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数字预失真功放EVM特性分析与实验验证
  • ISSN号：1000-3819
  • 期刊名称：《固体电子学研究与进展》
  • 时间：0
  • 分类：TN722.75[电子电信—电路与系统]
  • 作者机构：[1]东南大学毫米波国家重点试验室,南京 210096
  • 相关基金：基金项目：国家863项目（2009AA011801）;网家自然科学慕金委创新群体旗金（60621002）
作者： 王晶琦[1], 朱晓维[1]
关键词： 功率放大器, 数字预失真, 查找表, 误差向量幅度, 邻道功率比, power amplifier , digital predistortion （DPD） , LUT , EVM , ACPR
中文摘要：

推导了无线通信系统误差向量幅度（EVM）与邻道功率比（ACPR）指标的相互关系，得出了通过功放线性化改善ACPR使得系统EVM减小的结论。随后采用具备结构简单、处理速度快、实时性好等优点的查找表（LUT）方法设计数字预失真器（DPD），数字预失真器用FPGA方式实现。对该数字预失真器进行了仿真分析，验证了理论推导结论，最后给出DPD功率放大器试验测试数据，与仿真结果吻合良好。

英文摘要：

The relationship between EVM and ACPR is derived in this paper. Same as ACPR, EVM of output signal is greatly improved when the power amplifier is linearized by DPD technique. Simulation results dovetail nicely with this conclusion. LUT-based DPD is employed and implemented by FPGA in this paper. Measurement results show that this DPD technique can greatly reduce power amplifier distortion.

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期刊信息
  • 《固体电子学研究与进展》
  • 中国科技核心期刊
  • 主管单位:中国电子科技集团公司
  • 主办单位:南京电子器件研究所
  • 主编：杨乃彬
  • 地址：南京中山东路524号(南京160信箱43分箱)
  • 邮编：210016
  • 邮箱：gtdz@chinajournal.net.cn
  • 电话：025-86858161
  • 国际标准刊号：ISSN：1000-3819
  • 国内统一刊号：ISSN：32-1110/TN
  • 邮发代号:
  • 获奖情况:
  • 中国期刊方阵双效期刊,江苏省第六届优秀期刊,工信部09-10年期刊编辑质量优秀奖
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,中国中国科技核心期刊,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:2461