北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2016, Vol. 39 ›› Issue (6): 37-41.doi: 10.13190/j.jbupt.2016.06.007

• 论文 • 上一篇    下一篇

MBER优化用于宽带功放通信系统

楼建明1, 朱仁祥1, 郑悠1, 钟秋波1,2   

  1. 1. 宁波工程学院 电子与信息工程学院, 宁波 315016;
    2. 哈尔滨工业大学 机器人技术与系统国家重点实验室, 哈尔滨 150001
  • 收稿日期:2016-05-19 出版日期:2016-12-28 发布日期:2017-01-13
  • 作者简介:楼建明(1966-),男,副教授,E-mail:ljm842@163.com.
  • 基金资助:
    国家自然科学基金项目(61203360);机器人技术与系统国家重点实验室开放研究项目(SKLRS-2012-MS-06);浙江省高等教育教学改革项目(jg2015190);浙江省自然科学基金项目(LQ14F010001);浙江省教育技术研究规划课题(JB049,JA027);全国教育信息技术研究课题2016年度专项课题(166233365)

MBER Optimization Algorithm for Communications with Wide Band Power Amplifiers

LOU Jian-ming1, ZHU Ren-xiang1, ZHENG You1, ZHONG Qiu-bo1,2   

  1. 1. School of Electronic and Information Engineering, Ningbo University of Technology, Ningbo 315016, China;
    2. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
  • Received:2016-05-19 Online:2016-12-28 Published:2017-01-13

摘要: 针对通信系统中宽带功率放大器引起的非线性失真问题,提出了最小差错概率(MBER)算法,以优化非线性均衡器参数,并采用非线性均衡器与数字预失真器对功率放大器非线性失真进行联合补偿.预失真用于减少非线性失真对带外的干扰,非线性均衡器用于减少带内失真.仿真结果表明,基于MBER算法的非线性均衡器性能优于基于最小均方误差算法的均衡器;联合线性化简化了预失真器的结构,并可获得更优的误码率性能.

关键词: 优化算法, 最小差错概率, 功率放大器, 非线性均衡器

Abstract: A joint compensation by digital pre-distortion and nonlinear equalizers was proposed for nonlinear distortion of wide band power amplifiers in communications. The nonlinear equalizers are based on minimum bit error rate (MBER) algorithm. Out-band interference caused by nonlinear distortion is suppressed by digital pre-distorters, and in-band distortion is reduced by nonlinear equalizers. Simulations show that the performance of nonlinear equalizers based on MBER is superior to that based on minimum mean square error algorithm. Through joint compensation of pre-distortion and equalization, the digital distorters can be simplified and the performance of bit error rate can be improved.

Key words: optimization algorithm, minimum bit error rate, power amplifiers, nonlinear equalizers

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