[J].IEEE Trans. on Consumer Electronics.2005, 51(4):1143-1147

施引文献

资源附件(0)

访问统计