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空频发射分集技术在TDS-OFDM中的实现

Implementation of Transmit Diversity Based on TDS-OFDM System
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摘要 为提高在衰落信道中数字电视地面广播(DTTB)系统的传输性能,设计了在时域同步正交频分复用(TDS-OFDM)系统中发射分集技术的应用方案,并在FPGA上实现了TDS-OFDM传输系统双天线发射分集的硬件系统。为了能够快速且实时处理,发射端和接收端硬件实现均采用了流水线结构,并对硬件中的核心模块进行了多次复用以节省硬件资源。仿真结果和硬件测试表明,这种发射分集应用方案能够有效提高系统的接收性能,增加信号传输的可靠性。 In this paper, a design of transmit diversity based on TDS-OFDM system is introduced to improve the performance in fading channels and is implemented on FPGA with double antenna emission. The pipeline structure is used to meet the real-time processing requirement and core modules are al- so reused to save hardware resources. Both computer simulation and hardware test show that the design can effectively improve the receiver performance and increase the reliability of the signal transmission.
作者 竺旭东 王劲涛
机构地区 清华大学电子工程系 清华信息科学与技术国家实验室 微波与数字通信技术国家重点实验室
出处 《电视技术》 北大核心 2012年第21期1-3,7,共4页 Video Engineering
基金 高等学校博士学科点专项科研基金资助课题(20090002120026)
关键词 发射分集 空频编码 时城同步正交频分复用 现场可编程门阵列 数字电视地面广播 transmit diversity space frequency coding TDS-OFDM FPGA DTYB
分类号 TN941.4 [电子电信—信号与信息处理] TN949.197 [电子电信—信号与信息处理]
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参考文献7

  • 1DU Dengbao,WANG Jintao,GONG Ke,et al. A transmit diversity scheme for TDS - OFDM system [ J ]. IEEE Trans. Broadcasting, 2008,54 ( 3 ) : 482--488.
  • 2杨知行,王昭诚.下一代地面数字电视广播系统关键技术[J].电视技术,2011,35(8):22-27. 被引量：17
  • 3LEE K F,WILLIAMS D B. A space-frequency transmitter diversity tech- nique for OFDM systems [ C ]//Proc. IEEE Global Telecommunication Conference, 2000. San Francisco : IEEE Press ,2000 : 1473-1477.
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  • 5GENG Lujing, WANG Jintao, PAN Changyong, et al. Channel estimation for TDS-OFDM transmit diversity systems over doubly selective channels E c ]//Prec. International Conference on Computing, Networking and Communications. 2012. [ S. 1.] : IEEE Press ,2012 : 1098-1102.
  • 6GENG Lujing,WANG Jintao. Low complexity implementation of channel estimation and equalization for TDS-OFDM system[ C ]//Proc. IEEE In- ternational Symposium on Broadband Multimedia Systems and Broadcast- ing, 2011.[S. 1. ] :IEEE Press,2011 :l-d-.
  • 7王劲涛,潘长勇,杨知行.基于TDS-OFDM系统的发射分集技术[J].清华大学学报（自然科学版）,2006,46(1):58-62. 被引量：5

二级参考文献34

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电视技术
2012年 第21期

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