计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

基于异构导频60 GHz系统的压缩感知信道估计

陈坤a,b,赵迎新a,b,吴虹a,b,王晓敏a,b,刘勇a,b,王琦琦a,b,唐然a,b,慈骋a,b   

  1. (南开大学 a.电子信息与光学工程学院; b.天津市信息光子材料与技术重点实验室,天津 300071)
  • 收稿日期:2015-03-17 出版日期:2016-04-15 发布日期:2016-04-15
  • 作者简介:陈坤(1987-),男,博士研究生,主研方向为无线通信;赵迎新,讲师、博士;吴虹,教授、博士;王晓敏、刘勇,硕士研究生;王琦琦、唐然、慈骋,博士研究生。
  • 基金项目:
    国家自然科学基金资助项目(60872026);高等学校博士学科点专项科研基金资助项目(20110031110028);天津市应用基础与前沿技术研究计划基金资助项目(13JCZDJC26000,13JCQNJC01000)。

Compressed Sensing Channel Estimation Based on Heterogeneous Pilot 60 GHz System

CHEN Kuna,b,ZHAO Yingxina,b,WU Honga,b,WANG Xiaomina,b,LIU Yonga,b,WANG Qiqia,b,TANG Rana,b,CI Chenga,b   

  1. (a.College of Electronic Information and Optical Engineering; b.Tianjin Key Laboratory of Photonics Materials and Technology for Information Science,Nankai University,Tianjin 300071,China)
  • Received:2015-03-17 Online:2016-04-15 Published:2016-04-15

摘要: 研究压缩感知理论及已有的压缩感知信道估计算法,结合60 GHz系统导频结构的特点,提出一种非同构导频的压缩感知信道估计算法。该算法将导频序列乘以PN序列,得到导频序列矩阵并插入正交频分复用符号中,抽取3个符号进行正交匹配追踪压缩感知信道估计。仿真结果表明,该算法的估计精度、系统误码率与传统的格雷互补序列估计法相当,而使用的采样点只有传统信道估计算法的1/42,提高了系统的频带利用率。

关键词: 60 GHz无线通信, 压缩感知, 导频, 信道估计, 信道均衡

Abstract: The compressed sensing theory and its channel estimation algorithm are researched in this paper.Combined with the characteristics of 60 GHz system pilot structure,the heterogeneous pilot compressed sensing channel estimation algorithm is proposed in this paper.In this algorithm,the pilot sequence is multiplied by PN sequence,and the obtained pilot sequence matrix is inserted in the Orthogonal Frequency Division Multiplexing(OFDM) symbols,then the channel can be estimated by three symbols with Orthogonal Matching Pursuit(OMP) compressed sensing theory.Simulation results show that the channel estimation estimated accuracy and the system error rate of this algorithm are as the same as the traditional Golay sequence channel estimation algorithm.The sampling points number of the proposed algorithm is only 1/42 of the traditional channel estimation algorithm,which greatly improves the system bandwidth utilization.

Key words: 60 GHz wireless communication, compressed sensing, pilot, channel estimation, channel equalization

中图分类号: